U.S. patent application number 16/864473 was filed with the patent office on 2020-08-13 for sprayable, aqueous alcoholic microbicidal compositions comprising zinc ions.
The applicant listed for this patent is Reckitt Benckiser LLC. Invention is credited to Frank APOLLO, John DIEMER, Mohammad Khalid IJAZ, Yun-Peng ZHU.
Application Number | 20200253201 16/864473 |
Document ID | 20200253201 / US20200253201 |
Family ID | 1000004810836 |
Filed Date | 2020-08-13 |
Patent Application | download [pdf] |
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United States Patent
Application |
20200253201 |
Kind Code |
A1 |
APOLLO; Frank ; et
al. |
August 13, 2020 |
Sprayable, Aqueous Alcoholic Microbicidal Compositions Comprising
Zinc Ions
Abstract
Disclosed are pressurized surface treatment compositions which
impart a microbicidal benefit to treated surfaces which
compositions comprise (or in certain preferred embodiments may
consist essentially of, or may consist of): a zinc ion source
material which releases zinc ions into the treatment composition,
preferably a source of Zn.sup.++ ions, at least lower alkyl
aliphatic monohydric alcohol which independently of other
constituents present exhibits a microbicidal effect, a propellant;
and, water. The compositions may further optionally include one or
more further optional constituents such as a detersive surfactant
and/or minor amounts of one or more constituents which impart one
or more advantageous technical or aesthetic benefits to the
compositions, including one or more detersive surfactants wherein
the compositions have pH of at least 5. The compositions exhibit a
microbicidal or germicidal or antimicrobial effect on treated
inanimate surfaces and are characterized in exhibiting a
microbicidal benefit when tested against one or more challenge
microorganisms, preferably against poliovirus type 1 (Sabin)
["PV1"], according to one or more of the following standardized
test protocols: ASTM E1052 Standard Test Method for Efficacy of
Antimicrobial Agents against Viruses in Suspension, or ASTM E1053
Standard Test Method to Assess Virucidal Activity of Chemicals
Intended for Disinfection of Inanimate, Nonporous Environmental
Surfaces, or European Standard Surface Test, EN13697, or AOAC
Germicidal Spray Products as Disinfectant Test Method, AOAC Index,
17.sup.th Ed. (2000).
Inventors: |
APOLLO; Frank; (Montvale,
NJ) ; DIEMER; John; (Montvale, NJ) ; IJAZ;
Mohammad Khalid; (Montvale, NJ) ; ZHU; Yun-Peng;
(Fairlawn, NJ) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Reckitt Benckiser LLC |
Parsippany |
NJ |
US |
|
|
Family ID: |
1000004810836 |
Appl. No.: |
16/864473 |
Filed: |
May 1, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
16014762 |
Jun 21, 2018 |
10660331 |
|
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16864473 |
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14410156 |
Dec 22, 2014 |
10238105 |
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PCT/GB2013/051725 |
Jun 28, 2013 |
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16014762 |
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61731954 |
Nov 30, 2012 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A01N 25/00 20130101;
A01N 59/16 20130101; A01N 31/02 20130101 |
International
Class: |
A01N 31/02 20060101
A01N031/02; A01N 59/16 20060101 A01N059/16; A01N 25/00 20060101
A01N025/00 |
Foreign Application Data
Date |
Code |
Application Number |
Jul 2, 2012 |
GB |
1211702.4 |
Claims
1. (canceled)
2. (canceled)
3. (canceled)
4. (canceled)
5. (canceled)
6. (canceled)
7. (canceled)
8. (canceled)
9. (canceled)
10. (canceled)
11. (canceled)
12. A method of producing an inanimate surface treatment
composition which imparts a microbicidal benefit to treated
surfaces, the method comprising: supplying room temperature water
to a vessel equipped with a stirrer; adding a zinc ion source
material to the water and stirring until dissolved to produce a
zinc ion solution; adjusting the pH of the zinc solution to a pH
ranging between about 8 and about 11 with a pH adjusting
constituent and stirring until homogeneous to produce a pH
solution; adding a lower alkyl aliphatic monohydric alcohol to the
pH solution in an amount not in excess of 40% wt of the inanimate
surface treatment composition; adding any auxiliary constituents
and, if necessary, additional pH adjusting constituent to maintain
the pH between about 8 and about 11; adding water to bring a final
weight of the inanimate surface treatment composition to 100% wt
and stirring until homogeneous to produce the inanimate surface
treatment composition.
13. The method of claim 12, wherein the zinc ion source is zinc
acetate.
14. The method of claim 12, wherein the zinc ion source is zinc
sulfate.
15. The method of claim 12, wherein the lower alkyl aliphatic
monohydric alcohol is ethanol.
16. The method of claim 12, wherein the lower alkyl aliphatic
monohydric alcohol is present in an amount in excess of 0% wt and
up to but excluding 20% wt of the inanimate surface treatment
composition.
17. The method of claim 16, wherein the lower alkyl aliphatic
monohydric alcohol is ethanol.
18. The method of claim 12, wherein the pH adjusting constituent is
an alkanolamine.
19. The method of claim 18, wherein the alkanolamine is
ethanolamine.
20. The method of claim 12, wherein the auxiliary constituent
comprises a detersive surfactant, other than a quaternary ammonium
surfactant compound
21. The method of claim 20, wherein the detersive surfactant is a
nonionic surfactant.
22. The method of claim 21, wherein the nonionic surfactant is an
alcohol ethoxylate.
23. The method of claim 12, wherein a quaternary ammonium
surfactant compound is not present in the inanimate surface
treatment composition.
24. The method of claim 12, further comprising adding a quaternary
ammonium surfactant compound to the zinc ion solution to produce a
zinc ion/quat solution and adding the pH adjusting constituent to
the zinc ion/quat solution.
25. The method of claim 24, wherein the quaternary ammonium
surfactant compound is an alkyl dimethyl benzyl ammonium
chloride.
26. The method of claim 24, wherein the quaternary ammonium
surfactant compound is an alkyl dimethyl benzyl ammonium
saccharinate.
27. The method of claim 12, further adding 80-99.5 parts by weight
of the inanimate surface treatment composition and 0.5-20 parts by
weight of a propellant to an aerosol container.
28. The method of claim 24, further adding 80-99.5 parts by weight
of the inanimate surface treatment composition and 0.5-20 parts by
weight of a propellant to an aerosol container.
Description
[0001] The present invention relates to sprayable, pressurized
aqueous alcoholic compositions which comprise zinc ions which
compositions exhibit a microbicidal benefit when applied to
inanimate surfaces. These sprayable pressurized aqueous alcoholic
compositions provide a surprisingly high degree of microbicidal
activity against various undesirable microorganisms (sometimes
referred to as `pathogens`) including various bacteria,
mycobacteria, viruses, and fungi.
[0002] While ethanol and other monohydric alcohols are known to the
art as having a beneficial microbicidal benefit, at the same time
it is a volatile organic compound ("VOC") and there is a
substantial interest in regulating the use of ethanol (as well as
other volatile organic compounds) in products wherein the ethanol
or other VOC is exposed to the environment. Such regulatory
interests are, however, completely contrary to the technical
benefits provided by ethanol and other monohydric alcohols. Ethanol
in particular is a very effective microbicidal agent, as increased
levels of ethanol in a composition have long been known to exhibit
increased microbicidal benefits against undesirable
microorganisms.
[0003] The technical art has proposed several compositions which
are lauded to provide some degree of antimicrobial efficacy, at the
same time comprising reduced amounts of ethanol and other
monohydric alcohols while still providing an appreciable
microbicidal benefit. However, these compositions are not wholly
successful in providing a microbicidal benefit against a broad
range of undesirable microorganisms, and in particular in providing
effective microbicidal benefit against particularly difficult to
eradicate microorganisms including viruses, and in particular
poliovirus (e.g., poliovirus type 1 (Sabin)). As is recognized in
the art, demonstrated eradication of poliovirus is highly
advantageous as such compositions would not only be effective in
controlling this dangerous microorganism but at the same time such
a high level of efficacy would also be recognized as having a high
degree of microbicidal efficacy against relatively easier to
eradicate microorganisms including but not limited to bacteria,
mycobacteria, other non-enveloped and enveloped virus strains and
in many cases, fungi.
[0004] The prior art discloses various compositions which are cited
to provide a microbicidal effect. For example, in U.S. Pat. No.
5,180,749 are described largely aqueous compositions comprising
about 65-88% wt. water and which include as further essential
constituents both about 10-30% wt. ethanol with about 2-5% wt.
benzyl alcohol. However, the use of water soluble metal salts is
not disclosed nor is the pH of the compositions disclosed. The
compositions were tested against Staphylococcus aureus, Salmonella
choleraesuis, Pseudomonas aeruginosa, rhinovirus type 39, herpes
simplex 1, herpes simplex 2, adenovirus type 2, respiratory
syncytial, influenza A2, influenza B, human rotavirus,
Mycobacterium tuberculosis var. bovis, as well as fungi of types
Aspergillus niger and Trichopython mentgrophytes. In that patent,
when contrasting the data from Table B to the data from Table A,
the necessary inclusion of benzyl alcohol in conjunction with
ethanol in order to achieve increased microbicidal efficacy is
shown. The poor microbicidal efficacy of compositions comprising
30% wt. ethanol and water and where benzyl alcohol is absent is
demonstrated on Table B.
[0005] U.S. Pat. No. 5,728,404 discloses certain virucidal
disinfectant compositions which are described as including one or
more C.sub.1-C.sub.4 aliphatic alcohols, 0.1-1% wt. of a hydrolized
metal ion, and water. Compositions comprising ethyl alcohol and
isopropyl alcohol at ratios of 8:1 to 1:1 are noted to be
particularly effective and preferred. While the document alleges
that the amount of the aliphatic alcohol may be in the range of
40%-90% wt., such is not demonstrated as in the only four examples
provided the amount of the aliphatic alcohols are respectively 80%
wt., 70% wt., 80% wt. and 80% wt. Furthermore, when formed as
described in that patent document, the composition according to
Example 1 exhibited a pH of 5.48, the composition of Example 2
exhibited a pH of 5.63, and the composition of Example 3 exhibited
a pH of 5.63, which indicates that the foregoing compositions
consistently demonstrated an acidic pH.
[0006] The treatment of biofilms by compositions which include
certain heavy metals are known from US 2008/0118573. The treatment
steps require that the biofilms be contacted with the said
compositions for 4 hours or more. The biofilms are defined to be
conglomerates of microbial organisms embedded in highly hydrated
matricies of exopolymers, typically polysaccharides, and other
macromolecules.
[0007] U.S. Pat. Nos. 6,034,043 and 6,017,861 disclose liquid skin
cleaning compositions comprising (1) a so-called mild surfactant
system, of which at least 10% wt. of which, preferably at least 25%
wt. of which, is an anionic surfactant, (2) 0.1-10% wt. of a
polyvalent cation or cations selected from zinc, copper, tin,
aluminum, cobalt, nickel, chromium, titanium, and/or manganese and
mixtures thereof, and (3) 1-99% wt. water wherein the cations
provide antimicrobial activity. The patent suggests that
antimicrobial activity of the liquid skin cleaning compositions was
due to the combination of the mild surfactant system with the
polyvalent cation or cations which in combination, provided an
antimicrobial benefit whereas the polyvalent cation or cations
themselves did not. None of the demonstrated compositions include
lower alkyl monohydric alcohols.
[0008] U.S. Pat. No. 6,344,218 discloses topical sanitizing gel
compositions which include an odor absorber, which may be a water
soluble salt such as a water soluble copper salt or water soluble
zinc salt, from 40-90% wt. of an alcohol as well as an
antimicrobial agent which may be a quaternary ammonium chloride.
The reference states that when zinc salts are used, the pH is
suitable adjusted to less than about 7, preferably less than about
6 and more preferably to less than about 5.
[0009] U.S. Pat. No. 7,871,649 discloses antimicrobially active
gels, creams, ointments, lotions and soaps whose antimicrobial
activity is enhanced by the inclusion of quaternary ammonium
compounds and essential oils and/or one or more individual
constituents thereof. These compositions are for topical
application to the skin or various mucous membranes of the body. In
preferred embodiments the compositions comprise 10-90% w/w alcohol,
15-70% w/w water, 0.05-3% w/w thickeners and/or gelling agents, and
0.1-3% w/w of emollients. The reference discloses that zinc salts
may be present to reduce skin irritation of the gels. No mention of
any antimicrobial efficacy against poliovirus is disclosed.
[0010] US 2004/0213750 discloses aqueous alcoholic compositions
which comprise 40% wt.-70% wt. of a lower alkanol, optionally a
quaternary ammonium cationic compound which itself provides
germicidal properties, water and a pH adjusting agent to provide a
final pH of between 7 and 13. The compositions are shown to be
effective against various microorganisms including gram-positive
and gram-negative types of pathogenic bacteria, as well as
poliovirus type 1 at a 10 minute contact time. The reference makes
no mention of the use of zinc ions in the compositions.
[0011] Further known to the art are the compositions disclosed in
US 2007/0184013 which compositions are cited to be effective
against non-enveloped virus particles. The compositions comprise a
C.sub.1-C.sub.6 alcohol and an efficacy-enhancing amount of one or
more of: cationic oligomers and polymers, proton donors, chaotropic
agents, and mixtures thereof with the proviso that when the
compositions include a proton donor, a cationic oligomer or polymer
is also present. The cationic oligomers and polymers disclosed are
defined to include cationic polyalkylene imines, cationic ethoxy
polyalkylene imines, cationic
poly[N-[3-(dialkylammonio)alkyl]N'[3-(alkyleneoxyalkylene
dialkylammonio)alkyl]urea dichloride], vinyl
caprolactam/VP/dialkylaminoalkyl alkylate copolymers and
polyquaternium copolymers. The example compositions disclosed in
the reference demonstrate compositions having 62% and even greater
amounts of the C.sub.1-C.sub.6 alcohol as being present.
[0012] US 2008/0045491 discloses certain surface sanitizer
compositions which are recited to include 50-90% of an alcohol
component, 10-50% of water, an acid component to maintain the pH of
the composition between 2-5, and 0.05-5% of a multivalent cation
constituent. The multivalent cation constituent may be a one of a
selected list of polymers, a metal ion, or a metal compound. The
compositions may optionally include one or more further
constituents, including oxidative agents, plant derived alkenes or
essential oils, emollients, humectants, lubricants and one or more
antimicrobial compounds, e.g., quaternary ammonium compounds. A
single example of US 2008/0045491 demonstrates that a composition
having 78% wt. ethanol exhibits efficacy against Candida albicans,
Aspergillus niger, Escherichia coli, Pseudomonas aeruginosa,
Staphylococcus aureus and Adenovirus type 5. The further examples
of US 2008/0045491 are not disclosed to have been tested against
any microorganisms.
[0013] US 2008/0138438 discloses certain antimicrobial compositions
having antiviral and antibacterial efficacy which include a
divalent zinc salt, optionally a disinfecting alcohol, optionally
an antimicrobial agent, and optionally an organic acid. The
compositions exhibit a pH of about 5 or less, preferably a pH of
less than 4.5 and especially preferably a pH in the range of about
2.5 to about 4.5.
[0014] US 2010/0151046 discloses certain disinfectant compositions
which comprise ethanol, a zinc containing compound which releases
zinc ions in solution, and a combination of lactic acid with citric
acid.
[0015] US 2010/0233098 discloses methods and compositions for
disinfecting hard surfaces which are aqueous compositions which
comprise 40% wt.-70% wt. of an alcohol constituent selected from
the group consisting of methanol, ethanol, n-propanol, isopropanol,
n-butanol, benzyl alcohol, and mixtures thereof and a pH in the
range of from about 7.0-14.0. The compositions may include further
optional constituents, including ancillary antimicrobial agents,
and surfactants. The use of water soluble metal salts is not
disclosed.
[0016] Notwithstanding these various known art compositions, there
is still an urgent need in the art to produce pressurized,
sprayable treatment compositions, particularly those adapted for
the control or eradication of undesired microorganisms where such
treatment compositions comprise reduced amounts of VOC, and in
particular aliphatic alcohols which provide a microbicidal effect
such as ethanol, yet which compositions are highly effective
against particularly difficult to eradicate undesired
microorganisms, especially poliovirus, particularly where the
sprayable, pressurized treatment compositions are applied to an
inanimate surface.
[0017] In a broad aspect, the compositions of the present invention
are directed to sprayable, pressurized inanimate surface treatment
compositions which impart a microbicidal benefit to treated
surfaces which compositions comprise (or in certain preferred
embodiments may consist essentially of, or may consist of) as
constituents: a zinc ion source material which releases zinc ions
into the treatment composition, at least one alcohol which
independently of other constituents present exhibits a microbicidal
effect, and a liquid carrier which may be water or a mixture of
water and an alcohol, and a propellant, and wherein the
compositions are at a pH such that the sprayable, pressurized
inanimate surface treatment compositions exhibit a microbicidal
effect on treated surfaces. The sprayable, pressurized inanimate
surface treatment compositions may further optionally comprise one
or more additional constituents which impart one or more
advantageous technical or aesthetic benefits to the compositions,
e.g., one or more cationic quaternary ammonium compounds which
provide a microbicidal benefit, one or more detersive surfactants.
Preferably the sprayable, pressurized inanimate surface treatment
compositions are characterized in exhibiting a microbicidal benefit
when tested according to one or more of the following standardized
test protocols: ASTM E1052 Standard Test Method for Efficacy of
Antimicrobial Agents against Viruses in Suspension, or ASTM E1053
Standard Test Method to Assess Virucidal Activity of Chemicals
Intended for Disinfection of Inanimate, Nonporous Environmental
Surfaces, or European Standard Surface Test, EN13697, or AOAC
Germicidal Spray Products as Disinfectant Test Method, AOAC Index,
17.sup.th Ed. (2000) against one or more challenge
microorganisms.
[0018] Within this broad aspect, the present inventors have
surprisingly observed that there may be formed sprayable
pressurized treatment compositions which exhibit a synergistic
improvement in microbiocidal effect when there are added to aqueous
alcoholic liquid compositions at specific pH ranges, especially
preferably at alkaline pH ranges, small but effective amounts of a
material which provides a zinc ion to these compositions and
optionally but in most cases, especially wherein at least one
further surfactant is also present. Such an effect is surprising,
and also particularly technically advantageous, as improved
microbiocidal efficacy has been observed against particularly
difficult to control (or eradicate) microorganisms and in
particular the poliovirus, while at the same time achieving these
effects in aqueous alcoholic liquid compositions having a reduced
VOC content. As is known to the art, non-enveloped viruses
including poliovirus is particularly difficult to control or
eradicate, and demonstrated microbiocidal efficacy against
poliovirus is expected to be indicative of microbicidal efficacy
against other non-enveloped viruses and microorganisms which are
less difficult to control or eradicate.
[0019] In one aspect the present invention provides sprayable,
pressurized inanimate surface treatment compositions which impart a
microbicidal benefit to treated surfaces which compositions
comprise (or in certain preferred embodiments may consist
essentially of, or may consist of) as constituents:
[0020] a zinc ion source material which releases zinc ions into the
treatment composition, preferably a source of Zn.sup.++ ions;
[0021] at least one lower alkyl aliphatic monohydric alcohol;
[0022] propellant;
[0023] water;
[0024] optionally, one or more further constituents which impart
one or more advantageous technical or aesthetic benefits to the
compositions, including one or more detersive surfactants;
[0025] wherein the composition has a pH of at least 5,
[0026] wherein the compositions are characterized in exhibiting a
microbicidal benefit when tested against one or more challenge
microorganisms, especially preferably against Poliovirus type 1
(Sabin) ("PV1") according to one or more of the following
standardized test protocols: ASTM E1052 Standard Test Method for
Efficacy of Antimicrobial Agents against Viruses in Suspension, or
ASTM E1053 Standard Test Method to Assess Virucidal Activity of
Chemicals Intended for Disinfection of Inanimate, Nonporous
Environmental Surfaces, or European Standard Surface Test, EN1369,
or AOAC Germicidal Spray Products as Disinfectant Test Method, AOAC
Index, 17.sup.th Ed. (2000).
[0027] In a second aspect the present invention provides sprayable,
pressurized inanimate surface treatment compositions which impart a
microbicidal benefit to such treated surfaces which compositions
comprise (or in certain preferred embodiments may consist
essentially of, or may consist of) as constituents:
[0028] a zinc ion source material which releases zinc ions into the
treatment composition, preferably a source of Zn.sup.++ ions;
[0029] in excess of 0% wt., and up to but excluding 20% wt. of at
least one lower alkyl aliphatic monohydric alcohol;
[0030] propellant;
[0031] optionally but preferably also at least one quaternary
ammonium surfactant compound which provides a microbicidal
benefit;
[0032] water;
[0033] optionally, one or more further constituents which impart
one or more advantageous technical or aesthetic benefits to the
compositions, including one or more detersive surfactants;
[0034] wherein the composition has a pH of at least 5,
[0035] wherein the compositions are characterized in exhibiting a
microbicidal benefit when tested against one or more challenge
microorganisms, especially preferably against poliovirus type 1
(Sabin) ("PV1") according to one or more of the following
standardized test protocols: ASTM E1052 Standard Test Method for
Efficacy of Antimicrobial Agents against Viruses in Suspension, or
ASTM E1053 Standard Test Method to Assess Virucidal Activity of
Chemicals Intended for Disinfection of Inanimate, Nonporous
Environmental Surfaces, or European Standard Surface Test, EN13697,
or AOAC Germicidal Spray Products as Disinfectant Test Method, AOAC
Index, 17.sup.th Ed. (2000) against one or more challenge
microorganisms, especially preferably against poliovirus type 1
(Sabin) ("PV1").
[0036] In a third aspect the present invention provides sprayable,
pressurized inanimate inanimate surface treatment compositions
which impart a microbicidal benefit to such treated surfaces which
compositions comprise (or in certain preferred embodiments may
consist essentially off, or may consist of) as constituents:
[0037] a zinc ion source material which releases zinc ions into the
treatment composition, preferably a source of Zn.sup.++ ions;
[0038] at least one lower alkyl aliphatic monohydric alcohol;
[0039] at least one further detersive surfactant, other than the
least one quaternary ammonium compound, which provides a
microbicidal benefit, as compared to where such at least one such
further detersive surfactant is absent, which is preferably at
least one nonionic surfactant;
[0040] propellant;
[0041] water;
[0042] optionally, one or more further constituents which impart
one or more advantageous technical or aesthetic benefits to the
compositions, including one or more detersive surfactants;
[0043] wherein the composition has a pH of at least 5,
[0044] wherein the compositions are characterized in exhibiting a
microbicidal benefit against one or more challenge microorganisms,
especially preferably against poliovirus type 1 (Sabin) ("PV1"),
when tested according to one or more of the following standardized
test protocols: ASTM E1052 Standard Test Method for Efficacy of
Antimicrobial Agents against Viruses in Suspension, or ASTM E1053
Standard Test Method to Assess Virucidal Activity of Chemicals
Intended for Disinfection of Inanimate, Nonporous Environmental
Surfaces, or European Standard Surface Test, EN13697, or AOAC
Germicidal Spray Products as Disinfectant Test Method, AOAC Index,
17.sup.th Ed. (2000).
[0045] In a fourth aspect the present invention provides sprayable,
pressurized inanimate surface treatment compositions which impart a
microbicidal benefit to treated surfaces which compositions
comprise (or in certain preferred embodiments may consist
essentially of, or may consist of) as constituents:
[0046] a zinc ion source material which releases zinc ions into the
treatment composition, preferably a source of Zn.sup.++ ions;
[0047] at least 20% wt of at least one lower alkyl aliphatic
monohydric alcohol;
[0048] at least one quaternary ammonium surfactant compound which
provides a microbicidal benefit;
[0049] at least one further detersive surfactant, other than the
least one quaternary ammonium compound, which provides a
microbicidal benefit, as compared to where such at least one such
further detersive surfactant is absent, which is preferably at
least one nonionic surfactant;
[0050] propellant,
[0051] water;
[0052] optionally, one or more further constituents which impart
one or more advantageous technical or aesthetic benefits to the
compositions, including one or more detersive surfactants;
[0053] wherein the composition has a pH of at least 5,
[0054] wherein the surface treatment compositions are characterized
in exhibiting a microbicidal benefit against one or more challenge
microorganisms, especially preferably against poliovirus type 1
(Sabin) ("PV1"), when tested according to one or more of the
following standardized test protocols: ASTM E1052 Standard Test
Method for Efficacy of Antimicrobial Agents against Viruses in
Suspension, or ASTM E1053 Standard Test Method to Assess Virucidal
Activity of Chemicals Intended for Disinfection of Inanimate,
Nonporous Environmental Surfaces, or European Standard Surface
Test, EN13697, or AOAC Germicidal Spray Products as Disinfectant
Test Method, AOAC Index, 17.sup.th Ed. (2000).
[0055] In a fifth aspect the present invention provides liquid,
inanimate surface treatment compositions which impart a
microbicidal benefit to such treated surfaces which compositions
comprise (or in certain preferred embodiments may consist
essentially of, or may consist of) as constituents:
[0056] a zinc source material which releases zinc ions into the
treatment composition, preferably a source of Zn++ ions;
[0057] at least 35% wt. of at least one lower alkyl aliphatic
monohydric alcohol, and wherein [0058] a) when compositions
comprise 35% wt. to <39% wt. of at least one lower alkyl
aliphatic monohydric alcohol, the pH of the compositions are
.gtoreq.10 and <11; [0059] b) when compositions comprise
.gtoreq.39% wt. to .ltoreq.50% wt. of at least one lower alkyl
aliphatic monohydric alcohol, the pH of the compositions are
.gtoreq.9 and <11;
[0060] at least one quaternary ammonium compound which provides a
microbicidal benefit;
[0061] water;
[0062] propellant;
[0063] optionally, one or more further constituents which impart
one or more advantageous technical or aesthetic benefits to the
compositions, including one or more detersive surfactants;
[0064] and,
[0065] wherein the surface treatment compositions are characterized
in exhibiting at least a 3 log 10 result when tested against
poliovirus type 1 (Sabin) ("PV1") tested according to one or more
of the following standardized test protocols: ASTM E1052 Standard
Test Method for Efficacy of Antimicrobial Agents against Viruses in
Suspension, or, ASTM E1053 Standard Test Method to Assess Virucidal
Activity of Chemicals Intended for Disinfection of Inanimate,
Nonporous Environmental Surfaces.
[0066] In the foregoing, preferably at least one detersive
surfactant is also present, preferably a nonionic surfactant, as a
further essential constituent.
[0067] In a further aspect the present invention provides
sprayable, pressurized treatment compositions according to any
foregoing aspects of the invention which compositions exhibit a pH
of at least at least 6, yet more preferably at least 7.
[0068] In a further aspect the present invention provides a
sprayable, pressurized treatment composition according to any of
the foregoing aspects of the invention, which compositions are
further characterized in the composition satisfies at least one of
the following Conditions A, B, C, D, E, F, G, H, I, J, K and L:
TABLE-US-00001 log.sub.10 reduction of % wt. of at poliovirus type
1 least one (Sabin) ("PV1")when lower alkyl tested according to
aliphatic the standardized test Con- pH or pH monohydric protocol:
ASTM dition range alcohol E1052 A <9 .gtoreq.38.6 and .ltoreq.45
-- B .gtoreq.9.0 and <9.5 .gtoreq.34.15 and .ltoreq.45.44 at
least 1.73 C .gtoreq.9.5 and <10 .gtoreq.37.4 and .ltoreq.45.44
at least 5.0 D .gtoreq.10 and <10.5 .gtoreq.35.2 and
.ltoreq.45.44 at least 5.0 E .gtoreq.10.5 and .gtoreq.31.8 and
.ltoreq.45.44 at least 7.0 <11 F .gtoreq.11 .gtoreq.31.8 and
.ltoreq.45.44 -- log.sub.10 reduction of % wt. of at poliovirus
type 1 least one (Sabin) ("PV1")when lower alkyl tested according
to aliphatic the standardized test Con- pH or pH monohydric
protocol: ASTM dition range alcohol E1053 G <9 .gtoreq.38.6 and
.ltoreq.40.9 -- H .gtoreq.9.0 and <9.5 .gtoreq.34.15 and
.ltoreq.45.44 -- I .gtoreq.9.5 and <10 .gtoreq.37.4 and
.ltoreq.45.44 at least 3.73 J .gtoreq.10 and <10.5 .gtoreq.35.2
and .ltoreq.45.44 at least 2.25 K .gtoreq.10.5 and .gtoreq.31.8 and
.ltoreq.45.44 at least 3.17 <11 L .gtoreq.11 .gtoreq.31.8 and
.ltoreq.45.44 at least 4.17
[0069] In a further aspect the present invention provides a
sprayable, pressurized treatment composition according to any of
the foregoing aspects of the invention, which compositions are
further characterized in the composition satisfies at least one of
the following Conditions M, N, O, P, Q, R, S and T.
TABLE-US-00002 log.sub.10 reduction of % wt. of at poliovirus type
1 least one (Sabin) ("PV1") when lower alkyl tested according to
aliphatic the standardized test Con- monohydric pH or pH protocol:
ASTM dition alcohol range E1052 M <37.1 .gtoreq.9.11 and
.ltoreq.11.51 at least 1.73 N .gtoreq.37.1 and <40 .gtoreq.9.17
and .ltoreq.10.44 at least 3.27 O .gtoreq.40 and <43
.gtoreq.8.49 and .ltoreq.11.5 at least 7.0 P .gtoreq.43
.gtoreq.8.74 and .ltoreq.11.03 at least 2.56 log.sub.10 reduction
of % wt. of at poliovirus type 1 least one (Sabin) ("PV1") when
lower alkyl tested according to aliphatic the standardized test
Con- monohydric pH or pH protocol: ASTM dition alcohol range E1053
Q <37.1 .gtoreq.9.11 and .ltoreq.11.51 -- R .gtoreq.37.1 and
<40 .gtoreq.9.17 and .ltoreq.10.44 at least 0.38 S .gtoreq.40
and <43 .gtoreq.8.49 and .ltoreq.11.5 at least 3.05 T .gtoreq.43
.gtoreq.9.0 and .ltoreq.11.03 at least 2.0
[0070] In a still further aspect the present invention provides a
method of controlling the incidence of undesired microorganisms on
an inanimate surface, the method comprising the step of contacting
an inanimate surface which is in need of treatment or upon which
the presence of one or more undesirable microorganisms are
suspected or are known to be present, with an effective amount of a
sprayable, pressurized inanimate surface treatment composition as
described herein to provide a surface treatment benefit thereto, to
provide a microbicidal benefit to the contacted surface.
[0071] In an additional aspect the present invention provides a
vendible product, as well as a method for the manufacture of such a
vendible product which comprises a sprayable, pressurized inanimate
surface treatment composition as described herein.
[0072] These and further aspects of the invention will become more
apparent from a reading of the following specification.
[0073] A first essential constituent of the invention is a zinc ion
source material which provides zinc ions which are compounds,
constituents or materials which are at least partially soluble in
the aqueous alcoholic base of the inventive compositions Preferably
such compounds, constituents or materials release zinc ions (e.g.,
preferably Zn++) within the inventive compositions. Nonlimiting
examples of such include zinc compounds having a counterion
selected from acetate, acetylacetonate, bromide, bromide, citrate,
chloride, formate, gluconate, glycerophosphate, iodide, lactate,
nitrate, salycilate, sulfate, pyrithione and tartrate. By way of
non-limiting example, such include species such as zinc acetate,
zinc butyrate, zinc citrate, zinc chloride, zinc gluconate, zinc
glycolate, zinc glycerate, zinc glycolate, zinc formate, zinc
lactate, zinc monohydrate, zinc picolinate, zinc proprionate, zinc
salycilate, zinc sulfate, zinc tartrate, and zinc undecylenate. The
zinc ion source may be in a hydrated form. The zinc ion source may
comprise one or more said compounds, constituents or materials.
Preferred zinc ion sources include zinc salts of an
organo-carboxylic acid having from about 2 to about 6 carbon atoms,
such as zinc salts of acetates, glycloates, lactates, gluconate and
citrates. Particularly preferred zinc ion sources are disclosed in
one or more of the Examples.
[0074] The zinc ion source materials need not be fully soluble
within the treatment compositions provided by the present invention
and may, for example, be dispersions.
[0075] The zinc ion source material may be present in the treatment
compositions in any effective amount and may provide as little as
about 0.5 ppm (part per million) of the zinc ion to the
composition, but advantageously is present in an amount of at least
about 0.001% wt. to about 2.5% wt, preferably from about 0.01% wt
to about 1% wt., and particularly preferably from about 0.01% wt.
to about 0.5% wt. Alternately, the zinc ion source material may be
present in the treatment compositions in a sufficient amount such
that the zinc ion source material releases zinc ions, and
preferably Zn++ ions, into the treatment composition so to provide
between about 1 ppm to about 10,000 ppm of zinc ions, preferably to
about (in order of increasing preference) 9500, 9000, 8500, 8000,
7500, 7000, 6750, 6500, 6250, 6000, 5750, 5500, 5250, 5000, 4750,
4500, 4250, 4000, 3750, 3500, 3250, 3000, 2750, 2500, 2400, 2300,
2250, 2200, 2100, 2000, 1900, 1800, 1750, 1700, 1650, 1600, 1550,
1500, 1450, 1400, 1350, 1300, 1250, 1200, 1150, 1100, 1050, 1000,
975, 950, 925, 900, 875, 850, 825, 800, 775, 750, 725, 700, 675,
650, 625, 600, 575, 550, 500, 475, 450, 425, 400, 375, 350, 325,
300, 275, 250, 225, 200, 175, 150, 125, 100, 95, 90, 85, 80, 75,
70, 65, 60, 55, 50, 45, 40, 35, 30, 25, 20, 15, 10, 9, 8, 7, 6, 5,
4, 3, 2, 1 ppm, and/or alternately any integer number value within
the above range of 1-10,000 ppm of zinc ions, within the inventive
compositions taught herein.
[0076] Exclusive of counterions of surfactant compounds or
counterions of other materials described herein which might be
present, most preferably the zinc source material is the sole
material present in the composition which releases available metal
ions to the treatment compositions taught herein. Most preferably
the zinc source material is the sole material present in the
composition which releases available metal ions to the treatment
compositions taught herein.
[0077] A further essential constituent of the inventive
compositions is at least one lower alkyl aliphatic monohydric
alcohol. Preferably this at least one lower alkyl aliphatic
monohydric alcohol also exhibits a biocidal effect against
microorganisms independently of the other constituents which may be
present in the compositions. Exemplary and preferred are
C.sub.1-C.sub.6 mononhydric alcohols, especially methanol, ethanol,
n-propanol, isopropanol, and all isomers of butanol. Of these,
C.sub.1-C.sub.4 monohydric alcohols, and especially C.sub.1-C.sub.3
mononhydric alcohols are preferred, especially, ethanol. A single
such alcohol, or mixture of two or more such alcohols, may be
present. In certain embodiments when a plurality of alcohols are
present, ethanol is the predominant alcohol present, and especially
preferably comprises at least 50.1% wt., and especially preferably
and in order of increasing preference, at least 51%, 55%, 60%, 65%,
70%, 75%, 80%, 85%, 90%, 92%, 95%, 97%, 98%, 99%, 99.5% and 100% by
weight of the at least one lower alkyl aliphatic monohydric alcohol
constituent present. The at least one lower alkyl aliphatic
monohydric alcohol constituent may be present in any amount in
excess of 0% wt., but preferably is present in amount of at least
about 0.01% wt., and in order of increasing preference in amounts
of at least about 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%,
4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5%, 8%, 8.5%, 9%, 9.5%, 10%, 10.5%,
11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%,
16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.% by weight of the
composition of which they form a part. Preferably the at least one
lower alkyl aliphatic monohydric alcohol constituent is present in
the pressurized, sprayable treatment composition in an amount of at
least about 20% wt., and in order of increasing preference
comprises at least 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, 25%, 25.5%,
26%, 26.5%, 27%, 27.5% 28%, 28.5%, 29%, 29.5%, 30%, 30.5%, 31%,
31.5%, 32%, 32.5%, 33%, 33.5%, 34%, 34.5%, 35%, 35.5%, 36%, 36.5%,
37%, 37.5%, 38%, 38.5%, 39%, 39.5%, 40%, 40.5%, 41%, 41.5%, 42%,
42.5%, 43%, 43.5%, 44%, 44.5%, 45%, 45.5%, 46%, 46.5%, 47%, 47.5%,
48%, 48.5%, 49%, 49.5%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%,
58%, 59%, 60% 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69% and 70%
by weight. Concurrently and preferably the at least one lower alkyl
aliphatic monohydric alcohol constituent is present in the
pressurized, sprayable treatment composition in an amount of up to
about 70% by weight, and in order of increasing preference
comprises at least about 69%, 68%, 67%, 66%, 65%, 64%, 63%, 62%,
61%, 60%, 59%, 58%, 57%, 56%, 55%, 54%, 53%, 52%, 51%, 50%, 49.5%,
49%, 48.5%, 48%, 47.5%, 47%, 46.5%, 46%, 45.5%, 45%, 44.5% 44%,
43.5%, 43%, 42.5%, 42%, 41.5%, 41%, 40.5%, 40%, 39.5%, 39%, 38.5%,
385, 37.5%, 37%, 36.5%, 36%, 35.5%, 35%, 34.5%, 34%, 33.5%, 33%,
32.5%, 32%, 31.5%, 31%, 30.5%, 30%, 29.5%, 29%, 28.5%, 28%, 27.5%,
27%, 26.5%, 26%, 25.5%, 25%, 24.5%, 24%, 23.5%, 23%, 22.5%, 22%,
21.5%, 21%, 20% by weight of the pressurized, sprayable treatment
composition of which it forms a part, although lesser amounts of at
least about 19.5%, 19%, 18.5%, 18%, 17.5%, 17%, 16.5%, 16%, 15.5%,
15%, 14.5%, 14%, 13.5%, 13%, 12.5%, 12%, 11.5%, 11%, 10.5%, 10%,
9.5%, 9%, 8.5%, 8%, 7.5%, 7%, 6.5%, 6%, 5.5%, 5%, 4.5%, 4%, 3.5%,
3%, 2.5%, 2%, 1.5%, 1%, 0.5%, and even as little a about 0.1% wt.
or about 0.01% wt.
[0078] In certain preferred embodiments the compositions preferably
comprise from 20% wt. to 40% wt. of at least one lower alkyl
aliphatic monohydric alcohol, and preferably in an amount up to but
excluding 40% wt., and especially preferably where ethanol was the
predominant or sole alkyl aliphatic monohydric alcohol present in
the lower alkyl aliphatic monohydric alcohol constituent.
[0079] In certain preferred embodiments the compositions preferably
comprise from about 40% wt. to about 50% wt., of at least one lower
alkyl aliphatic monohydric alcohol, and especially preferably where
ethanol was the predominant or sole alkyl aliphatic monohydric
alcohol present in the lower alkyl aliphatic monohydric alcohol
constituent.
[0080] In certain preferred embodiments the compositions preferably
comprise from about 0.01% wt. to up to, but excluding 20% wt., of
at least one lower alkyl aliphatic monohydric alcohol, and
especially preferably where ethanol was the predominant or sole
alkyl aliphatic monohydric alcohol present in the lower alkyl
aliphatic monohydric alcohol constituent.
[0081] Advantageously the lower alkyl aliphatic monohydric alcohol
constituent exhibits a microbicidal effect against one or more
pathogens even in the absence of the further constituents of the
pressurized, sprayable treatment compositions taught herein. For
this reason, C.sub.1-C.sub.3 monohydric aliphatic alcohols, e.g.,
methanol, ethanol and the various isomers of propanol are
particularly preferred whether used singly or in mixtures of two or
more selected C.sub.1-C.sub.3 monohydric aliphatic alcohols as the
sole constituents of the lower alkyl aliphatic monohydric alcohol
constituent. In certain embodiments a single C.sub.1-C.sub.3
monohydric aliphatic alcohol is present as the second essential
constituent. In certain further preferred embodiments, ethanol is
the sole constituent of the lower alkyl aliphatic monohydric
alcohol constituent.
[0082] A next essential constituent is a propellant constituent.
The propellant may be a material or composition which is
conventionally used in the art for such purposes. Propellants which
may be used include, for example, a hydrocarbon, of from 1 to 10
carbon atoms, such as n-propane, n-butane, isobutane, n-pentane,
isopentane, and mixtures thereof; dimethyl ether and blends thereof
as well as individual or mixtures of chloro-, chlorofluoro- and/or
fluorohydrocarbons- and/or hydrochlorofluorocarbons (HCFCs). Useful
commercially available compositions include A-70 (aerosol
compositions with a vapor pressure of 70 prig available from
companies such as Diversified and Aeropress) and Dymel.RTM. 152a
(1,1-difluoroethane from DuPont). Compressed gases such as carbon
dioxide, compressed air, nitrogen, and possibly dense or
supercritical fluids may also be used, and in view of environmental
benefits may be preferred for use in many applications wherein the
use of hydrocarbon based, and particularly wherein the use of
chloro-, chlorofluoro- and/or fluorohydrocarbons- and/or
hydrochlorofluorocarbons (HCFCs) are desirably avoided. Individual
materials or blends of materials may be used as the propellant
constituent. Advantageously the propellant will generally be
present in an amount of from about 1% to about 50% of the total
formulation as contained within the aerosol canister, with
preferred amounts being from about 1% to about 25%, more preferably
from about 1% to about 15%.
[0083] Alternately the propellant constituent may provide an
additional 1% wt. to about 20% wt., preferably about an additional
1% wt. to about 12% wt. in addition to the balance of the remaining
constituents present in the sprayable, pressurized, liquid,
inanimate surface treatment compositions which had been or are
formulated to provide a "100% wt." composition, to which the
propellant constituent is subsequently added. Such a manner of
calculating the weight percentages of the non-propellant
constituents in a sprayable, pressurized, liquid, inanimate surface
treatment composition is convenient as it is expected and
understood that after being dispensed from an aerosol canister, the
propellant is rapidly flashed off into the atmosphere and is not
believed to nor has been observed to provide any microbicidal
benefit or to enhance any microbicidal benefit or effect of the
remaining constituents present in a composition.
[0084] Water is a fourth essential constituent of the invention.
The water may be tap water, but is preferably distilled and is most
preferably deionized water. If the water is tap water, it is
preferably substantially free of any undesirable impurities such as
organics or inorganics, especially mineral salts which are present
in hard water and which may undesirably interfere with the
operation of the constituents present in the compositions according
to the invention. Preferably water comprises at least about 10% wt.
and more preferably in order of increasing preference at least
about 105, 11%, 12%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%,
22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%. 34%,
35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%,
48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%,
61%, 62%, 63%, 64%, 65%. 66%, 67%, 68%, 69%, 70%, 71%, 72%, 73%,
74%, and 75% by weight of water. Concurrently, the compositions of
the invention preferably comprise not more than about 75% wt.,
water, and in order of increasing preference comprise not more than
about: 74%, 73%, 72%, 71%, 70%, 695, 68%, 67%, 66%, 65%. 64%, 63%,
62%, 61%, 60%, 59%, 58%, 57%, 56%. 55%, 54%. 53%, 52%, 51%. 50%,
49%, 48%, 47%. 46%, 45%, 44%, 43%, 42%, 41%, 40%, 39%, 38%. 37%,
36%, 35%, 34%, 33%, 32%, 31%, 30%, 29%, 28%, 27%, 26%, 25%, 24%,
23%, 22%. 21% 20%, 19%, 185, 17%, 16%, 15%, 14%, 13%, 12%, 11%, 10%
by weight of water. In preferred embodiments the total amount of
water and the at least one lower alkyl aliphatic monohydric
alcohol(s) present comprise at least 80% wt., yet more preferably
and in order of increasing preference comprise at least 81%. 82%,
83%. 84%, 85%, 86%, 87%, 88%, 89%, 90%, 91%. 92%, 93%, 94%, 95%,
96%, 97%, 98%, and 99% by weight of the compositions of which they
form a part.
[0085] The present inventors have found that these four essential
constituents, when at a pH of 5 or greater, preferably 6 or
greater, form a highly effective system which exhibits a high
degree of microbicidal efficacy even in the absence of further
constituents. Advantageously however this system may be
supplemented by one or more further constituents.
[0086] While not wishing to be bound by the following, the present
inventors have surprisingly found that by careful selection of: (1)
the nature and amounts of the zinc ion source material which
releases zinc ions into the treatment composition, and especially
preferably wherein the zinc ion source material is a source of
Zn.sup.++ ions, (2) the at least one aliphatic monohydric alcohol
which itself exhibits an independent microbicidal effect, (3)
water, (4) propellant, and (5) the pH level of the sprayable,
pressurized surface treatment composition, the resultant
compositions provide unexpectedly excellent microbicidal efficacy
against a range of undesirable microorganisms including certain
viruses, bacteria and certain fungi, which has heretofore not been
expected from compositions which include the reduced amounts of the
alcohol constituent provided in the inventive compositions. The
resultant compositions provide unexpectedly excellent microbicidal
efficacy against a range of undesirable microorganisms including
certain viruses, bacteria and certain fungi, which has heretofore
not been expected from compositions which include the reduced
amounts of the alcohol constituent provided in the inventive
compositions. Such an effect has been observed even when a very
limited amount of the zinc ion source material is present, and
wherein the amount of the one lower alkyl aliphatic monohydric
alcohol is also present in reduced amounts, e.g, in amount of to
about 50% wt., or even lesser amounts. Reference is made to the
various Examples provided in this patent specification which
demonstrates this effect, particularly as against comparative
formulations which omit one or more of the essential constituents.
Although the literature describes the biochemical mechanisms of the
separate microbicidal actives when these microbicidal actives are
used singly, surface treatment compositions as now disclosed by the
inventors are believed to be unknown, particularly wherein such
surface treatment compositions exhibit what is believed to be a
synergistic benefit.
[0087] In a further aspect of the invention there is provided a
microbicidal control system of constituents which are in and of
themselves effective in providing effective control of poliovirus
independently of further and optional constituents. This
microbicidal control system of constituents comprises (or consists
essentially of, or consists of): water, propellant, one or more one
or more C.sub.1-C.sub.4 aliphatic alcohols which independently of
other constituents present exhibits a microbicidal effect, and
especially preferably wherein ethanol is the predominant or sole
C.sub.1-C.sub.4 aliphatic alcohols present, a zinc ion source
material which is preferably a source of Zn.sup.++ ions, optionally
at least one cationic quaternary ammonium compound which provides a
microbicidal benefit, optionally at least one further detersive
surfactant other than the said cationic quaternary ammonium
compound, which optional further detersive surfactant provides an
improvement to the treatment composition in the control of
poliovirus, as compared to where such at least one such further
detersive surfactant is absent, which at least one further
detersive surfactant is preferably at least one nonionic surfactant
and further, and where necessary, a buffer or pH adjusting agent to
impart an alkaline pH, preferably an alkaline pH of 7.5 or greater.
In preferred embodiments, the microbial control system further
includes the least one further detersive surfactant, other than a
quaternary ammonium surfactant compound which provides a
microbicidal benefit, which further detersive surfactant is
preferably at least one nonionic surfactant. Preferably the
microbicidal control system is characterized in exhibiting a
microbicidal benefit when tested, especially preferably against
poliovirus type 1 (Sabin) ("PV1"), against one or more challenge
microorganisms according to one or more of the following
standardized test protocols: ASTM E1052 Standard Test Method for
Efficacy of Antimicrobial Agents against Viruses in Suspension, or
ASTM E1053 Standard Test Method to Assess Virucidal Activity of
Chemicals Intended for Disinfection of Inanimate, Nonporous
Environmental Surfaces, or European Standard Surface Test, EN1369,
or AOAC Germicidal Spray Products as Disinfectant Test Method, AOAC
Index, 17.sup.th Ed. (2000).
[0088] In certain preferred embodiments the microbicidal control
system of constituents necessarily includes one or both of the at
least one cationic quaternary ammonium compound which provides a
microbicidal benefit, and/or at least one further detersive
surfactant.
[0089] In a further aspect, an additional essential constituent of
the foregoing antimicrobial control system is at least one further
detersive surfactant, other than a cationic quaternary ammonium
compound which provides a microbicidal benefit, which further
detersive surfactant provides an improvement to the control of
poliovirus b the treatment composition, as compared to where such
at least one such further detersive surfactant is absent, which at
least one further detersive surfactant is preferably at least one
nonionic surfactant.
[0090] In a further aspect of the invention there is provided a
second microbicidal control system of constituents which are in and
of themselves effective in providing effective control of Polio
virus independently of further and optional constituents. This
further microbiocidal control system of constituents comprises (or
consists essentially of, or consists of): water, propellant, a zinc
ion source, preferably which releases Zn.sup.++ ions, one or more
one or more C.sub.1-C.sub.4 aliphatic alcohols which independently
of other constituents present exhibits a microbicidal effect and
especially preferably wherein ethanol is the predominant or sole
C.sub.1-C.sub.4 aliphatic alcohols present, at least one quaternary
ammonium compound which provides a microbicidal benefit, and where
necessary a buffer or pH adjusting agent to impart an alkaline pH,
and preferably an alkaline pH of 7.5 or greater. Optionally but
preferably the surfactant constituent is one or both of a nonionic
surfactant and/or a cationic surfactant which itself provides a
further microbiocidal benefit. This second microbicidal control
system of constituents may thereafter optionally include further
constituents which may or may not provide a further microbiocidal
benefit. Preferably this second microbicidal control system of
constituents includes as a further essential at least one further
detersive surfactant, other than a cationic quaternary ammonium
compound which provides a microbicidal benefit, which further
detersive surfactant provides an improvement to the control of
poliovirus by the treatment composition, as compared to where such
at least one such further detersive surfactant is absent, which at
least one further detersive surfactant is preferably at least one
nonionic surfactant.
[0091] Preferably this second microbicidal control system is
characterized in exhibiting a microbicidal benefit, especially
preferably against poliovirus type 1 (Sabin) ("PV1"), when tested
against one or more challenge microorganisms according to one or
more of the following standardized test protocols: ASTM E1052
Standard Test Method for Efficacy of Antimicrobial Agents against
Viruses in Suspension, or ASTM E1053 Standard Test Method to Assess
Virucidal Activity of Chemicals Intended for Disinfection of
Inanimate, Nonporous Environmental Surfaces, or European Standard
Surface Test, EN13697, or AOAC Germicidal Spray Products as
Disinfectant Test Method, AOAC Index, 17.sup.th Ed. (2000).
[0092] Any of the foregoing microbicidal control systems of
constituents may be included in sprayable, pressurized treatment
composition which include further additional constituents and thus
form a part thereof. Alternately, any of the foregoing microbicidal
control systems of constituents may of themselves be representative
of an effective sprayable, pressurized treatment composition. Thus,
in this specification any disclosure or discussions relevant to or
sprayable, pressurized liquid treatment compositions may be
considered similarly applicable and relevant to the microbial
control systems disclosed herein.
[0093] The sprayable, pressurized surface treatment compositions
may further optionally comprise one or more additional constituents
which impart one or more advantageous technical or aesthetic
benefits to the compositions.
[0094] Optionally but in many cases, the sprayable, pressurized
treatment compositions preferably further comprise at least one
quaternary ammonium compound which provides a microbicidal benefit
(germicidal benefit). Thus in certain embodiments one or more such
quaternary ammonium compounds may be essential constituents. For
the purposes of the present invention described herein, such
quaternary ammonium compounds are to be understood as being outside
of the scope of the defined further detersive surfactants as such
materials are primarily provided to impart a microbicidal effect,
and not provide an appreciable detersive benefit. Any cationic
surfactant which satisfies these requirements may be used and are
is considered to be within the scope of the present invention.
Mixtures of two or more cationic surface active agents, viz.,
cationic surfactants may also be used. Cationic surfactants are
well known, and useful cationic surfactants may be one or more of
those described for example in McCutcheon's Functional Materials,
Vol. 2, 1998; Kirk-Othmer, Encyclopedia of Chemical Technology, 4th
Ed., Vol. 23, pp. 481-541 (1997), the contents of which are herein
incorporated by reference. These are also described in the
respective product specifications and literature available from the
suppliers of these cationic surfactants.
[0095] Examples of preferred cationic surfactant compositions
useful in the practice of the instant invention are those which
provide an ancillary microbicidal or germicidal effect to the
compositions, and especially preferred are quaternary ammonium
compounds and salts thereof, which may be characterized by the
general structural formula:
##STR00001##
where at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is a
alkyl, aryl or alkylaryl substituent of from 6 to 26 carbon atoms,
and the entire cation portion of the molecule has a molecular
weight of at least 165. The alkyl substituents may be long-chain
alkyl, long-chain alkoxyaryl, long-chain alkylaryl,
halogen-substituted long-chain alkylaryl, long-chain
alkylphenoxyalkyl, arylalkyl, etc. The remaining substituents on
the nitrogen atoms other than the abovementioned alkyl substituents
are hydrocarbons usually containing no more than 12 carbon atoms.
The substituents R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be
straight-chained or may be branched, but are preferably
straight-chained, and may include one or more amide, ether or ester
linkages. The counterion X may be any salt-forming anion which
permits for the solubility of the quaternary ammonium complex
within the treatment composition.
[0096] Exemplary quaternary ammonium salts within the above
description include the alkyl ammonium halides such as cetyl
trimethyl ammonium bromide, alkyl aryl ammonium halides such as
octadecyl dimethyl benzyl ammonium bromide, N-alkyl pyridinium
halides such as N-cetyl pyridinium bromide, and the like. Other
suitable types of quaternary ammonium salts include those in which
the molecule contains either amide, ether or ester linkages such as
octyl phenoxy ethoxy ethyl dimethyl benzyl ammonium chloride,
N-(laurylcocoaminoformylmethyl)-pyridinium chloride, and the like.
Other very effective types of quaternary ammonium compounds which
are useful as germicides include those in which the hydrophobic
radical is characterized by a substituted aromatic nucleus as in
the case of lauryloxyphenyltrimethyl ammonium chloride,
cetylaminophenyltrimethyl ammonium methosulfate,
dodecylphenyltrimethyl ammonium methosulfate,
dodecylbenzyltrimethyl ammonium chloride, chlorinated
dodecylbenzyltrimethyl ammonium chloride, and the like.
[0097] Preferred quaternary ammonium compounds which act as
germicides and which are useful in the practice of the present
invention include those which have the structural formula:
##STR00002##
wherein R.sub.2 and R.sub.3 are the same or different
C.sub.8-C.sub.12alkyl, or R.sub.2 is C.sub.12-16alkyl.
C.sub.8-18alkylethoxy, C.sub.8-18alkylphenolethoxy and R.sub.3 is
benzyl, and X is a halide, for example chloride, bromide or iodide,
a saccharinate counterion or is a methosulfate anion. The alkyl
groups recited in R.sub.2 and R.sub.3 may be straight-chained or
branched, but are preferably substantially linear.
[0098] Particularly useful quaternary ammonium compounds include
compositions which include a single quaternary compound, as well as
mixtures of two or more different quaternary compounds. Such useful
quaternary compounds are available under the BARDAC.RTM.,
BARQUAT.RTM., HYAMINE.RTM., LONZABAC.RTM., and ONYXIDE.RTM.
trademarks, which are more fully described in, for example,
McCutcheon's Functional Materials (Vol. 2), North American Edition,
1998, as well as the respective product literature from the
suppliers identified below. Such include, for example, BARDAC.RTM.
205M which is described to be a liquid containing alkyl dimethyl
benzyl ammonium chloride, octyl decyl dimethyl ammonium chloride;
didecyl dimethyl ammonium chloride, and dioctyl dimethyl ammonium
chloride (50% active) (also available as 80% active (BARDAC.RTM.
208M)); BARDAC.RTM. 2050 which is described to be a combination of
octyl decyl dimethyl ammonium chloride/didecyl dimethyl ammonium
chloride, and dioctyl dimethyl ammonium chloride (50% active) (also
available as 80% active (BARDAC.RTM. 2080)); BARDAC.RTM. 2250 which
is described to be didecyl dimethyl ammonium chloride (50% active);
BARDAC.RTM. LF (or BARDAC.RTM. LF-80), described as being based on
dioctyl dimethyl ammonium chloride (BARQUAT.RTM. MB-50, MX-50,
OJ-50 (each 50% liquid) and MB-80 or MX-80 (each 80% liquid) are
each described as an alkyl dimethyl benzyl ammonium chloride;
BARDAC.RTM. 4250 and BARQUAT.RTM. 4250Z (each 50% active) or
BARQUAT.RTM. 4280 and BARQUAT 4280Z (each 80% active) are each
described as alkyl dimethyl benzyl ammonium chloride/alkyl dimethyl
ethyl benzyl ammonium chloride. Also, HYAMINE.RTM. 1622, described
as diisobutyl phenoxy ethoxy ethyl dimethyl benzyl ammonium
chloride (50% solution); HYAMINE.RTM. 3500 (50% actives), described
as alkyl dimethyl benzyl ammonium chloride (also available as 80%
active (HYAMINE.RTM. 3500-80)); and HYMAINE.RTM. 2389 described as
being based on methyldodecylbenzyl ammonium chloride and/or
methyldodecylxylene-bis-trimethyl ammonium chloride. (BARDAC.RTM.,
BARQUAT.RTM. and HYAMINE.RTM. are presently commercially available
from Lonza, Inc., Fairlawn, N.J.). BTC.RTM. 50 NF (or BTC.RTM. 65
NE) is described to be alkyl dimethyl benzyl ammonium chloride (50%
active); BTC.RTM. 99 is described as didecyl dimethyl ammonium
chloride (50% active); BTC.RTM. 776 is described to be
myrisalkonium chloride (50% active); BTC.RTM. 818 is described as
being octyl decyl dimethyl ammonium chloride, didecyl dimethyl
ammonium chloride, and dioctyl dimethyl ammonium chloride (50%
active) (available also as 80% active (BTC.RTM. 818-80%)); BTC.RTM.
824 and BTC.RTM. 835 are each described as being of alkyl dimethyl
benzyl ammonium chloride (each 50% active); BTC.RTM. 885 is
described as a combination of BTC.RTM. 835 and BTC.RTM. 818 (50%
active) (available also as 80% active (BTC.RTM. 888)); BTC.COPYRGT.
1010 is described as didecyl dimethyl ammonium chloride (50%
active) (also available as 80% active (BTC.RTM. 1010-80)); BTC.RTM.
2125 (or BTC.RTM. 2125 M) is described as alkyl dimethyl benzyl
ammonium chloride and alkyl dimethyl ethylbenzyl ammonium chloride
(each 50% active) (also available as 80% active (BTC.RTM. 2125 80
or BTC.RTM. 2125 M)); BTC.RTM. 2565 is described as alkyl dimethyl
benzyl ammonium chlorides (50% active) (also available as 80%
active (BTC.RTM. 2568)); BTC.RTM. 8248 (or BTC.RTM. 8358) is
described as alkyl dimethyl benzyl ammonium chloride (80% active)
(also available as 90% active (BTC.RTM. 8249)); ONYXIDE.RTM. 3300
is described as n-alkyl dimethyl benzyl ammonium saccharinate (95%
active). (BTC.RTM. and ONYXIDE.RTM. are presently commercially
available from Stepan Company, Northfield, Ill.) Polymeric
quaternary ammonium salts based on these monomeric structures are
also considered desirable for the present invention. One example is
POLYQUAT.RTM., described as being a 2-butenyldimethyl ammonium
chloride polymer.
[0099] When present, the quaternary ammonium compound(s) may be
present in any effective amount, but generally need not be present
in amounts in excess of about 10% wt. based on the total weight of
the composition of which it forms a part. When present, preferably
the microbicidal quaternary ammonium compounds may be present in
the inventive compositions in amounts of from about 0.001% wt. to
up to about 10% wt., very preferably about 0.01-8% wt., more
preferably in amounts of between about 0.01-2% wt., and most
preferably from about 0.01-1% wt. It is particularly advantageous
that the preferred microbicidal cationic surfactant(s) are present
in amounts of at least about 200 parts per million (ppm),
preferably in amounts of from about 1 ppm to about 10,000 ppm,
preferably from about 50 ppm to about 2000 ppm, more preferably in
amounts of from about 100 ppm to about 1,000 ppm. Particularly
preferred amounts of one or more quaternary ammonium compound(s)
and preferred amounts are identified with reference to the
examples.
[0100] In certain preferred embodiments the treatment compositions
necessarily include at least at least one further detersive
surfactant, (which is preferably a nonionic surfactant) other than
a germicidally effective quaternary ammonium compound, which least
one further detersive surfactant provides a further microbicidal
benefit within the treatment composition of which it forms a part,
as compared to where such at least one such further detersive
surfactant is absent from said composition.
[0101] In certain embodiments the treatment compositions
necessarily include at least one further, detersive surfactant,
although such may be considered an optional constituent according
to other embodiments of the invention.
[0102] In certain preferred embodiments the treatment compositions
necessarily include at least one further detersive surfactant,
(which is preferably a nonionic surfactant) other than a
germicidally effective quaternary ammonium compound, which at least
one further detersive surfactant provides a further microbicidal
benefit within the treatment composition of which it forms a part,
as compared to where such at least one such further detersive
surfactant is absent from said composition.
[0103] In certain embodiments the treatment compositions
necessarily include at least one further, detersive surfactant,
although such may be considered an optional constituent according
to other embodiments of the invention.
[0104] Non-limiting examples of the major surfactant types that can
be used as detersive surfactants of the present invention include
those which are known as anionic, nonionic, amphoteric, and
zwitterionic surfactants as well as further cationic surfactants
which are not primarily present to provide a microbicidal or
germicidal benefit. Such include, e.g.: sulfates and sulfonates of
oils and fatty acids, sulfates and sulfonates, ethoxylated
alkylphenols, sulfates of alcohols, sulfates of ethoxylated
alcohols, sulfates of fatty esters, sulfonates of benzene, cumene,
toluene and xylene, sulfonates of condensed naphthalenes,
sulfonates of dodecyl and tridecylbenzenes, sulfonates of
naphthalene and alkyl naphthalene, sulfonates of petroleum,
sulfosuccinamates, sulfosuccinates and derivatives, soaps,
taurates, thio and mercapto derivatives, tridecyl and dodecyl
benzene sulfonic acids, alkanolamides, alkanolamines, alkylaryl
sulfonates, alkylaryl sulfonic acids, alkylbenzenes, amine
acetates, amine oxides, amines, sulfonated amines and amides,
betaine derivatives, block polymers, carboxylated alcohol or
alkylphenol ethoxylates, carboxylic acids and fatty acids,
ethoxylated alcohols, ethoxylated alkylphenols, ethoxlated amines
and/or amides, ethoxylated fatty acids, ethoxylated fatty esters
and oils, fatty esters, fluorocarbon-based surfactants, glycerol
esters, glycol esters, hetocyclic-type products, imidazolines and
imidazoline derivatives, isethionates, lanolin-based derivatives,
lecithin and lecithin derivatives, lignin and lignin deriviatives,
maleic or succinic anhydrides, methyl esters, monoglycerides and
derivatives, olefin sulfonates, phosphate esters, phosphorous
organic derivatives, polyethylene glycols, polymeric
(polysaccharides, acrylic acid, and acrylamide) surfactants,
propoxylated and ethoxylated fatty acid alcohols or alkyl phenols,
protein-based surfactants, sarcosine derivatives, silicone-based
surfactants, sorbitan derivatives, sucrose and glucose esters and
derivatives, as well as further surfactants known to the art but
not elucidated here.
[0105] Typically however the use of anionic surfactants is to be
avoided as such would be expected to form insoluble complexes
quaternary ammonium compound which provides a germicidal or
microbicidal benefit is concurrently present.
[0106] Additional non-limiting examples of surfactants that can be
used to carry out the present invention include one or more
nonionic surfactants, especially one or more compounds based on the
condensation products of alkylene oxide groups with an organic
hydrophobic compound, such as an aliphatic compound or with an
alkyl aromatic compound. The nonionic synthetic organic detergents
generally are the condensation products of an organic aliphatic or
alkyl aromatic hydrophobic compound and hydrophilic ethylene oxide
groups. Practically any hydrophobic compound having a carboxy,
hydroxy, amido, or amino group with a free hydrogen attached to the
nitrogen can be condensed with ethylene oxide or with the
polyhydration product thereof, polyethylene glycol, to form a water
soluble nonionic detergent. Further, the length of the polyethenoxy
hydrophobic and hydrophilic elements may be varied to adjust these
properties. Illustrative examples of such a nonionic surfactant
include the condensation product of one mole of an alkyl phenol
having an alkyl group containing from 6 to 12 carbon atoms with
from about 5 to 25 moles of an alkylene oxide. Another example of
such a nonionic surfactant is the condensation product of one mole
of an aliphatic alcohol which may be a primary, secondary or
tertiary alcohol having from 6 to 18 carbon atoms with from 1 to
about 10 moles of alkylene oxide. Preferred alkylene oxides are
ethylene oxides or propylene oxides which may be present singly, or
may be both present.
[0107] Non-limiting, illustrative examples of nonionic surfactants
include primary and secondary linear and branched alcohol
ethoxylates, such as those based on C.sub.6-C.sub.18 alcohols which
further include an average of from 2 to 80 moles of ethoxylation
per mol of alcohol. Examples include the Genapol.RTM. series of
linear alcohol ethoxylates from Clariant Corp., Charlotte, N.C. The
26-L series is based on the formula RO(CH.sub.2CH.sub.2O).sub.nH
wherein R is a mixture of linear, even carbon-number hydrocarbon
chains ranging from C.sub.12H.sub.25 to C.sub.16H.sub.33 and n
represents the number of repeating units and is a number of from 1
to about 12, such as 26-L-1, 26-L-1.6, 26-L-2, 26-L-3, 26-L-5,
26-L-45, 26-L-50, 26-L-60, 26-L-60N, 26-L-75, 26-L-80, 26-L-98N,
and the 24-L series, derived from synthetic sources and typically
contain about 55% C.sub.12 and 45% C.sub.14 alcohols, such as
24-L-3, 24-L-45, 24-L-50, 24-L-60, 24-L-60N, 24-L-75, 24-L-92, and
24-L-98N. From product literature, the single number following the
"L" corresponds to the average degree of ethoxylation (numbers
between 1 and 5) and the two digit number following the letter "L"
corresponds to the cloud point in .degree. C. of a 1.0 wt. %
solution in water.
[0108] Further examples of useful nonionic surfactants include
secondary C.sub.12-C.sub.15 alcohol ethoxylates, including those
which have from about 3 to about 10 moles of ethoxylation. Such are
available in the Tergitol.RTM. series of nonionic surfactants (Dow
Chemical, Midland, Mich.), particularly those in the Tergitol.RTM.
"15-S-" series. Further exemplary nonionic surfactants include
linear primary C.sub.11-C.sub.15 alcohol ethoxylates, including
those which have from about 3 to about 10 moles of ethoxylation.
Such are available in the Tomadol.RTM. series of nonionic
surfactants under the following tradenames: Tomadol 1-3 (linear
C.sub.11 alcohol with 3 moles (average) of ethylene oxide); Tomadol
1-5 (linear C.sub.11 alcohol with 5 moles (average) of ethylene
oxide); Tomadol 1-7 (linear C.sub.11 alcohol with 7 moles (average)
of ethylene oxide); Tomadol 1-9 (linear C.sub.11 alcohol with 9
moles (average) of ethylene oxide); Tomadol 23-1 (linear
C.sub.12-13 alcohol with 1 mole (average) of ethylene oxide);
Tomadol 23-3 (linear C.sub.12-13 alcohol with 3 moles (average) of
ethylene oxide); Tomadol 23-5 (linear C.sub.12-13 alcohol with 5
moles (average) of ethylene oxide); Tomadol 23-6.5 (linear
C.sub.12-13 alcohol with 6.6 moles (average) of ethylene oxide);
Tomadol 25-12 (linear C.sub.12-15 alcohol with 11.9 moles (average)
of ethylene oxide); Tomadol 25-3 (linear C.sub.12-15 alcohol with
2.8 moles (average) of ethylene oxide); Tomadol 25-7 (linear
C.sub.12-15 alcohol with 7.3 moles (average) of ethylene oxide);
Tomadol 25-9 (linear C.sub.12-15 alcohol with 8.9 moles (average)
of ethylene oxide); Tomadol 45-13 (linear C.sub.14-15 alcohol with
12.9 moles (average) of ethylene oxide); Tomadol 45-2.25 (linear
C.sub.14-15 alcohol with 2.23 moles (average) of ethylene oxide);
Tomadol 45-7 (linear C.sub.14-15 alcohol with 7 moles (average) of
ethylene oxide); Tomadol 91-2.5 (linear C.sub.9-11 alcohol with 2.7
moles (average) of ethylene oxide); Tomadol 91-6 (linear C.sub.9-11
alcohol with 6 moles (average) of ethylene oxide); Tomadol 91-8
(linear C.sub.9-11 alcohol with 8.3 moles (average) of ethylene
oxide) (Tomah Products, Inc., Milton, Wis.).
[0109] Further examples of useful nonionic surfactants include
C.sub.6-C.sub.15 straight chain alcohols ethoxylated with about 1
to 13 moles of ethylene oxide, particularly those which include
about 3 to about 6 moles of ethylene oxide. Examples of such
nonionic surfactants include Alfonic.RTM. 810-4.5, which is
described as having an average molecular weight of 356, an ethylene
oxide content of about 4.85 moles and an HLB of about 12;
Alfonic.RTM. 810-2, which is described as having an average
molecular weight of 242, an ethylene oxide content of about 2.1
moles and an HLB of about 12; and Alfonic.RTM. 610-3.5, which is
described as having an average molecular weight of 276, an ethylene
oxide content of about 3.1 moles, and an HLB of 10.
[0110] A further class of nonionic surfactants which may find use
in the present inventive compositions include ethoxylated octyl and
nonyl phenols include those having one of the following general
structural formulas:
##STR00003##
in which the C.sub.9H.sub.19 group in the latter formula is a
mixture of branched chained isomers, and x indicates an average
number of ethoxy units in the side chain. Particularly suitable
non-ionic ethoxylated octyl and nonyl phenols include those having
from about 7 to about 13 ethoxy groups. Such compounds are
commercially available under the trade name Triton.RTM. X (Dow
Chemical, Midland, Mich.), as well as under the tradename
Igepal.RTM. (Rhodia, Princeton, N.J.). One exemplary and
particularly preferred nonylphenol ethoxylate is Igepal.RTM.
CO-630.
[0111] Still further examples of suitable nonionic surfactants
include which may be advantageously included in the inventive
compositions are alkoxy block copolymers, and in particular,
compounds based on ethoxy/propoxy block copolymers. Polymeric
alkylene oxide block copolymers include nonionic surfactants in
which the major portion of the molecule is made up of block
polymeric C2-C4 alkylene oxides. Such nonionic surfactants, while
preferably built up from an alkylene oxide chain starting group,
and can have as a starting nucleus almost any active hydrogen
containing group including, without limitation, amides, phenols,
thiols and secondary alcohols.
[0112] One group of such useful nonionic surfactants containing the
characteristic alkylene oxide blocks are those which may be
generally represented by the formula (A):
HO-(EO).sub.x(PO).sub.y(EO).sub.z-H (A)
where EO represents ethylene oxide,
[0113] PO represents propylene oxide,
y equals at least 15, (EO).sub.x+z equals 20 to 50% of the total
weight of said compounds, and, the total molecular weight is
preferably in the range of about 2000 to 15,000.
[0114] Another group of nonionic surfactants for use in the new
inventive compositions can be represented by the formula (B):
R-(EO,PO).sub.a(EO,PO).sub.b-H (B)
wherein R is an alkyl, aryl or aralkyl group, where the R group
contains 1 to 20 carbon atoms, the weight percent of EO is within
the range of 0 to 45% in one of the blocks a, b, and within the
range of 60 to 100% in the other of the blocks a, b, and the total
number of moles of combined EO and PO is in the range of 6 to 125
moles, with 1 to 50 moles in the PO rich block and 5 to 100 moles
in the EO rich block.
[0115] Further nonionic surfactants which in general are
encompassed by formula (B) include butoxy derivatives of propylene
oxide/ethylene oxide block polymers having molecular weights within
the range of about 2000-5000.
[0116] Still further useful nonionic surfactants containing
polymeric butoxy (BO) groups can be represented by formula (C) as
follows:
RO-(BO).sub.n(EO).sub.x-H (C)
wherein R is an alkyl group containing 1 to 20 carbon atoms,
[0117] n is about 5-15 and x is about 5-15.
[0118] Also useful as the nonionic block copolymer surfactants,
which also include polymeric butoxy groups, are those which may be
represented by the following formula (D):
HO-(EO).sub.x(BO).sub.n(EO).sub.y-H (D)
wherein n is about 5-15, preferably about 15,
[0119] x is about 5-15, preferably about 15, and
[0120] y is about 5-15, preferably about 15.
[0121] Still further useful nonionic surfactants include
ethoxylated derivatives of propoxylated ethylene diamine, which may
be represented by the following formula:
##STR00004##
where (EO) represents ethoxy,
[0122] (PO) represents propoxy,
[0123] the amount of (PO).sub.x is such as to provide a molecular
weight prior to ethoxylation of about 300 to 7500, and the amount
of (EO).sub.y is such as to provide about 20% to 90% of the total
weight of said compound.
[0124] Further examples of useful nonionic surfactants are one or
more amine oxides. Exemplary amine oxides include:
[0125] A) Alkyl di (lower alkyl) amine oxides in which the alkyl
group has about 10-20, and preferably 12-16 carbon atoms, and can
be straight or branched chain, saturated or unsaturated. The lower
alkyl groups include between 1 and 7 carbon atoms. Examples include
lauryl dimethyl amine oxide, myristyl dimethyl amine oxide, and
those in which the alkyl group is a mixture of different amine
oxide, dimethyl cocoamine oxide, dimethyl (hydrogenated tallow)
amine oxide, and myristyl/palmityl dimethyl amine oxide;
[0126] B) Alkyl di (hydroxy lower alkyl) amine oxides in which the
alkyl group has about 10-20, and preferably 12-16 carbon atoms, and
can be straight or branched chain, saturated or unsaturated.
Examples are bis(2-hydroxyethyl) cocoamine oxide,
bis(2-hydroxyethyl) tallowamine oxide; and bis(2-hydroxyethyl)
stearylamine oxide;
[0127] C) Alkylamidopropyl di(lower alkyl) amine oxides in which
the alkyl group has about 10-20, and preferably 12-16 carbon atoms,
and can be straight or branched chain, saturated or unsaturated.
Examples are cocoamidopropyl dimethyl amine oxide and
tallowamidopropyl dimethyl amine oxide; and
[0128] D) Alkylmorpholine oxides in which the alkyl group has about
10-20, and preferably 12-16 carbon atoms, and can be straight or
branched chain, saturated or unsaturated.
[0129] Preferably the amine oxide constituent is an alkyl di (lower
alkyl) amine oxide as denoted above and which may be represented by
the following structure:
##STR00005##
[0130] wherein each:
[0131] R.sub.1 is a straight chained C.sub.1-C.sub.4 alkyl group,
preferably both R.sub.1 are methyl groups; and,
[0132] R.sub.2 is a straight chained C.sub.8-C.sub.18 alkyl group,
preferably is C.sub.10-C.sub.14 alkyl group, most preferably is a
C.sub.12 alkyl group.
[0133] Each of the alkyl groups may be linear or branched, but most
preferably are linear. Technical grade mixtures of two or more
amine oxides may be used, wherein amine oxides of varying chains of
the R.sub.2 group are present. Preferably, the amine oxides used in
the present invention include R.sub.2 groups which comprise at
least 50% wt., preferably at least 60% wt. of C.sub.12 alkyl groups
and at least 25% wt. of C.sub.14 alkyl groups, with not more than
15% wt. of C.sub.16, C.sub.18 or higher alkyl groups as the R.sub.2
group.
[0134] Further specific examples of useful nonionic surfactants are
alkanolamide surfactant compounds. Exemplary useful alkanolamides
include one or more monoethanol amides, and diethanol amides of
fatty acids having an acyl moiety which contains from about 8 to
about 18 carbon atoms, and which may be represented in accordance
with the formula:
R.sub.1--CO--N(H).sub.m-1(R.sub.2OH).sub.3-m
where R.sub.1 represents a saturated or unsaturated aliphatic
hydrocarbon radical of from about 7 to 21 carbon atoms, but
preferably from about 11 to 17 carbon atoms; R.sub.2 represents a
--CH.sub.2-- or --CH.sub.2CH.sub.2--, and m is an integer from 1 to
3, but is preferably 1. Preferably, R.sub.1 is a saturated or
unsaturated aliphatic hydrocarbon radical comprising from about 11
to 17 carbon atoms, and m is 1. Specific examples of such compounds
include mono-ethanol amine coconut fatty acid amide and diethanol
amine dodecyl fatty acid amide. An exemplary useful and
particularly preferred fatty acid amides include cocomonoethanol
amide or cocodiethanolamide, which are presently commercially
available under the Monamid.RTM. tradename. Further exemplary
useful alkanolamides which provide such functions include inter
alia: cocamide MEA, cocamide DEA, soyamide DEA, lauramide DEA,
oleamide MIPA, stearamide MEA, myristamide MEA, lauramide MEA,
capramide DEA, ricinoleamide DEA, myristamide DEA, stearamide DEA,
oleylamide DEA, tallowamide DEA, lauramide MIPA, tallowamide MEA,
isostearamide DEA, isostearamide MEA, and mixtures thereof. Further
useful alkanolamide surfactant compounds include alkanolamides,
particularly fatty monoalkanolamides and fatty dialkanolamides,
including one or more of those marketed under the Ninol.RTM.
tradename. Further exemplary alkanolamide surfactant compounds
include monoethanol amides and diethanol amides include those
marketed under the trade names Alakamide.RTM. and Cyclomide.RTM. by
Rhone-Poulenc Co., (Cranbury, N.J.) e.g., Cyclomide.RTM. CDD-518
described to be a nonionic surfactant based on coconut
diethanolamide; Cyclomide.RTM. C212 described to be a nonionic
surfactant based on coconut monoethanolamide; Cyclomide.RTM.
DC212/SE described to be a nonionic surfactant based on 1:1 fatty
acid diethanolamide; Cyclomide.RTM. DIN 100 described to be a
nonionic surfactant based on lauric/linoleic diethanolamide;
Cyclomide.RTM. DIN-295/S described to be a nonionic surfactant
based on 1:1 linoleic diethanolamide; Cyclomide.RTM. DL203
described to be a nonionic surfactant based on 2:1 lauric
diethanolamide.
[0135] Further specific examples of useful nonionic surfactants
include alkyl polyglycosides. The alkyl polyglycosides which can be
used as nonionic surfactants in the composition are generally
represented by the formula:
R.sub.1O(R.sub.2O).sub.b(Z).sub.a
wherein R.sub.1 is a monovalent organic radical having from about 6
to about 30 carbon atoms; R.sub.2 is a divalent alkylene radical
having from 2 to 4 carbon atoms; Z is a saccharide residue having 5
or 6 carbon atoms; b is a number having a value from 0 to about 12;
a is a number having a value from 1 to about 6. Preferred alkyl
polyglycosides have the formula I wherein Z is a glucose residue
and b is zero. Such alkyl polyglycosides are commercially
available, for example, as APG.RTM., GLUCOPON.RTM., or
PLANTAREN.RTM. surfactants from Cogis Corp. Specific examples of
such surfactants include but are not limited to: APG.RTM. 225,
described to be an alkyl polyglycoside in which the alkyl group
contains 8 to 10 carbon atoms and having an average degree of
polymerization of 1.7; GLUCOPON.RTM. 425, described to be an alkyl
polyglycoside in which the alkyl group contains 8 to 16 carbon
atoms and having an average degree of polymerization of 1.48;
GLUCOPON.RTM. 625, described to be an alkyl polyglycoside in which
the alkyl group contains 12 to 16 carbon atoms and having an
average degree of polymerization of 1.6; APG.RTM. 325, described to
be an alkyl polyglycoside in which the alkyl group contains 9 to 11
carbon atoms and having an average degree of polymerization of 1.5;
GLUCOPON.RTM. 600, described to be an alkyl polyglycoside in which
the alkyl group contains 12 to 16 carbon atoms and having an
average degree of polymerization of 1.4; PLANTAREN.RTM. 2000,
described to be an alkyl polyglycoside in which the alkyl group
contains 8 to 16 carbon atoms and having an average degree of
polymerization of 1.4; and, PLANTAREN.RTM. 1300, described to be an
alkyl polyglycoside in which the alkyl group contains 12 to 16
carbon atoms and having an average degree of polymerization of 1.6.
Other examples include alkyl polyglycoside surfactant compositions
which are comprised of mixtures of compounds of formula I wherein Z
represents a moiety derived from a reducing saccharide containing 5
or 6 carbon atoms; a is a number having a value from 1 to about 6;
b is zero; and R.sub.1 is an alkyl radical having from 8 to 20
carbon atoms. The compositions are characterized in that they have
increased surfactant properties and an HLB in the range of about 10
to about 16 and a non-Flory distribution of glycosides, which is
comprised of a mixture of an alkyl monoglycoside and a mixture of
alkyl polyglycosides having varying degrees of polymerization of 2
and higher in progressively decreasing amounts, in which the amount
by weight of polyglycoside having a degree of polymerization of 2,
or mixtures thereof with the polyglycoside having a degree of
polymerization of 3, predominate in relation to the amount of
monoglycoside, said composition having an average degree of
polymerization of about 1.8 to about 3. Such compositions, also
known as peaked alkyl polyglycosides, can be prepared by separation
of the monoglycoside from the original reaction mixture of alkyl
monoglycoside and alkyl polyglycosides after removal of the
alcohol. This separation may be carried out by molecular
distillation and normally results in the removal of about 70-95% by
weight of the alkyl monoglycosides. After removal of the alkyl
monoglycosides, the relative distribution of the various
components, mono- and poly-glycosides, in the resulting product
changes and the concentration in the product of the polyglycosides
relative to the monoglycoside increases as well as the
concentration of individual polyglycosides to the total. i.e. DP2
and DP3 fractions in relation to the sum of all DP fractions. Such
compositions are disclosed in U.S. Pat. No. 5,266,690, the entire
contents of which are incorporated herein by reference.
[0136] Other alkyl polyglycosides which can be used in the
compositions according to the invention are those in which the
alkyl moiety contains from 6 to 18 carbon atoms in which and the
average carbon chain length of the composition is from about 9 to
about 14 comprising a mixture of two or more of at least binary
components of alkylpolyglycosides, wherein each binary component is
present in the mixture in relation to its average carbon chain
length in an amount effective to provide the surfactant composition
with the average carbon chain length of about 9 to about 14 and
wherein at least one, or both binary components, comprise a Flory
distribution of polyglycosides derived from an acid-catalyzed
reaction of an alcohol containing 6-20 carbon atoms and a suitable
saccharide from which excess alcohol has been separated.
[0137] Also useful as nonionic surfactants are ethylene oxides
condensed with sorbitan fatty acid esters. Such materials are
presently commercially available under the tradename TWEEN (ex.
ICI) and/or CRILL (ex. Croda) which include polyoxyethylene
sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate,
polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan
tristearate, polyoxyethylene sorbitan monooleate, polyoxyethylene
sorbitan trioleates which are available in a variety of grades, and
with differing amounts of polyoxylethylene groups per molecule.
[0138] Further useful nonionic surfactants include
silicone-containing surfactants. A preferred class of silicone
containing surfactants are the polyalkylene oxide polysiloxanes
having a dimethyl polysiloxane hydrophobic moiety and one or more
hydrophilic polyalkylene side chains.
[0139] Preferred silicone-containing surfactants include those
according to the general formula (1):
R.sup.1--(CH.sub.3).sub.2SiO--[(CH.sub.3).sub.2SiO].sub.a--[(CH.sub.3)R.-
sup.1)SiO].sub.b--Si(CH.sub.3).sub.2--R.sup.1 (1)
wherein (a+b) is about 1 to about 50, specifically about 3 to about
30, more specifically about 10 to about 25, and each R.sup.1 is the
same or different and is selected from the group consisting of
methyl and a poly(ethyleneoxide/propyleneoxide) copolymer group
having the general formula (2):
--(CH.sub.2).sub.nO(C.sub.2H.sub.4O).sub.c(C.sub.3H.sub.6O).sub.dR.sup.2
(2)
with at least one R.sup.1 being a
poly(ethyleneoxide/propyleneoxide) copolymer group, and wherein n
is 3 or 4; total c (for all polyalkyleneoxy side groups) has a
value of 1 to about 100, preferably from about 6 to about 100;
total d is from 0 to about 14, preferably from 0 to about 3; and
more preferably d is 0; total c+d has a value of from about 5 to
about 150, preferably from about 9 to about 100 and each R.sup.2 is
the same or different and is selected from the group consisting of
hydrogen, an alkyl having 1 to 4 carbon atoms, and an acetyl group,
specifically hydrogen and methyl group. In one embodiment, each
polyalkylene oxide polysiloxane has at least one R.sup.1 group
being a poly(ethyleneoxide/propyleneoxide) copolymer group.
Examples of this type of surfactant are the SILWET Hydrostable 68,
611, and 212 (ex. Momentive Performance Materials.)
[0140] Non-limiting examples of further surfactants which may be
included in the pressurized, sprayable treatment compositions of
the invention include zwitterionic and amphoteric surfactants.
Zwitterionic surfactants may also be present either by themselves
or in admixture with another ionic surfactant providing there are
no troublesome interactions. Typical examples of amphoteric or
zwitterionic surfactants are alkyl betaines, alkyl amidobetaines,
aminopropionates, aminoglycinates, imidazolinium betaines and
sulfobetaines. Within this group, alkyl betaines and alkyl
amidobetaines are particularly preferred. Alkyl betaines are known
surfactants which are mainly produced by carboxyalkylation,
preferably carboxymethylation of aminic compounds. Typical examples
are the carboxymethylation products of hexyl methyl amine, hexyl
dimethyl amine, octyl dimethyl amine, decyl dimethyl amine, dodecyl
methyl amine, dodecyl dimethyl amine, dodecyl ethyl methyl amine,
C12/14 cocoalkyl dimethyl amine, myristyl dimethyl amine, cetyl
dimethyl amine, stearyl dimethyl amine, stearyl ethyl methyl amine,
oleyl dimethyl amine, C16/18 tallow alkyl dimethyl amine and
technical mixtures thereof.
[0141] Alkyl amidobetaines which represent carboxyalkylation
products of amidoamines are also suitable. Typical examples are
reaction products of fatty acids containing 6 to 22 carbon atoms,
namely caproic acid, caprylic acid, capric acid, lauric acid,
myristic acid, palmitic acid, palmitoleic acid, stearic acid,
isostearic acid, oleic acid, elaidic acid, petroselic acid,
linoleic acid, linolenic acid, elaeostearic acid, arachic acid,
gadoleic acid, behenic acid and erucic acid and technical mixtures
thereof, with N,N-dimethylaminoethyl amine, N,N-dimethylaminoproply
amine, N,N-diethylaminoethyl amine and N,N-diethylaminoproply amine
which are condensed with sodium chloroacetate. The condensation
product of C8/18 cocofatty acid-N,N-dimethylaminopropyl amide with
sodium chloroacetate is preferably used.
[0142] Further specific examples of particular amphoteric
surfactants which may be used in the pressurized, sprayable
treatment compositions of the invention include one or more
amphoteric surfactants. Exemplary amphoteric surfactants include
alkylampho(mono)acetates, alkylampho(di)acetates,
alkylampho(mono)propionates, and alkylampho(di)propionates.
Examples of these amphoteric surfactants can be found under the
tradename Miranol from Rhodia (Cranbury, N.J.). Some examples
include Miranol C2M-Conc. NP, described to be disodium
cocoamphodiacetate; Miranol FA-NP, described to be sodium
cocoamphotacetate; Miranol DM, described to be sodium
steroamphoacetate; Miranol HMA, described to be sodium
lauroamphoacetate; Miranol C2M, described to be
cocoamphodiprioponic acid; Miranol C2M-SF, described to be disodium
cocoamphodiproprionate; Miranol CM-SF Conc., described as being
cocoamphopropriate; Mirataine H2C-HA, described as sodium
lauiminodiproprionate; Miranol Ultra L-32, described as sodium
lauroamphoacetate; and Miranol Ultra C-37, described as sodium
cocoamphoacetate. Other amphoteric surfactants are also available
under the tradename Amphoterge from Lonza (Fair Lawn, N.J.) such as
Amphoterge K described to sodium cocoamphoproprionate; Amphoterge
K-2, described as disodium cocoamphodiproprionate; Amphoterge W,
described to be sodium cocoamphoacetate; and Amphoterge W-2,
described to be disodium cocoamphodiacetate.
[0143] Further useful amphoteric surfactants include those which
may be represented by the following general formula
##STR00006##
in which, R represents a C.sub.4 to C.sub.24 alkyl group, and is
preferably a C10 to C16 alkyl group, R1 and R2 independently
represent a C.sub.1 to C.sub.8 alkyl group, is preferably
--CH.sub.2CH.sub.2-- or --CH.sub.2CH.sub.2CH.sub.2--, and M may be
any salt-forming anion which permits water solubility or water
miscibility of the compound, e.g., chloride, bromide, methosulfate,
ethosulfate, lactate, saccharinate, acetate or phosphate. Such
compounds are presently commercially available, such as those
marketed in the Tomamine Amphoteric series of amphoteric
surfactants, ex. Air Products Inc.
[0144] While the one or more detersive surfactants may be present
in any effective amount which may be observed to improve the
microbicidal efficacy of the system of the essential constituents,
these one or more surfactants, when present, are advantageously
present in an amount of from about 0.001-15% wt., preferably from
about 0.01-10% wt. and particularly preferably from about 0.05-5%
wt., based on the total weight of the pressurized, sprayable
treatment composition within which they are present. In the
foregoing amounts, the essential quaternary ammonium compound(s)
should not be considered in the weight percentages of the one or
more further optional surfactants, although such quaternary
ammonium compound(s) are often classified as cationic surfactants.
Furthermore, the selection of any one or more further optional
surfactants should be made to ensure that it/they do not
deleteriously diminish the microbicidal properties of the essential
quaternary ammonium compound(s) which are essential to the
treatment compositions of the invention.
[0145] The inventive compositions most desirably, although not
always essentially, include at least one nonionic surfactant. An
example of an especially preferred nonionic surfactant is at least
one alcohol alkoxylate (e.g, ethoxylate, propoxylate) based
nonionic surfactant in an amount of from about 0.01-10% wt. In
order of increasing preference, when present, the at least one
nonionic surfactant comprises in % wt. at least 0.025, 0.05, 0.075,
0.1, 0.15, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6, 0.75, 0.8, 0.9, 1, 1.1,
1.2, 1.3, 1.4 and 1.5% wt. and similarly in order of increasing
preference the at least one nonionic surfactant comprises, in %
wt., not more than 10, 9, 8, 7.5, 7, 6, 5, 4.75, 4.5, 4, 3.75, 3.5,
3.25, 3, 2.75 and 2% wt. based on the total weight of a treatment
composition of which they form a part. In certain embodiments at
least one nonionic surfactant is necessarily present and is
considered as a further essential constituent of the invention, as
it is believed that the presence of a nonionic surfactant may
advantageously improve the speed and/or degree of control,
reduction or elimination of microorganisms. Especially preferred
nonionic surfactants and the amounts in which they are preferably
present are disclosed in one or more of the Examples.
[0146] In certain embodiments, the sole surfactants present in the
compositions are one or more of the cationic surfactants described
above, and/or one or more of the nonionic surfactants described
above.
[0147] In certain embodiments the sole surfactant(s) present is one
or more cationic surfactants.
[0148] In certain embodiments the sole additional surfactant(s)
present is one or more nonionic surfactants.
[0149] The pH of the pressurized, sprayable treatment compositions
is preferably established and thereafter maintained at a desired pH
or within a bounded pH range. A reasonable degree of flexibility in
formulating compositions of the invention is provided by judicious
control of the pH and the amount of the lower alkyl monohydric
alcohol present. Specific reference is made to the example
formulations described hereinafter which demonstrate this effect.
The pH of the inventive compositions is at least 5, but is
preferably greater and in certain particularly preferred
embodiments is substantially alkaline. While the pH of the
composition may be 5 or greater, preferably the pH of the
compositions is at least about 6, and more preferably is in the
range of from about 7-14, especially in the range of about 9-12.
Thus in preferred embodiments the pH of the pressurized, sprayable
treatment compositions (and/or microbicidal control system) is at
least 5, and in order of increasing preference is at least 6, 6.1,
6.2, 6.3, 6.4, 6.5, 6.6, 6.7, 6.8, 6.9, 7, 7.1, 7.2, 7.3, 7.4, 7.5,
7.6, 7.7, 7.8, 7.9, 8, 8.1, 8.2, 8.3, 8.4, 8.5, 8.6, 8.7, 8.8, 8.9,
9, 9.1, 9.2, 9.3, 9.4, 9.5, 9.6, 9.7, 9.8, 9.9, 10, 10.1, 10.2,
10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9, 11, 11.1, 11.2, 11.3,
11.4, 11.5, 11.6, 11.7, 11.8, 11.9, 12, 12.1, 12.2, 12.3, 12.4,
12.5. In preferred embodiments, and in order of increasing
preference the pH of the pressurized, sprayable treatment
compositions (and/or microbicidal control system) is not in excess
of: 12.5, 12.4, 12.3, 12.2, 12.1, 12, 11.9, 11.8, 11.7, 11.6, 11.5,
11.4, 11.3, 11.2, 11.1, 11, 10.9, 10.8, 10.7, 10.6, 10.5, 10.4,
10.3, 10.2, 10.1, 10, 9.9, 9.8, 9.7, 9.6, 9.5. It is expected that
compositions of the invention may have lower pHs, in the range of
1-14 if desired; however preferred pHs are indicated in the
foregoing ranges and are demonstrated by the Examples. In certain
preferred embodiments the pH of the compositions is less than 11.
The pH of the pressurized, sprayable treatment compositions may be
established, adjusted and/or maintained by the addition of an
effective amount of a pH adjustment constituent.
[0150] Optionally but preferably the pressurized, sprayable
treatment compositions of the invention include a pH adjusting
constituent which may be used to establish and/or maintain, viz.,
buffer, a pressurized, sprayable treatment composition at a desired
pH or within a bounded pH range. As pH adjusting constituents come
into consideration essentially any material, which may increase or
decrease the pH of the pressurized, sprayable treatment composition
is suitable as a pH adjusting constituent. Suitable pH adjusting
constituents are one or more acids and/or bases whether such are
based on organic and/or inorganic compounds or materials. By way of
non-limiting example pH adjusting agents include phosphorus
containing compounds, monovalent and polyvalent salts such as of
silicates, carbonates, and borates, certain acids and bases,
tartrates and certain acetates. Further exemplary pH adjusting
agents include mineral acids, basic compositions, and organic
acids, which are typically required in only minor amounts. By way
of further non-limiting example pH buffering compositions include
the alkali metal phosphates, polyphosphates, pyrophosphates,
triphosphates, tetraphosphates, silicates, metasilicates,
polysilicates, carbonates, hydroxides, and mixtures of the same.
Certain salts, such as the alkaline earth phosphates, carbonates,
and hydroxides, can also function as buffers. It may also be
suitable to use as buffers such materials as aluminosilicates
(zeolites), borates, aluminates and certain organic materials such
as gluconates, succinates, maleates, citrates, and their alkali
metal salts. Particularly useful and preferred is citric acid and
metal salts thereof such as sodium citrate which are widely
available and which are effective in providing these pH adjustment
and buffering effects. Further exemplary and useful pH adjusting
constituents include monoalkanolamines, dialkanolamines,
trialkanolamines, and alkylalkanolamines such as
alkyl-dialkanolamines, and dialkyl-monoalkanolamines. Such may also
function as detersive surfactants. The alkanol and alkyl groups are
generally short to medium chain length, that is, from 1 to 7
carbons in length. For di- and trialkanolamines and
dialkyl-monoalkanolamines, these groups can be combined on the same
amine to produce for example,
methylethylhydroxypropylhydroxylamine. One of ordinary skill in the
art can readily ascertain other members of this group. Preferred
alkanolamines include monoethanolamine, triethanolamine and the
both monoethanolamine and triethanolamine. Preferred respective
ratios of monoethanolamine to triethanolamine are disclosed in the
examples.
[0151] The use of a citrate as a pH adjusting agent, e.g, sodium
citrate, or citric acid, is preferred, as, while not wishing to be
bound by the following, it is hypothesized that the presence of a
citrate in the compositions of the invention facilitate the
availability of zinc ions in the compositions. It is hypothesized
that the disassociation of the zinc ions from the zinc ion source
material which releases zinc ions into the treatment composition
into the treatment composition may be reversible reaction, and the
concurrent presence of citrates in the compositions provides for
the formation of zinc salts of citrates (or of citric acid) which
is also believed to be a reversible reaction, but as the zinc of
the zinc salts of the citrates may be more easily disassociated
than the disassociation of zinc from the zinc ion source material,
such may increase the concentration of available free zinc ions in
the composition. Thus, it is preferred that the pH adjusting agent
comprise a citrate material (or citric acid), and preferably
further, that such be present in at least a molar equivalent or
excess of the zinc ion source material. Of course, where the zinc
ion source material includes, or preferably consists of zinc salt
of a citrate, such may satisfy this hypothesis.
[0152] The control of the pH of the sprayable treatment composition
may also advantageously improve the shelf storage stability of
pressurized aerosol canisters containing the sprayable treatment
compositions by reducing the likelihood or incidence of corrosion
of such canisters particularly at weld lines, bends or crimp
surfaces which are exposed to the pressurized sprayable treatment
compositions. Borate esters, such as monoethanolamine borate, and
monoisopropanolamine borate are examples of corrosion inhibitors,
although it is to be understood that other materials or
compositions known to the art, or otherwise disclosed in this
specification may be used in effective amounts.
[0153] When present, the one or more pH adjusting constituents are
included in amounts which are effective in establishing and/or
maintaining the pH of a pressurized, sprayable treatment
composition at or near the desired pH value or within a range of pH
values. Advantageously the one or more pH adjusting constituents
comprise from about 0.001-2.5% wt., preferably from about 0.01-1.5%
wt. of the pressurized, sprayable treatment composition of which
the one or more pH adjusting constituents form a part. Preferred pH
adjusting constituents include those demonstrated in one or more of
the Examples. In certain preferred embodiments, one or more pH
adjusting constituents are necessarily present and are to be
understood as essential constituents of the inventive
compositions.
[0154] A further optional constituent in the inventive pressurized,
sprayable treatment compositions is one or more chelating agents.
Exemplary useful chelating agents include those known to the art,
including by way of non-limiting example; aminopolycarboxylic acids
and salts thereof wherein the amino nitrogen has attached thereto
two or more substituent groups. Preferred chelating agents include
acids and salts, especially the sodium and potassium salts of
ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic
acid, N-hydroxyethylethylenediaminetriacetic acid, and of which the
sodium salts of ethylenediaminetetraacetic acid may be particularly
advantageously used. Such chelating agents may be omitted, or they
may be included in generally minor amounts such as from about
0.001-0.5% wt. based on the weight of the chelating agents and/or
salt forms thereof. In certain embodiments, one or more chelating
agents are necessarily present in the inventive compositions. When
present, advantageously, such chelating agents are included in the
present inventive composition in amounts from about 0.001-5% wt.,
but are most desirably present in reduced weight percentages from
about 0.01-0.5% wt. Particularly preferred corrosion inhibitor
constituents and pH adjusting constituents are disclosed with
reference to one or more of the Examples.
[0155] As the compositions of the invention are preferably provided
in conventional aerosol canisters and may be dispensed therefrom
via conventional aerosol valves, the use of one or more corrosion
inhibitor constituents to limit the corrosion of the aerosol
canister may be advantageous and such may be present in the
treatment compositions in effective amounts. Non-limiting examples
of compounds and materials which may be used include one or more of
phosphates such as monopotassium phosphate, dipotassium phosphate,
tripotassium phosphate, monosodium phosphate, disodium phosphate,
ammonium phosphate, nitrites such as sodium nitrite, ammonium
nitrite, ammonium hydroxide, potassium hydroxide, combinations of
triethanolamine with sodium benzoate and/or with other corrosion
inhibitors such as triethanolamine/sodium benzoate,
triethanolamine/sodium nitrite, a combination of
2-amino-2-methyl-1-propanol and 95% sodium benzoate,
tris(hydroxymethyl)aminomethane, borax, combinations of borax with
sodium nitrite and/or with other corrosion inhibitors, borate
esters, as well as commercially available preparations such as
MONACOR BE, CRODACOR BE, AMP-95, HOSTACOR 2732, SANDOCORIN 8160,
ELFUGIN AKT Liquid 300, or combinations thereof. When present, the
one or more corrosion inhibitor constituents are included in
amounts which are effective in controlling can corrosion and/or
maintaining the pH of a pressurized, sprayable treatment
composition at the desired pH value or within a range of pH values.
In certain preferred embodiments, one or more corrosion inhibitor
constituents are necessarily present and are essential constituents
of the invention. Advantageously the one or more corrosion
inhibitor constituents comprise from about 0.00001-2.5% wt.,
preferably from about 0.0001-0.5% wt. of the pressurized, sprayable
treatment composition of which the one or more corrosion inhibitor
constituents form a part.
[0156] Particular care is to be undertaken in the specification of
corrosion inhibitors and/or chelating agents in the inventive
compositions. The inventors have found that excessive amounts of
chelating agents and/or corrosion inhibitors may in some instances
undesirably react with or bind with the zinc ions present in the
pressurized, sprayable treatment compositions thereby reducing
their availability as free ions in the said compositions.
[0157] Similarly, care should be undertaken in the selection of
chelating agents as well, e.g, ethylene diaminetetraacetic acid,
which may also undesirably reduce the availability of free zinc
ions in the said compositions. Desirably when such are present they
are included in only limited amounts so as not to deleteriously
affect the improved microbicidal efficacy of the inventive
compositions, or chelating agents may be excluded from the
inventive compositions.
[0158] It is to be understood that one or more of the foregoing
described corrosion inhibitor constituents or pH adjusting
constituents may provide a dual function and provide both
effects.
[0159] The sprayable, pressurized inanimate surface treatment
compositions of the invention may include one or more further
optional constituents or materials which impart a desired technical
and/or aesthetic features of the inventive compositions.
[0160] The treatment compositions of the invention may optionally
include one or more acids, which include not only organic and
inorganic acids but also acid salts of organic acids. Preferred
examples of the organic acid to be used in the present invention
include linear aliphatic acids such as formic acid, acetic acid,
propionic acid, butyric acid and valeric acid; dicarboxylic acids
such as oxalic acid, malonic acid, succinic acid, glutaric acid,
adipic acid, pimelic acid, fumaric acid and maleic acid; acidic
amino acids such as glutamic acid and aspartic acid; and hydroxy
acids such as glycolic acid, lactic acid, hydroxyacrylic acid,
alpha-hydroxybutyric acid, glyceric acid, tartronic acid, malic
acid, tartaric acid and citric acid, as well as acid salts of these
organic acids. Exemplary inorganic acids include phosphoric acid,
potassium dihydrogenphosphate, sodium dihydrogenphosphate, sodium
sulfite, potassium sulfite, sodium pyrosulfite (sodium
metabisulfite), potassium pyrosulfite (potassium metabisulfite),
acid sodium hexametaphosphate, acid potassium hexametaphosphate,
acid sodium pyrophosphate, acid potassium pyrophosphate and
sulfamic acid. These acids can be used singly or as a mixture of
two or more inorganic and/or organic acids. Such one or more acids
may be used to adjust the pH of the inventive compositions, and/or
buffer the pH of the treatment compositions. When present, these
may be included in effective amounts. Particularly useful is citric
acid and metal salts thereof such as sodium citrate which are
widely available and which are effective in providing these pH
adjustment and buffering effects. These should be screened however
to ensure that they do not undesirably complex with or in other
ways deactivate any quaternary ammonium compound(s) which may be
present.
[0161] The pressurized, sprayable treatment compositions of the
invention may also include one or more further compounds,
constituents or materials which provide an ancillary microbicidal
benefit or effect (antimicrobials). These are distinguished from
the essential constituents of the invention described above. When
present, they may be included in amounts which are effective in
order to provide an ancillary microbicidal benefit. Non-limiting
examples of such materials include non-cationic microbicidal agents
which are particularly useful in the present invention: pyrithiones
(especially zinc pyrithione which is also known as ZPT),
dimethyldimethylol hydantoin (Glydant),
methylchloroisothiazolinone/methylisothiazolinone (Kathon CG),
sodium sulfite, sodium bisulfite, imidazolidinyl urea (Germall
115), diazolidinyl urea (Germaill II), benzyl alcohol,
2-bromo-2-nitropropane-1,3-diol (Bronopol), formalin
(formaldehyde), iodopropenyl butylcarbamate (Polyphase P100),
chloroacetamide, methanamine, methyldibromonitrile glutaronitrile
(1,2-Dibromo-2,4-dicyanobutane or Tektamer), glutaraldehyde,
5-bromo-5-nitro-1,3-dioxane (Bronidox), phenethyl alcohol,
o-phenylphenol/sodium o-phenylphenol, sodium hydroxymethylglycinate
(Suttocide A), polymethoxy bicyclic oxazolidine (Nuosept C),
dimethoxane, thimersal dichlorobenzyl alcohol, captan,
chlorphenenesin, dichlorophene, chlorbutanol, glyceryl laurate,
halogenated diphenyl ethers like 2,4,4-trichloro-2-hydroxy-diphenyl
ether (Triclosan or TCS), 2,2-dihydroxy-5,5-dibromo-diphenyl ether,
phenolic compounds like phenol, 2-methyl phenol. 3-methyl phenol,
4-methyl phenol, 4-ethyl phenol, 2,4-dimethyl phenol, 2,5-dimethyl
phenol, 3,4-dimethyl phenol, 2,6-dimethyl phenol, 4-n-propyl
phenol, 4-n-butyl phenol, 4-n-amyl phenol. 4-tert-amyl phenol,
4-n-hexyl phenol, 4-n-heptyl phenol, mono- and poly-alkyl and
aromatic halophenols such as p-chlorophenol, methyl p-chlorophenol,
ethyl p-chlorophenol, n-propyl p-chlorophenol, n-butyl
p-chlorophenol, n-amyl p-chlorophenol, sec-amyl p-chlorophenol,
n-hexyl p-chlorophenol, cyclohexyl p-chlorophenol, n-heptyl
p-chlorophenol, n-octyl p-chlorophenol, o-chlorophenol, methyl
o-chlorophenol, ethyl o-chlorophenol, n-propyl o-chlorophenol,
n-butyl o-chlorophenol, n-amyl o-chlorophenol, tert-amyl
o-chlorophenol, n-hexyl o-chlorophenol, n-heptyl o-chlorophenol,
o-benzyl p-chlorophenol, o-benzyl-m-methyl p-chlorophenol,
o-benzyl-m, m-dimethyl p-chlorophenol, o-phenylethyl
p-chlorophenol, o-phenylethyl-m-methyl p-chlorophenol, 3-methyl
p-chlorophenol, 3,5-dimethyl p-chlorophenol. 6-ethyl-3-methyl
p-chlorophenol, 6-n-propyl-3-methyl p-chlorophenol,
6-iso-propyl-3-methyl p-chlorophenol, 2-ethyl-3,5-dimethyl
p-chlorophenol. 6-sec-butyl-3-methyl p-chlorophenol,
2-iso-propyl-3,5-dimethyl p-chlorophenol, 6-diethylmethyl-3-methyl
p-chlorophenol, 6-iso-propyl-2-ethyl-3-methyl p-chlorophenol,
2-sec-amyl-3,5-dimethyl p-chlorophenol 2-diethylmethyl-3,5-dimethyl
p-chlorophenol, 6-sec-octyl-3-methyl p-chlorophenol,
p-chloro-m-cresol, p-bromophenol, methyl p-bromophenol, ethyl
p-bromophenol, n-propyl p-bromophenol, n-butyl p-bromophenol,
n-amyl p-bromophenol, sec-amyl p-bromophenol, n-hexyl
p-bromophenol, cyclohexyl p-bromophenol, o-bromophenol, tert-amyl
o-bromophenol, n-hexyl o-bromophenol, n-propyl-m,m-dimethyl
o-bromophenol, 2-phenyl phenol, 4-chloro-2-methyl phenol,
4-chloro-3-methyl phenol, 4-chloro-3,5-dimethyl phenol,
2,4-dichloro-3,5-dimethylphenol, 3,4,5,6-terabromo-2-methylphenol,
5-methyl-2-pentylphenol, 4-isopropyl-3-methylphenol,
para-chloro-meta-xylenol, dichloro meta xylenol, chlorothymol,
5-chloro-2-hydroxydiphenylmethane, resorcinol and its derivatives
including methyl resorcinol, ethyl resorcinol, n-propyl resorcinol,
n-butyl resorcinol, n-amyl resorcinol, n-hexyl resorcinol, n-heptyl
resorcinol, n-octyl resorcinol, n-nonyl resorcinol, phenyl
resorcinol, benzyl resorcinol, phenylethyl resorcinol, phenylpropyl
resorcinol, p-chlorobenzyl resorcinol, 5-chloro
2,4-dihydroxydiphenyl methane, 4-chloro 2,4-dihydroxydiphenyl
methane, 5-bromo 2,4-dihydroxydiphenyl methane, and 4-bromo
2,4-dihydroxydiphenyl methane, bisphenolic compounds like
2,2-methylene bis (4-chlorophenol), 2,2-methylene bis
(3,4,6-trichlorophenol), 2,2-methylene bis
(4-chloro-6-bromophenol), bis (2-hydroxy-3,5-dichlorophenyl)
sulphide, and bis (2-hydroxy-5-chlorobenzyl)sulphide, benzoic
esters (parabens) like methylparaben, propylparaben, butylparaben,
ethylparaben, isopropylparaben, isobutylparaben, benzylparaben,
sodium methylparaben, and sodium propylparaben, halogenated
carbanilides (e.g., 3,4,4-trichlorocarbanilides (Triclocarban or
TCC), 3-trifluoromethyl-4,4-dichlorocarbanilide,
3,3,4-trichlorocarbanilide, etc.).
[0162] Of these, preferred are phenol based non-cationic
antimicrobals, especially those based on one or more phenolic
compounds, particularly 2-hydroxydiphenyl compounds which may be
exemplified by the following classes of compounds:
##STR00007##
wherein Y is chlorine or bromine, Z is SO.sub.2H, NO.sub.2, or
C.sub.1-C.sub.4 alkyl, r is 0 to 3, o is 0 to 3, p is 0 or 1, m is
0 or 1, and n is 0 or 1. In preferred embodiments, Y is chlorine or
bromine, m is 0, n is 0 or 1, o is 1 or 2, r is 1 or 2, and p is 0,
and according to especially preferred embodiments. Y is chlorine, m
is 0, n is 0, o is 1, r is 2, and p is 0.
[0163] Particularly useful 2-hydroxydiphenyl compounds include
those which may be represented by the structure:
##STR00008##
which is commonly referred to as "TRICLOSAN" and which is presently
commercially available from Ciba Specialty Chemicals Corp., as well
as halogenated carbanilides, e.g., TCC.
[0164] Further exemplary useful phenolic based disinfecting agents
include 2,2'-hydroxy-5,5'-dibromo-diphenyl ether which may be
represented by the structure:
##STR00009##
wherein R.sub.1 is hydro, hydroxy, C.sub.1-C.sub.4 alkyl, chloro,
nitro, phenyl, or benzyl; R2 is hydro, hydroxy, C, --C.sub.6 alkyl,
or halo; R.sub.3 is hydro, C.sub.1-C.sub.6 alkyl, hydroxy, chloro,
nitro, or a sulfur in the form of an alkali metal salt or ammonium
salt; R.sub.4 is hydro or methyl, and R.sub.5 is hydro or nitro.
Halo is bromo or, preferably, chloro.
[0165] Specific examples of phenol derivatives include, but are not
limited to, chlorophenols (o-, m-, p-), 2,4-dichlorophenol,
p-nitrophenol, picric acid, xylenol, p-chloro-m-xylenol, cresols
(o-, m-, p-), p-chloro-m-cresol, pyrocatechol, resorcinol,
4-n-hexylresorcinol, pyrogallol, phloroglucin, carvacrol, thymol,
p-chlorothymol, o-phenylphenol, o-benzylphenol,
p-chloro-o-benzylphenol, phenol, 4-ethylphenol, and
4-phenolsulfonic acid.
[0166] Still further useful phenol derivatives include those which
may be represented by the structure:
##STR00010##
wherein X is sulfur or a methylene group, R.sub.1 and R'.sub.1 are
hydroxy, and R.sub.2, R'.sub.2, R.sub.3, R'.sub.3, R.sub.4,
R'.sub.4, R.sub.5, and R'.sub.5, independent of one another, are
hydro or halo. Specific, nonlimiting examples of diphenyl compounds
are hexachlorophene, tetrachlorophene, dichlorophene,
2,3-dihydroxy-5,5'-dichlorodiphenyl sulfide,
2,2'-dihydroxy-3,3',5,5'-tetrachlorodiphenyl sulfide,
2,2'-dihydroxy-3,5',5,5', 6,6'-hexachlorodiphenyl sulfide, and
3,3'-dibromo-5,5'-dichloro-2,2'-dihydroxydiphenylamine. Of the
foregoing, a particularly useful phenol derivative is commonly
referred to as triclocarban, or 3,4,4'-trichlorocarbanilide as well
as derivatives thereto. When present, one or more such further
compounds, constituents or materials which provide an ancillary
microbicidal benefit or effect may be present in effective amounts,
e.g., in amounts of up to about 5% wt., although depending upon the
efficacy of one or more selected such further compounds,
constituents or materials are usually effective in reduced amounts,
e.g., 0.001-2% wt. of the treatment composition.
[0167] The pressurized, sprayable treatment compositions of the
invention may optionally include a fragrance constituent, which may
be based on natural and/or synthetic fragrances and most commonly
are mixtures or blends of a plurality of such fragrances,
optionally in conjunction with a carrier such as an organic solvent
or a mixture of organic solvents in which the fragrances are
dissolved, suspended or dispersed. Such may be natural fragrances,
e.g, natural extracts of plants, fruits, roots, stems, leaves, wood
extracts, e.g. terpineols, resins, balsams, animal raw materials,
e.g., civet and beaver, as well as typical synthetic perfume
compounds which are frequently products of the ester, ether,
aldehyde, ketone, alcohol and hydrocarbon type, e.g., benzyl
acetate, linalyl acetate, citral, citronellal, methyl cedryl
ketone, eugenol, isoeugenol, geraniol, linalool and typically it is
preferred to use mixtures of different perfume compounds which,
together, produce an agreeable fragrance. Other suitable perfume
oils are essential oils of relatively low volatility which are
mostly used as aroma components. Examples are sage oil, camomile
oil, clove oil, melissa oil, mint oil, cinnamon leaf oil,
lime-blossom oil, juniper berry oil, vetiver oil, olibanum oil,
galbanum oil, labolanum oil and lavendin oil. When present in a
pressurized, sprayable treatment composition, in accordance with
certain of the preferred embodiments, the fragrance constituent may
be present in any effective amount such that it can be discerned by
a consumer of the composition, however such is advantageously
present in amounts of up to about 1% wt., preferably are present in
amounts of from about 0.00001% wt. to about 0.5% wt., and most
preferably is present in an amount of from about 0.0001% wt. to
0.5% wt. based on the total weight of the treatment composition of
which it forms a part.
[0168] A further optional constituent of pressurized, sprayable
treatment compositions of the invention include colorant, such as
dyes and pigments which may be used to impart a color to the
compositions of which they form a part.
[0169] The pressurized, sprayable treatment compositions of the
invention may also optionally include a preservative constituent
which is used to control the undesired presence of microorganisms
within the treatment composition which may occur, particularly when
the treatment composition is in long-term storage and/or at
elevated temperatures. While these are normally not present due to
the microbicidal efficacy themselves of the compositions as taught
herein, such ancillary preservative constituents may be included in
minor but effective amounts. Nonlimiting examples include one or
more of parabens, including methyl parabens and ethyl parabens,
glutaraldehyde, formaldehyde, 2-bromo-2-nitropropoane-1,3-diol,
5-chloro-2-methyl-4-isothiazolin-3-one,
2-methyl-4-isothiazoline-3-one, and mixtures thereof. One exemplary
composition is a combination 5-chloro-2-methyl-4-isothiazolin-3-one
and 2-methyl-4-isothiazolin-3-one where the amount of either
component may be present in the mixture anywhere from 0.001 to
99.99 weight percent, based on the total amount of the
preservative. Further exemplary useful preservatives include those
which are commercially including a mixture of
5-chloro-2-methyl-4-isothiazolin-3-one and
2-methyl-4-isothiazolin-3-one marketed under the trademark
KATHON.RTM. CG/ICP as a preservative composition presently
commercially available from Rohm and Haas (Philadelphia, Pa.).
While such preservative composition may be omitted, when present it
is advantageously from about 0.00001% wt. to about 0.5% wt., based
on the total weight of the treatment composition of which it forms
a part.
[0170] The pressurized, sprayable treatment compositions of the
invention may include one or more further organic solvents, which
are differentiated from the essential alkyl aliphatic monohydric
alcohol constituent. Such further optional organic solvents may
include one or more of: alcohols other than the essential lower
alkyl aliphatic monohydric alcohol described previously, glycols,
acetates, ether acetates, glycerols, as well as polyethylene
glycols and glycol ethers. Mixtures of these further optional
organic solvents can also be used. Typically such further one or
more organic solvents are ones which have no appreciable
microbicidal effect and are thus differentiated from the essential
alkyl aliphatic monohydric alcohol constituent. Non-limiting
examples of useful glycol ethers and examples include those glycol
ethers having the general structure
R.sub.a--O--[CH.sub.2--CH(R)--(CH.sub.2)--O].sub.n--H, wherein
R.sub.a is C.sub.1-20 alkyl or alkenyl, or a cyclic alkane group of
at least 6 carbon atoms, which may be fully or partially
unsaturated or aromatic; n is an integer from 1 to 10, preferably
from 1 to 5; each R is selected from H or CH.sub.3; and a is the
integer 0 or 1. Specific and preferred solvents are selected from
propylene glycol methyl ether, dipropylene glycol methyl ether,
tripropylene glycol methyl ether, propylene glycol n-propyl ether,
ethylene glycol n-butyl ether, diethylene glycol n-butyl ether,
diethylene glycol methyl ether, propylene glycol, ethylene glycol,
diethylene glycol monoethyl ether acetate and the like. When
present such further optional one or more organic solvents may be
present in any effective amount, preferably in amounts of between
about 0.001-10% wt., and preferably between about 0.01-5% wt. based
on the total weight of the treatment composition of which they form
a part.
[0171] When one or more such further optional constituents are
present in the pressurized, sprayable treatment compositions,
preferably their cumulative amount does not exceed about 25% wt.
and more preferably does not exceed about 20% wt., of the treatment
composition of which they form a part.
[0172] When one or more such further optional constituents are
present in the treatment compositions, preferably their cumulative
amount does not exceed about 25% wt. and preferably does not exceed
about 20% wt., of the treatment composition of which they form a
part.
[0173] The inventive compositions, prior to being combined with the
propellant constituent and pressurized, are preferably liquids
which have a viscosity in the range of about 100 centipoise ("cP")
or less, preferably and in order of increasing preference,
viscosities of about 75 cP, 50 cP, 25 cP, 20 cP, 15 cP, 10 cP, 5
cP, 3 cP, 2 cP, and 1 cP, when measured using conventional
quantitative method, e.g., as measured at 20.degree. C. or
25.degree. C. by a Brookfield Type LVT or Type RVT viscometer using
a standard spindle provided by that manufacturer and measuring the
samples at room temperature (20-25.degree. C.).
[0174] As the pressurized, sprayable treatment compositions taught
herein are used to treat inanimate surfaces including porous and
nonporous surfaces and are not provided as a topical skin treatment
composition or personal care composition or for that matter as a
wound dressing or a preparation for use in wound dressings, the
treatment compositions most preferably exclude (unless already
described previously) as constituents known-art additives and
adjuvants which are conventional in the cosmetic, pharmaceutical or
dermatological field, specifically hydrophilic or lipophilic
gelling agents, hydrophilic or lipophilic active agents,
humectants, opacifiers, light stabilizers including UV absorbers,
and Polyquaternium type polymers which do not provide an
antimicrobial benefit.
[0175] The pressurized, sprayable treatment compositions also most
preferably exclude (unless already described previously) thickener
components especially one or more of polysaccharide thickeners such
as cellulose, alkyl celluloses, alkoxy celluloses, hydroxy alkyl
celluloses, naturally occurring polysaccharide polymers such as
xanthan gum, guar gum, locust bean gum, tragacanth gum, or
derivatives thereof, polycarboxylate polymers, polyacrylamides,
clays, and mixtures thereof.
[0176] The pressurized, sprayable treatment compositions of the
invention are provided in a pressurized form, and are most
preferably packaged or sold as vendible articles in pressured
containers, e.g., aerosol canisters. These treatment compositions
are desirably dispensed by releasing the composition through a
manually operated or a power driven motor driven, pressure driven,
solenoid driven) actuator or valve, such as a conventional aerosol
canister and valve which permits for the egress of the contents of
the pressurized container via the actuator or valve. Between such
dispensing operations however, the contents of such a container
which includes the treatment composition are pressurized until
either the contents of the pressurized container, viz., the
treatment composition have been evacuated, and/or the propellant
has been dispensed. Thus a further aspect of the invention provides
a pressurized dispensing container containing the inventive
composition as described herein.
[0177] Thus a further aspect of the invention provides a
pressurized dispensing container containing the inventive
composition as described herein. Such pressurized, sprayable
treatment compositions provided in such a form as a vendible
article may be used in the treatment of inanimate surfaces.
[0178] As the pressurized, sprayable treatment compositions
according to the invention are most advantageously provided as an
"aerosol" type product wherein they are discharged from a
pressurized aerosol container, which useful pressurized aerosol
containers may be based on glass or plastic containers, such
containers are more advantageously pressurized metal canisters,
especially coated and uncoated steel canisters, which when coated
may be coated with a more corrosion resistant metal such as tin
and/or may be provided with a resin, lacquer, plastics or polymeric
coating which also improves the corrosion resistance of the
container particularly when it is pressurized. Aluminum containers
are advantageously used, as well as other metal or metallic
containers or materials. Any of the forgoing containers may include
a resin, lacquer, polymeric or plastics coating which may retard
the corrosion of the pressurized canister. If the inventive
compositions are used in an aerosol type product, as is strongly
preferred, it is preferred that corrosion resistant aerosol
containers, such as coated or lined aerosol containers be used.
Such are preferred as they are known to be resistant to the effects
of acidic or caustic formulations.
[0179] The pressurized, sprayable treatment composition may be
dispensed from the pressurized dispensing container directly to a
surface to be treated. Alternately the pressurized, sprayable
treatment composition can be dispensed from the pressurized
dispensing container onto a substrate or other article which can
then be used to deliver the treatment composition to a surface to
be treated. Preferably such substrates or other articles are
porous. Examples of such a substrate or other article include,
without limitation, sponges, wipe articles, towels, cloths, pads
and the like. Wipe articles can be of a woven or non-woven nature.
Fabric substrates can include nonwoven or woven pouches, sponges,
or in the form of abrasive or non-abrasive cleaning pads. Such
fabrics are known commercially in this field and are often referred
to as wipes. Such substrates can be resin bonded, hydroentanged,
thermally bonded, meltblown, needlepunched or any combination of
the former. Generally, such wipe articles are substantially planar
in configuration, and have a thickness which is much less
(generally at least 10 times less, preferably at least 100 times
less) then the length and/or width of the wipe article. As such,
such generally planar wipe articles are typically considered to be
substantially "two-dimensional" type articles.
[0180] Nonwoven fabrics may be a combination of wood pulp fibers
and textile length synthetic fibers formed by well known dry-form
or wet-lay processes. Synthetic fibers such as rayon, nylon, orlon
and polyester as well as blends thereof can be employed. The wood
pulp fibers should comprise about 30 to about 60 percent by weight
of the nonwoven fabric, preferably about 55 to about 60 percent by
weight, the remainder being synthetic fibers. The wood pulp fibers
provide for absorbency, abrasion and soil retention whereas the
synthetic fibers provide for substrate strength and resiliency.
[0181] The substrate of the wipe may also be a film forming
material such as a water soluble polymer. Such self-supporting film
substrates may be sandwiched between layers of fabric substrates
and heat sealed to form a useful substrate. The free standing films
can be extruded utilizing standard equipment to devolatilize the
blend. Casting technology can be used to form dry films, or a
liquid blend can be saturated into a carrier and then dried in a
variety of known methods.
[0182] The pressurized, sprayable treatment compositions can also
be applied to foams and sponges, such as open celled or closed
celled sponges which may be based on naturally occurring or
synthetically produced polymers, e.g., hydrophobic polymer sponges
such as based on one or more polyolefins, e.g., polyurethane, as
well as hydrophilic polymer foams, e.g. those based on regenerated
cellulose, or melamine-formaldehyde resins, as well as natural
sponges. The specific type of sponge should be selected to be
compatible with the type of pressurized, sprayable treatment
composition with which it will be used.
[0183] The treatment compositions of the present invention may be
absorbed onto the wipe to form a saturated wipe and sold as a
vendible product. The wipe can then be sealed individually in a
pouch which can then be opened when needed or a multitude of wipes
can be placed in a container for use on an as-needed basis. The
container, when closed, is sufficiently sealed to prevent
evaporation of any components from the compositions. Thus a further
aspect of the invention provides a closed container containing one
or more wipes which include the treatment composition as described
herein.
[0184] The treatment compositions of the invention may be used to
provide or impart a microbicidal effect on treated inanimate
surfaces. Preferably the pressurized, sprayable treatment
compositions are characterized in exhibiting a microbicidal benefit
when tested against one or more challenge microorganisms according
to one or more of the following standardized test protocols: ASTM
E1052 Standard Test Method for Efficacy of Antimicrobial Agents
against Viruses in Suspension. or ASTM E1053 Standard Test Method
to Assess Virucidal Activity of Chemicals Intended for Disinfection
of Inanimate, Nonporous Environmental Surfaces, or European
Standard Surface Test, EN13697 or AOAC Germicidal Spray Products as
Disinfectant Test Method, AOAC Index, 17.sup.th Ed. (2000). In
particularly preferred embodiments the pressurized, sprayable
treatment compositions exhibit a high degree of microbicidal
efficacy against various undesirable microorganisms (sometimes
referred to as `pathogens`) including various bacteria,
mycobacteria, viruses, and fungi. In particularly preferred
embodiments pressurized, sprayable treatment compositions of the
invention exhibit a high degree of microbicidal efficacy against
poliovirus type 1 (Sabin) ("PV1").
[0185] The pressurized, sprayable treatment compositions may be
applied to inanimate surfaces in order to impart a cleaning effect
thereto, but preferably are applied to impart a microbicidal
benefit thereto. Inanimate surfaces include hard surfaces, which
are typically nonporous hard surfaces. By way of example, hard
surfaces include surfaces composed of refractory materials such as:
glazed and unglazed tile, brick, porcelain, ceramics as well as
stone including marble, granite, and other stones surfaces; glass;
metals; plastics e.g. polyester, vinyl; fiberglass, Formica.RTM.,
Corian.RTM. and other hard surfaces known to the industry. Hard
surfaces which are to be particularly denoted are lavatory
fixtures, lavatory appliances (toilets, bidets, shower stalls,
bathtubs and bathing appliances), wall and flooring surfaces
especially those which include refractory materials and the like.
Further hard surfaces which are particularly denoted are those
associated with kitchen environments and other environments
associated with food preparation. Hard surfaces include those
associated with hospital environments, medical laboratories and
medical treatment environments. Inanimate surfaces which may be
treated by the surface treatment compositions of the invention
include soft surfaces, non-limiting examples of which include:
carpets, rugs, upholstery, curtains and drapes, fabrics, textiles,
garments, and the like
[0186] According to certain embodiments of the invention there are
provided processes for the treatment of surfaces, including
inanimate hard surfaces and inanimate soft surfaces which process
includes the step of: contacting such a surface which is in need of
treatment or upon which the presence of one or more undesirable
microorganisms are suspected or are known to be present, with an
effective amount of a treatment composition as described herein to
provide a treatment benefit thereto, preferably to provide a
microbicidal benefit to the surface, particularly against various
undesirable microorganisms (sometimes referred to as `pathogens`)
including various bacteria, mycobacteria, viruses, and fungi, and
particularly preferably against poliovirus type 1 (Sabin) ("PV1").
Such methods require the application of an effective amount of a
treatment composition as taught herein to such surfaces, so that
the desired microbicidal benefit is imparted to the treated
surface. Desirably such an effective amount is a sufficient amount
of a sprayable, pressurized treatment composition which will
provide at least a 1 log.sub.10 (log 10) reduction, more preferably
at least, and in order of increasing preference, a 1.25, 1.5, 1.75,
2, 2.25, 2.5, 2.75, 3, 3.25, 3.5, 3.75, 4, 4.25, 4.5, 4.75, and 5
log.sub.10 reduction (or even higher degrees of log 10 reduction as
disclosed with reference to one or more of the Examples) against
one or more challenge microorganisms, (with the stated log 10
reduction indicated as preferably being beyond cytotoxicity) and
preferably against poliovirus type 1 (Sabin) ("PV1") in accordance
with one or more of the testing protocols described hereinafter,
and/or degrees of microbicidal efficacy of poliovirus type 1
(Sabin) or other challenge microorganism, as are demonstrated with
reference to one or more of the Examples. Preferred embodiments of
the invention provide bactericidal and/or fungicidal and/or
mycobactericidal and/or virucidal benefits to treated inanimate
surfaces.
[0187] With reference to the Examples described later in the
tables, the disclosed compositions were subjected to one or more of
the following test protocols in order to evaluate their
microbicidal efficacy against one or more of the other challenge
microorganisms which are identified on Table B. As is known in the
art, amongst the most difficult to control or eradicate are
viruses, particularly poliovirus type 1 (Sabin), and while
microbicidal efficacy against the poliovirus type 1 (Sabin)
presumptively demonstrates that the same composition would be
expected to be effective against the bacteria and the other viruses
disclosed on Table B, the converse is not expected to be true by a
skilled artisan. Thus, for example, a composition which exhibits
good microbicidal efficacy against Gram-positive or Gram-negative
bacteria, would not be expected to be particularly effective
against the poliovirus type 1 (Sabin), while the converse would be
expected to be true. Further, even demonstrated efficacy of a
composition against a relatively easier to control or eradicate
viruses, such as the human Hepatitis A virus, or Human adenovirus,
rotaviruses, influenza viruses, herpes simplex type 1 or 2 would
not necessarily be expected by a skilled artisan to be particularly
effective against the poliovirus type 1 (Sabin), while the converse
would be expected to be true.
[0188] Preferred and particularly preferred treatment compositions
of the invention demonstrate a microbicidal benefit when tested
according to the standardized protocol outlined in ASTM E1052
Standard Test Method for Efficacy of Antimicrobial Agents against
Viruses in Suspension. This test is per se, known to the art.
Preferred treatment compositions exhibit a microbicidal benefit
against one, but preferably against two or more of the following
challenge organisms, specifically "challenge" viruses: hepatitis A
(supplied as hepatitis A virus, strain MH-175 ex. Dr. Mark Sobsey,
University of North Carolina, Chapel Hill, N.C.; human adenovirus
type 5 (supplied as ATCC VR-5); feline calicivirus strain F-9 (a
surrogate for noroviruses) (supplied as ATCC VR-782); herpes
simplex type 1 (supplied as ATCC VR-1493); human rhinovirus type 14
strain 1059 (supplied as ATCC VR-284), and especially preferably
against poliovirus type 1 (Sabin) (supplied by U.S. Centers for
Disease Control and Prevention (CDC)), in accordance with this test
protocol. As is known to the skilled artisan, of these forgoing
challenge viruses, the most resistant to control or eradication is
the poliovirus type 1 (Sabin) and it is commonly presumed that any
composition which shows an effective degree of control or
eradication against the poliovirus type 1 (Sabin) virus will
exhibit an even greater degree of control or eradication of the
further prior listed viruses. As is known from the literature,
e.g., Hierarchy of susceptibility of viruses to environmental
surface disinfectants: a predictor of activity against new and
emerging viral pathogens. J. AOAC International 90:1655-1658,
Sattar, S. A. (2007)), the efficacy of a composition in controlling
or eradicating poliovirus type 1 (Sabin) provides an excellent
prediction of the composition's efficacy against further challenge
viruses.
[0189] Preferred treatment compositions of the invention
demonstrate a microbicidal benefit when tested according to the
standardized protocol outlined in ASTM E1053 Standard Test Method
to Assess Virucidal Activity of Chemicals Intended for Disinfection
of Inanimate, Nonporous Environmental Surfaces. This test is also,
per se, known to the art. Preferred treatment compositions exhibit
a microbicidal benefit against poliovirus type 1 (Sabin) (supplied
by U.S. Centers for Disease Control and Prevention (CDC)), in
accordance with this test protocol. Again, as is known to the
skilled artisan, of these forgoing challenge viruses the most
resistant to control or eradication is the poliovirus type 1
(Sabin) and is it commonly presumed that any composition which
shows an effective degree of control or eradication against the
poliovirus type 1 (Sabin) will exhibit an even greater degree of
control or eradication of many other viruses, including
adenoviruses, rotaviruses, hepatitis A virus, feline calicivirus
strain F-9 (surrogate for norviruses), herpes simplex type 1 and
human rhinovirus type 14 strain 1059 as identified above.
[0190] Preferred treatment compositions of the invention
demonstrate a microbicidal benefit when tested according to the
standardized protocol outlined in European Standard Surface Test,
EN13697. This test too is, per se, known to the art. Preferred
treatment compositions exhibit a microbicidal benefit against one
or more of the following bacteria or fungi: Staphylococcus aureus
(supplied as ATCC 6538); Escherichia coli (supplied as ATCC 10536);
Pseudomonas aeruginosa (supplied as ATCC 15442); Enterococcus hirae
(supplied as ATCC 10541) and/or the fungus, Trichophyton
mentagrophytes (supplied as ATCC 9533) in accordance with the
protocols of the test.
[0191] Certain preferred treatment compositions of the invention
also demonstrate a microbicidal benefit when tested according to
the standardized protocol identified as the AOAC Germicidal Spray
Products as Disinfectant Test Method, AOAC Index, 17.sup.th Ed.
(2000). This test is also, per se, known to the art. Preferred
treatment compositions exhibit a microbicidal benefit against one
or more of the following bacteria or fungi: Staphylococcus aureus
("S. aureus" or "Sa") (supplied as ATCC 6538); Escherichia coli
("E. coli", or "Ec") (supplied as ATCC 10536), in accordance with
the protocols of the test.
[0192] The following examples below illustrate exemplary
formulations as well as preferred embodiments of the invention. It
is to be understood that these examples are provided by way of
illustration only and that further useful formulations falling
within the scope of the present invention and the claims may be
readily produced by one of ordinary skill in the art without
deviating from the scope and spirit of the invention.
EXAMPLES
[0193] A number of treatment compositions as well as a number of
comparative compositions were produced and are described on the
following Tables. In these identified compositions, the
constituents were used "as supplied" from their respective
suppliers and may constitute less than 100% wt. "actives", or may
have been supplied as constituting 100% wt. "active" of the named
compound, as indicated below. The identified "as supplied"
constituent was used, and the "% wt." of each such constituent is
indicated on the tables. Treatment compositions which are
considered to fall within the scope of the present invention are
identified by a digit prepended with the letter "E" which indicates
this to be an "example" composition, while compositions provided
only for the purposes of comparison are identified by a digit
prepended with the letter "C", which indicates this to be a
comparative composition and falling outside of the scope of the
present invention. In certain of the treatment compositions, one or
more constituents, e.g, a pH adjusting agent, or deionized water
was added in "quantum sufficient" "q.s." in order to provide a
desired pH or to provide a sufficient mass in order to provide 100%
wt. of each composition. The example compositions disclosed
hereinafter include certain presently preferred embodiments of the
invention. The comparative compositions are presented on Table C,
while treatment compositions of the invention are identified on one
or more of the further tables, e.g, Table 1.
[0194] The compositions disclosed on the following tables were
produced by simple mixing, under stirring, of the identified
constituents, generally in accordance with the following protocol.
To a suitably sized laboratory beaker outfitted with a mechanical
stirrer or a magnetic stirrer, was first supplied a major
proportion of the deionized water. All of the constituents, as well
as the laboratory beaker were at room temperature (approx.
20.degree. C.) and as the beaker was open, mixing was at normal
atmospheric pressure. Thereafter under stirring conditions (approx.
300 rpm) was added the source of zinc ions, and mixing continued
until this material was dissolved. While stirring continued was
next added the quaternary ammonium compound(s), and next any pH
adjusting agents when such were included. Stirring continued for a
further 15-30 minutes to ensure a homogenous mixture, to which was
next added the alcohol constituent. Subsequently were added any
remaining constituents including any further quantity of pH
adjusting constituents (if present) in order to establish the
desired pH of the surface treatment composition. Constituents
identified as being added "q.s." were added in order to adjust the
pH of the formed composition or to bring the weight of the formed
composition to 100% wt. Stirring continued for a further 1-15
minutes to ensure the formation of a homogenous mixture, after
which the surface treatment composition was withdrawn from the
beaker and used or tested.
[0195] These compositions as identified below were formed using the
constituents identified on the following Table A which identifies
the specific constituents used.
[0196] Where not indicated as already incorporating an amount of a
suitable propellant, it is to be understood that to any of the
example compositions described on the following tables may be added
a suitable amount of a propellant. Typically an additional 1-10%
wt. of a suitable propellant may be added to the 100% wt. of an
example composition which can then be placed into a sealed
container or vessel, e.g., an aerosol canister provided with a
dispensing valve, such as a common nozzle through which the
pressurized treatment composition may be dispensed.
TABLE-US-00003 TABLE A Constituents zinc acetate zinc acetate,
powder, 100% wt. active zinc sulfate.cndot.7H2O zinc
sulfate.cndot.7H.sub.2O, powder, 100% wt. active zinc chloride zinc
chloride, powder, 100% wt. active ethanol (100%) ethanol, technical
grade, 100% wt. actives BTC-65 (50%) C12-C16 alkyl dimethyl benzyl
ammonium chloride provided in an aqueous alcoholic carrier (50% wt.
actives) (ex. Stepan) Onyxide 3300 (33%) quaternary ammonium
complex with saccharinate counterion, (33% wt. actives, balance
ethanol) (ex. Stepan Co.) Neodol 91-6 nonionic surfactant, C9-C11
linear primary alcohol ethoxylate, avg. 6 mols. ethoxylation, 100%
wt. actives (ex. Shell Chemical) Crodasol WS nonionic surfactant
based on alcohol alkoxylates, comprising polyethylene glycol
monooctyl ether:
CH.sub.3(CH.sub.2).sub.6CH.sub.2(OCH.sub.2CH.sub.2).sub.nOH where n
= 2-8 (100% wt. active) ex. Croda monoethanolamine
monoethanolamine, technical grade (100% wt. active) (ex. Huntsman)
triethanolamine triethanolamine, technical grade (100% wt. active)
(ex. Dow Chemical Company) sodium citrate.cndot.2H2O sodium
citrate.cndot.2H.sub.2O, powder, 100% actives citric acid (anhy.)
Anhydrous citric acid, laboratory grade, powder, 100% wt. actives)
Citrosol 502(50%) aqueous solution of citric acid (50% wt. active)
(ex. ADM) NH4OH (29.86%) aqueous solution of NH4OH (29.6% wt.
active) NaOH (10%) aqueous solution of sodium hydroxide, 10% wt.
active Trilon BX aqueous solution of tetrasodium ethylene diamine
tetraacetic acid 38.9% wt. actives) (ex. BASF) Monacor BE borate
ester blend, used as supplied (ex. Croda) sodium benzoate sodium
benzoate, powder, 100% wt. active fragrance fragrance, proprietary
composition of its supplier di H2O deionized water, (100% wt.
active) propellant 21% wt. n-propane and 79% wt. n-butane, supplied
as "AB46"
[0197] It is to be noted that the amount of the "ethanol (100%)"
listed in the following tables indicates the amount of `neat`
ethanol added as an individual constituent, but that minor
additional amounts of ethanol may also be present in the
compositions due to the inclusion of one or more of the foregoing
constituents which were supplied with a carrier which comprised
ethanol, (e.g. Oxyxide 3300, which comprised 66% wt. ethanol), thus
in such compositions the total amount of ethanol present is
slightly higher than the amount of `neat` ethanol provided as an
individual constituent.
[0198] Further, wherein a specific composition was evaluated for
microbicidal efficacy against a challenge microorganism according
to one or more of the test protocols identified above, the results
of these tests are reported as well. Wherein multiple challenge
microorganisms were evaluated in any one test, multiple results are
reported.
[0199] In the following tables, the tested microorganisms and their
identity as reported on the tables are as identified on Table
B:
TABLE-US-00004 TABLE B Microorganisms Identifier Type/Challenge
microorganism "PV1" Virus/Poliovirus type 1 Sabin, ex. supplied by
U.S. Centers for Disease Control and Prevention (CDC) "IV-A"
Virus/Influenza A virus, A/California/04/2009 (H1N1), supplied as
Biodefence and Emerging Infections Research Resources Repository
(BEI Resource) NR-13658 "HAdV" Virus/Human adenovirus type 5,
supplied as ATCC VR-5 "FCV" Virus/Feline calicivirus strain F-9,
supplied as ATCC VR-782 "HSV" Virus/Herpes simplex type 1, supplied
as ATCC VR-1493 "S. aureus" Bacteria/Staphylococcus aureus,
supplied as ATCC or "Sa" 6538 "E. coli" Bacteria/Escherichia coli,
supplied as ATCC 10536 or "Ec" "P. aeruginosa" Bacteria/Pseudomonas
aeruginosa ("P. aeruginosa") or "Pa" (supplied as ATCC 15442); "E.
hirae", Bacteria/Enterococcus hirae, supplied as ATCC 10541 or "Eh"
"A. niger" Fungus/Aspergillis niger, supplied as ATCC 16404 "T.
ment" Fungus/Trichophyton metagropytes, supplied as ATCC 9533 "M.
bovis" Pathogen/Mycobacterium tuberculosis var. bovis
[0200] In the following tables, Tables C and CP describes various
"comparative" examples, (which comparative examples may be
identified by the prepended letter "C") while subsequent Table 1
and 1P describes various examples of compositions according to the
invention, (which examples may also be identified by the prepended
letter "E") as well as the observed physical properties and the
results of microbidical testing according to one or more of the
following standardized test protocols:
A) ASTM E1052 Standard Test Method for Efficacy of Antimicrobial
Agents against Viruses in Suspension, (for a 5 minute contact time,
unless specified otherwise) identified on Table 1 as "ASTM E 1052
(log 10 reduction)"; B) ASTM E1053 Standard Test Method to Assess
Virucidal Activity of Chemicals Intended for Disinfection of
Inanimate, Nonporous Environmental Surfaces, (for a 10 minute
contact time, unless specified otherwise) identified on Table 1 as
"ASTM 1053 (log 10 reduction)", C) European Standard Surface Test,
EN13697, identified on Table 1 as "EN 13697 (log 10 reduction)", D)
AOAC Germicidal Spray Products as Disinfectant Test Method, AOAC
Index, 17th Ed. (2000), identified on Table 1 as "AOAC Germicidal
Spray". In this test, a result of "0/60" or "1/60" is equivalent to
a result of "pass" according to that test's protocols. Results of
"2" excess thereof for "/60" tested plates/samples are considered
as being equivalent to a "fail" according to that test's protocols.
E) The European Standard Surface Test, EN13697 protocol (for a 15
minute contact time, unless specified otherwise) identified on the
following tables as "EN 13697 T. ment" was used for testing
antifungal efficacy against Trichophyton mentagrophytes or
Aspergillis niger; the results reported on the tables as the log 10
reduction of the identified fungus. A) ASTM E1052 Standard Test
Method for Efficacy of Antimicrobial Agents against Viruses in
Suspension, (for a 5 minute contact time, unless specified
otherwise) identified on the following tables as "ASTM E 1052 (log
10 reduction)"; B) ASTM E1053 Standard Test Method to Assess
Virucidal Activity of Chemicals Intended for Disinfection of
Inanimate, Nonporous Environmental Surfaces, (for a 5 minute
contact time, unless specified otherwise) identified on the
following tables as "ASTM 1053 (log 10 reduction)", C) European
Standard Surface Test, EN13697, (for a 5 minute contact time,
unless specified otherwise) identified on the following tables as
"EN 13697 (log 10 reduction)", D) AOAC Germicidal Spray Products as
Disinfectant Test Method, AOAC Index, 17th Ed. (2000), (for a 5
minute contact time, unless specified otherwise) identified on the
following tables as "AOAC Germicidal Spray". In this test, a result
of "0/60" or "1/60" is equivalent to a result of "pass" according
to that test's protocols. Results of "2" excess thereof for "/60"
tested plates/samples are considered as being equivalent to a
"fail" according to that test's protocols. E) The European Standard
Surface Test, EN13697 protocol (for a 15 minute contact time,
unless specified otherwise) identified on the following tables as
"EN 13697 T. ment" was used for testing antifungal efficacy against
Trichophyton mentagrophytes or Aspergillis niger; the results
reported on the tables as the log 10 reduction of the identified
fungus.
[0201] Table C and Table 1 respectively describe compositions to
which a propellant, such as AB46, may be added in a measured
amount.
[0202] It is noted that each tested composition was not necessarily
tested according to all of the foregoing protocols as test results
of microbicidal efficacy against Poliovirus type 1 Sabin supports
the presumption of efficacy against easier to control or eradicate
microorganisms.
[0203] The inventive compositions disclosed on Table 1 were
formulated and tested without the addition of any propellant. The
compositions of Table C were comparative examples which were
formulated and tested without the addition of any propellant. The
inventive compositions disclosed on Tables 1P and 1P-A which
included a propellant were pressurized in an aerosol container, and
after being dispensed into a clean collection vessel (which
permitted for the propellant to flash off) the remaining dispensed
composition retained in the collection vessel was used in the
indicated microbicidal testing. The compositions of Table CP
disclosed pressurized, comparative example compositions which were
prepared and tested as disclosed with reference to the inventive
compositions disclosed on Tables 1P and 1P-A.
[0204] In the following tables the amount of the zinc ions present
are also indicated in parts per million (ppm) and this number is
based on the empirical calculation of the available metal ions
present in the indicated composition and 100% disassociation of the
zinc ion from the zinc ion source is presumed for this empirical
calculation.
[0205] In the following tables the appearance of each of the
compositions of Tables 1, C, 1P, 1P-A, CP and 2 were essentially
colorless and transparent.
[0206] All of the compositions indicated in the following tables
were liquids which were readily pourable and pumpable and had a
"water-thin" viscosity prior to being pressurized (where
applicable), as well as after being dispensed from an aerosol
canister (where applicable).
TABLE-US-00005 TABLE C (Comparative Compositions) C1 C2 C3 C4 C5 C6
C7 zinc acetate -- -- -- 0.08 -- -- -- zinc sulfate.cndot.7H2O --
-- 0.08 -- 0.08 -- -- zinc chloride -- -- -- -- -- -- -- ethanol
(100%) 35.0 45.0 -- -- -- -- -- BTC-65 (50%) -- -- -- -- -- 0.20 --
Onyxide 3300 (33%) -- -- -- -- -- -- 0.30 Neodol 91-6 -- -- 0.10 --
-- -- -- monoethanolamine -- -- 0.06 -- 0.07 -- -- triethanolamine
0.025 0.005 0.10 0.07 0.10 -- 0.005 sodium citrate.cndot.2H2O -- --
0.10 0.20 0.10 -- -- Citrasol 502 (50%) -- -- 0.05 -- 0.08 -- --
NH4OH (29.86%) -- -- -- 0.05 -- -- -- NaOH (10%) -- -- -- -- -- --
-- Triton BX -- -- -- -- -- -- -- Monacor BE -- -- -- -- -- -- --
Silwet Hydrostable -- -- -- -- -- -- -- fragrance -- -- -- -- -- --
-- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. pH 9.23 8.70 9.03
9.33 9.18 8.58 9.16 zinc ions (ppm) 0 0 182 285 182 0 0 ASTM E 1052
(log10 PV1 = 1.83 PV1 = 3.17 PV1 = 2.83 PV1 = 2.17 PV1 = 2.83 PV1 =
1.83 PV1 = 2.50 reduction) FCV .gtoreq. 6.00 IVA .gtoreq. 5.00 HSV
.gtoreq. 6.00 HAdV = 1.50 ASTM 1053 (log10 -- -- -- -- -- -- --
reduction) AOAC Germicidal Sa = 60/60 -- -- -- -- Sa = 1/60 --
Spray Pa = 0/60 Pa = 1/60 EN 13697 (log10 Sa = 4.60 -- -- -- -- Sa
= 4.47 -- reduction) Ec = 4.19 Ec = 4.28 Pa .gtoreq. 4.52 Pa
.gtoreq. 4.52 Eh .gtoreq. 6.68 Eh = 3.83 EN 13697 T. ment A. niger
0.93 -- -- -- -- A. niger 0.85 -- (log10 reduction) T. ment 4.84 --
-- -- -- T. ment 2.73 -- C8 C9 C10 C11 C12 C13 C14 C15 zinc acetate
0.08 0.08 -- -- -- -- -- -- zinc sulfate.cndot.7H2O -- -- 0.08 --
-- -- -- -- zinc chloride -- -- -- -- -- -- -- -- ethanol (100%) --
-- -- 20.0 35.0 45.0 45.0 45.0 BTC-65 (50%) 0.20 0.20 -- -- 0.20
0.20 -- 0.20 Onyxide 3300 (33%) -- -- 0.30 0.30 -- -- 0.303 --
Neodol 91-6 0.10 0.10 -- 0.10 0.10 0.10 -- 0.10 monoethanolamine
0.05 -- 0.06 0.05 -- -- -- -- triethanolamine -- 0.27 0.10 0.10
0.016 0.01 0.005 -- sodium citrate.cndot.2H2O -- -- 0.10 0.08 -- --
-- 0.04 Citrasol 502 (50%) 0.012 -- 0.06 0.07 -- -- -- -- NH4OH
(29.86%) -- 0.12 -- -- -- -- -- -- NaOH (10%) -- -- -- -- -- -- --
-- Triton BX -- -- -- -- -- -- -- -- Monacor BE -- -- -- -- -- --
-- -- Silwet Hydrostable -- -- -- -- -- -- -- -- fragrance -- -- --
-- -- -- -- -- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. q.s.
pH 8.15 8.66 9.13 9.05 8.89 7.99 8.03 8.78 zinc ions (ppm) 285 285
182 0 0 0 0 0 ASTM E 1052 (log10 PV1 = 2.17 PV1 = 1.83 PV1 = 2.67
PV1 = 2.83 PV1 = 2.17 PV1 = 2.00 PV1 = 2.00 PV1 = 3.00 reduction)
ASTM 1053 (log10 -- -- -- -- -- -- -- -- reduction) AOAC Germicidal
-- -- -- -- -- -- -- -- Spray EN 13697 (log10 Sa = 3.90 Sa = 5.01
-- -- Sa .gtoreq. 6.35 -- -- -- reduction) Ec .gtoreq. 6.06 Ec
.gtoreq. 6.06 Ec .gtoreq. 5.35 Pa .gtoreq. 5.41 Pa .gtoreq. 5.41 Pa
.gtoreq. 3.85 Eh .gtoreq. 6.66 Eh .gtoreq. 6.66 EN 13697 T. ment
=1.40 1.09 -- -- A. niger = -- -- -- (log10 reduction) 1.86 C16 C17
C18 zinc acetate -- -- -- zinc sulfate.cndot.7H2O -- -- -- zinc
chloride -- -- -- ethanol (100%) 45.0 55.0 70.0 BTC-65 (50%) --
0.20 -- Onyxide 3300 (33%) 0.303 -- 0.30 Neodol 91-6 -- 0.10 0.10
monoethanolamine -- 0.06 0.05 triethanolamine 0.03 0.10 0.10 sodium
citrate.cndot.2H2O -- 0.10 0.08 Citrasol 502 (50%) -- 0.06 0.07
NH4OH (29.86%) -- -- -- NaOH (10%) -- -- -- Triton BX -- -- --
Monacor BE -- -- -- Silwet Hydrostable -- -- -- fragrance -- -- --
di H.sub.2O q.s. q.s. q.s. pH 8.9 9.03 9.14 zinc ions (ppm) 0 0 0
ASTM E 1052 (log10 PV1 = 2.27 PV1 = 4.00 PV1 = 5.83 reduction) ASTM
1053 (log10 -- -- -- reduction) AOAC Germicidal -- -- -- Spray EN
13697 (log10 Sa .gtoreq. 6.75 -- -- reduction) Ec .gtoreq. 6.06 Pa
.gtoreq. 5.41 Eh .gtoreq. 6.66 EN 13697 T. ment .gtoreq.4.61 -- --
(log10 reduction)
TABLE-US-00006 TABLE 1 (Example Compositions) E1 E2 E3 E4 E5 E6 E7
zinc acetate -- -- 0.08 0.08 0.08 -- -- zinc sulfate.cndot.7H2O
0.10 0.12 -- -- -- 0.12 0.12 zinc chloride -- -- -- -- -- -- --
ethanol (100%) 20.0 35.0 35.0 35.0 35.0 38.0 38.0 BTC-65 (50%) --
-- 0.20 0.20 -- -- -- Onyxide 3300 (33%) 0.30 0.303 -- -- -- 0.303
0.303 Neodol 91-6 0.10 0.10 0.10 0.10 0.10 0.10 0.10
monoethanolamine 0.20 -- -- 0.74 -- -- -- triethanolamine 0.10 0.15
0.07 -- 0.07 0.15 -- sodium citrate.cndot.2H2O 0.08 0.20 0.20 --
0.20 -- 0.20 Citrasol 502 (50%) 0.32 -- -- -- -- 0.09 -- NH4OH
(29.86%) -- 0.17 0.06 -- 0.07 0.13 0.08 NaOH (10%) -- -- -- -- --
-- -- Triton BX -- -- -- -- -- -- -- Monacor BE -- -- -- -- -- --
-- Silwet Hydrostable -- -- -- -- -- -- -- fragrance -- -- -- -- --
-- -- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. pH 9.03 9.50
9.05 10.76 9.11 9.28 9.46 zinc ions (ppm) 227 272.8 285 285 285 272
272 ASTM E 1052 (log10 PV1 = 2.50 PV1 = 3.30 PV1 = 2.17 PV1
.gtoreq. 5.00 PV1 = 2.00 PV1 = 2.33 PV1 = 3.00 reduction) ASTM 1053
(log10 -- -- -- -- -- -- -- reduction) AOAC Germicidal -- -- -- --
-- -- -- Spray EN 13697 (log10 -- -- Sa .gtoreq. 6.75 -- Sa
.gtoreq. 6.75 -- -- reduction) Ec .gtoreq. 6.06 Ec .gtoreq. 6.06 Pa
.gtoreq. 5.41 Pa .gtoreq. 5.41 Eh .gtoreq. 6.66 Eh .gtoreq. 6.66 EN
13697 T. ment -- -- .gtoreq.4.61 -- .gtoreq.4.61 -- -- (log10
reduction) E8 E9 E10 E11 E12 E13 E14 zinc acetate -- -- -- -- -- --
-- zinc sulfate.cndot.7H2O 0.08 0.08 0.08 0.08 0.08 0.08 0.08 zinc
chloride -- -- -- -- -- -- -- ethanol (100%) 40.0 40.0 40.0 40.0
40.0 40.0 40.0 BTC-65 (50%) -- -- -- -- -- -- -- Onyxide 3300 (33%)
-- -- 0.300 0.30 0.15 0.15 0.30 Neodol 91-6 -- 0.10 0.10 0.10 0.10
0.10 0.10 monoethanolamine 0.06 0.07 0.008 0.015 0.06 0.80 0.70
triethanolamine 0.10 0.10 0.10 0.10 0.10 0.10 0.10 sodium
citrate.cndot.2H2O 0.10 0.10 0.20 0.20 0.10 0.10 0.20 Citrasol 502
(50%) 0.05 0.05 0.015 -- 0.05 0.05 -- NH4OH (29.86%) -- -- -- -- --
0.08 0.15 NaOH (10%) -- -- -- -- -- -- -- Triton BX -- -- -- -- --
-- -- Monacor BE -- -- -- -- -- -- -- Silwet Hydrostable -- -- --
-- -- -- -- fragrance -- -- -- -- -- -- -- di H.sub.2O q.s. q.s.
q.s. q.s. q.s. q.s. q.s. pH 9.00 9.13 8.52 9.13 9.05 10.73 11.0
zinc ions (ppm) 182 182 182 182 182 182 182 ASTM E 1052 (log10 PV1
= 2.56 PV1 = 2.73 PV1 = 2.50 PV1 = 2.83 PV1 = 3.00 PV1 .gtoreq.
6.00 PV1 .gtoreq. 5.00 reduction) ASTM 1053 (log10 -- -- -- -- --
-- -- reduction) AOAC Germicidal -- -- -- -- -- -- -- Spray EN
13697 (log10 -- -- Sa .gtoreq. 6.75 -- -- -- -- reduction) Ec
.gtoreq. 6.06 Pa .gtoreq. 5.41 Eh .gtoreq. 6.66 EN 13697 T. ment --
-- .gtoreq.4.61 -- -- -- -- (log10 reduction) E15 E16 E17 E18 E19
E20 E21 E22 zinc citrate.cndot.3H2O 0.10 0.10 -- -- -- -- -- 0.15
zinc sulfate.cndot.7H2O -- -- 0.115 0.115 0.115 0.12 0.12 -- zinc
chloride -- -- -- -- -- -- -- -- ethanol (100%) 40.0 40.0 40.0 40.0
40.0 40.0 43.0 40.0 BTC-65 (50%) 0.40 0.40 -- -- -- -- -- 0.20
Onyxide 3300 (33%) -- -- 0.303 0.91 0.30 0.30 0.303 -- Neodol 91-6
0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 monoethanolamine -- -- --
0.20 0.41 0.04 -- -- triethanolamine 0.34 0.38 0.72 0.38 0.38 0.10
0.15 0.38 sodium citrate.cndot.2H2O -- -- -- -- -- 0.20 -- --
Citrasol 502 (50%) 0.07 0.07 0.15 0.19 0.19 -- 0.02 0.08 NH4OH
(29.86%) -- 0.15 -- 0.08 0.07 -- 0.12 -- NaOH (10%) -- 0.45 -- 0.25
0.42 -- -- -- Triton BX -- -- -- -- -- -- -- -- Monacor BE -- -- --
-- -- -- -- -- Silwet Hydrostable -- -- -- -- -- -- -- -- fragrance
-- -- -- -- -- -- -- -- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s.
q.s. q.s. pH 7.92 11.02 7.92 9.72 10.35 9.10 9.46 7.89 zinc ions
(ppm) 310 310 261 261 261 272.8 272.8 465 ASTM E 1052 (log10 PV1 =
2.00 PV1 .gtoreq. 5.00 PV1 = 2.50 PV1 .gtoreq. 4.73 PV1 .gtoreq.
5.00 PV1 = 2.17 PV1 = 3.92 PV1 = 2.00 reduction) ASTM 1053 (log10
-- -- -- -- -- -- -- -- reduction) AOAC Germicidal -- -- -- -- --
-- -- -- Spray EN 13697 (log10 -- -- -- -- -- -- -- -- reduction)
EN 13697 T. ment -- -- -- -- -- -- -- -- (log10 reduction) E23 E24
E25 E26 E27 E28 E29 E30 zinc acetate -- 0.08 0.08 0.08 -- -- 0.08
0.08 zinc sulfate.cndot.7H2O 0.12 -- -- -- -- -- -- -- zinc
chloride -- -- -- -- 0.055 0.055 -- -- ethanol (100%) 43.0 45.0
45.0 45.0 45.0 45.0 45.0 45.0 BTC-65 (50%) -- -- -- -- -- -- -- --
Onyxide 3300 (33%) 0.303 -- -- 0.303 0.303 0.303 0.303 0.303 Neodol
91-6 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 monoethanolamine -- --
0.02 -- -- -- -- -- triethanolamine 0.15 0.12 0.27 0.22 0.38 0.38
0.22 0.295 sodium citrate.cndot.2H2O -- 0.20 -- -- -- -- -- --
Citrasol 502 (50%) 0.02 -- 0.14 0.27 0.15 0.12 0.145 0.13 NH4OH
(29.86%) 0.12 0.03 0.12 -- 0.30 0.30 0.15 0.26 NaOH (10%) -- -- --
-- -- -- -- -- Triton BX -- -- -- -- -- -- -- -- Monacor BE -- --
-- -- -- 0.10 0.06 -- Silwet Hydrostable -- -- -- -- -- -- -- --
fragrance -- -- -- -- -- -- -- -- di H.sub.2O q.s. q.s. q.s. q.s.
q.s. q.s. q.s. q.s. pH 9.46 8.05 8.74 6.07 8.34 9.27 9.25 9.45 zinc
ions (ppm) 272.8 285 285 285 263.8 263.8 285 285 ASTM E 1052 (log10
PV1 = 3.92 PV1 = 2.50 PV1 .gtoreq. 5.00 PV1 = 1.25 PV1 = 2.27 PV1
.gtoreq. 4.73 PV1 .gtoreq. 5.00 PV1 = 4.50 reduction) ASTM 1053
(log10 -- -- -- -- -- -- -- -- reduction) AOAC Germicidal -- -- --
-- -- -- Sa = 0/30 -- Spray Pa = 0/30 EN 13697 (log10 -- -- Sa
.gtoreq. 6.75 -- -- -- Sa .gtoreq. 6.75 -- reduction) Ec .gtoreq.
6.06 Ec .gtoreq. 6.06 Pa .gtoreq. 5.41 Pa .gtoreq. 5.41 Eh .gtoreq.
6.66 Eh .gtoreq. 6.66 EN 13697 T. ment -- -- .gtoreq.4.61 -- -- --
.gtoreq.4.61 -- (log10 reduction) E31 E32 E33 E34 E35 E36 E37 E38
zinc acetate 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 zinc
sulfate.cndot.7H2O -- -- -- -- -- -- -- -- zinc chloride -- -- --
-- -- -- -- -- ethanol (100%) 45.0 45.0 45.0 45.0 45.0 45.0 45.0
45.0 BTC-65 (50%) -- 0.20 0.20 0.20 -- -- -- 0.20 Onyxide 3300
(33%) -- -- -- -- -- 0.303 0.303 -- Neodol 91-6 0.10 0.10 0.10 0.10
0.10 0.10 0.10 0.10 monoethanolamine -- -- -- -- 0.02 0.11 0.11
0.75 triethanolamine 0.12 0.27 0.22 0.335 0.27 0.22 0.22 0.07
sodium citrate.cndot.2H2O 0.20 -- -- -- -- -- -- 0.20 Citrasol 502
(50%) -- 0.14 0.21 -- 0.14 0.155 0.14 -- NH4OH (29.86%) 0.03 0.08
0.14 -- 0.12 0.124 0.124 0.17 NaOH (10%) -- -- -- -- -- -- -- --
Triton BX -- -- -- 0.26 -- -- -- -- Monacor BE -- -- -- -- -- 0.08
-- -- Silwet Hydrostable -- -- -- -- -- -- -- -- fragrance -- -- --
-- -- -- -- -- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. q.s.
pH 8.05 8.09 8.56 8.6 8.74 9.63 9.63 10.78 zinc ions (ppm) 285 285
285 285 285 285 285 285 ASTM E 1052 (log10 PV1 = 2.50 PV1 = 3.50
PV1 = 3.83 PV1 .gtoreq. 5.50 PV1 .gtoreq. 5.00 PV1 .gtoreq. 4.50
PV1 .gtoreq. 4.50 PV1 .gtoreq. 5.00 reduction) ASTM 1053 (log10 --
-- -- -- -- -- -- -- reduction) AOAC Germicidal -- -- -- -- -- --
-- -- Spray EN 13697 (log10 -- -- Sa .gtoreq. 6.75 -- Sa .gtoreq.
6.75 -- -- -- reduction) Ec = 4.98 Ec .gtoreq. 6.06 Pa .gtoreq.
5.41 Pa .gtoreq. 5.41 Eh .gtoreq. 6.66 Eh .gtoreq. 6.66 EN 13697 T.
ment -- -- .gtoreq.4.61 -- .gtoreq.4.61 -- -- -- (log10 reduction)
E39 E40 E41 E42 E43 zinc acetate 0.08 -- -- -- -- zinc
sulfate.cndot.7H2O -- 0.10 0.10 0.115 0.115 zinc chloride -- -- --
-- -- ethanol (100%) 45.0 55.0 70.0 45.0 45.0 BTC-65 (50%) -- 0.20
-- -- -- Onyxide 3300 (33%) 0.303 -- 0.30 0.303 0.30 Neodol 91-6
0.10 0.10 0.10 0.10 0.10 monoethanolamine -- 0.075 0.15 -- 0.20
triethanolamine 0.27 0.10 0.10 0.35 0.40 sodium citrate.cndot.2H2O
-- 0.10 0.08 -- -- Citrasol 502 (50%) 0.14 0.06 0.20 0.14 0.19
NH4OH (29.86%) -- -- -- 0.09 0.13 NaOH (10%) -- -- -- -- -- Triton
BX -- -- -- -- -- MEA-MIPA borate -- -- -- -- -- Monacor BE -- --
-- -- -- Silwet Hydrostable -- -- -- -- -- fragrance -- -- -- -- --
di H.sub.2O q.s. q.s. q.s. q.s. q.s. pH 7.08 9.03 9.2 8.14 9.5 zinc
ions (ppm) 285 227.4 227.4 261 261 ASTM E 1052 (log10 PV1 .gtoreq.
3.17 PV1 = 4.17 PV1 .gtoreq. 6.00 PV1 = 1.50 PV1 .gtoreq. 4.73
reduction) ASTM 1053 (log10 -- -- -- -- -- reduction) AOAC
Germicidal -- -- -- -- -- Spray EN 13697 (log10 -- -- -- -- --
reduction) EN 13697 T. ment -- -- -- -- -- (log10 reduction) E44
E45 E46 E47 E48 E49 E50 zinc acetate -- -- -- -- -- -- -- zinc
sulfate.cndot.7H.sub.2O 0.13 0.13 0.13 0.13 0.13 0.13 0.13 zinc
chloride -- -- -- -- -- -- -- ethanol (100%) 43.0 43.0 43.0 43.0
43.0 43.0 43.0 BTC-65 (50%) -- -- -- -- -- -- -- Onyxide 3300 (33%)
0.33 0.33 0.33 0.33 0.33 0.33 0.33 Neodol 91-6 0.10 0.10 0.10 0.10
0.10 0.10 0.10 monoethanolamine 1.04 1.04 1.04 1.04 1.04 1.04 1.04
triethanolamine 0.10 0.10 0.10 0.10 0.10 0.10 0.10 sodium citrate
-- -- -- -- -- -- -- Citrasol 502 (50%) 0.12 0.12 0.12 0.12 0.12
0.12 0.12 NH4OH (29.86%) 0.10 0.10 0.10 0.10 0.10 0.10 0.10 NaOH
(10%) -- -- -- -- -- -- -- Triton BX -- -- -- -- -- -- -- Monacor
BE 0.065 0.10 0.15 0.25 -- -- -- sodium benzoate -- -- -- -- 0.06
0.10 0.15 Silwet Hydrostable -- -- -- -- -- -- -- fragrance -- --
-- -- -- -- -- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. pH
10.55 10.54 10.52 10.45 10.58 10.55 10.51 zinc ions (ppm) -- -- --
-- -- -- -- ASTM E 1052 (log10 PV1 .gtoreq. 7.00 PV1 .gtoreq. 7.00
PV1 .gtoreq. 7.00 PV1 .gtoreq. 7.00 PV1 .gtoreq. 7.00 PV1 .gtoreq.
7.00 PV1 .gtoreq. 7.00 reduction) ASTM 1053 (log10 -- -- -- -- --
-- -- reduction) AOAC Germicidal -- -- -- -- -- -- -- Spray EN
13697 (log10 -- -- -- -- -- -- -- reduction)
EN 13697 T. ment -- -- -- -- -- -- -- (log10 reduction)
[0207] Any of the compositions described on Table 1 may also be
formed into a pressurized surface treatment composition of the
invention by the addition of a further, suitable amount of a
propellant thereto. Particularly preferred forms of the pressurized
surface treatment compositions are ones in which between about
80-99.5 parts by weight of an inventive treatment composition
indicated on Table 1, and identified with the prepended letter "E"
(e.g. "E1", "E2" etc.) are combined with 0.5-20 parts by weight of
suitable propellant or propellant composition, and the resultant
blend or mixture is supplied to a sealable dispensing container,
such as an aerosol canister which includes a valve which permits
for the sprayable, pressurized treatment compositions to exit the
container. Typically such a sealed dispensing container includes in
addition to the valve, a valve stem upon which is mounted a
conventional spray nozzle adapted to be compressed or tilted by a
consumer in order to release the pressurized composition as an
aerosol. For example, a quantity of a composition according to the
invention as described on Table 1 is supplied to a suitable aerosol
canister, to which is added, e.g., 7% vol. of a propellant
composition and the aerosol canister is sealed. The sprayable
treatment composition may be dispensed from the aerosol canister in
a conventional manner and used to treat an inanimate surface.
[0208] As can be seen from the foregoing results, the compositions
of the invention exhibited excellent microbicidal efficacy as
demonstrated by the various test results, even wherein reduced
amounts of ethanol was present as a constituent. In the foregoing
compositions of Table C and Table 1, a propellant constituent was
omitted, however may have been additionally added, e.g, in any
additional amount of about 0.5-20% wt., based on the compositions
of Table 1, in order to produce compositions according to the
invention. The foregoing tables demonstrate the antimicrobial
efficacy of the indicated compositions, it being understood that
had a propellant been added and the composition pressurized in an
aerosol canister, the dispensed and recovered composition would be
substantially as described as disclosed in Table C or Table 1 after
the propellant was flashed off from the dispensed composition.
[0209] The following table CP provides several comparative
pressurized compositions, while tables 1P and 1P-A demonstrate
pressurized compositions of the invention.
TABLE-US-00007 TABLE CP (Pressurized, Comparative Examples) C19 C20
C21 C22 zinc acetate -- -- -- -- zinc sulfate.cndot.7H2O -- -- 0.13
-- zinc chloride -- -- -- -- ethanol (100%) 37.20 39.06 -- 44.22
BTC-65 (50%) -- -- -- -- Onyxide 3300 (33%) 0.30 0.30 -- 0.313
Crodasol WS -- -- 0.14 0.14 Neodol 91-6 0.093 0.093 -- --
monoethanolamine 0.223 0.707 0.97 0.97 triethanolamine 0.093 0.093
0.093 0.093 sodium citrate.cndot.2H.sub.2O -- -- -- -- Citric acid
(anhy.) -- -- 0.056 0.056 Citrasol 502 (50%) 0.11 0.11 -- --
NH4(OH) (29.86%) 0.093 0.093 0.093 0.093 NaOH (10%) -- -- -- --
Triton BX -- -- -- -- Monacor BE -- -- 0.14 0.14 Silwet Hydrostable
-- -- -- -- fragrance -- -- -- 0.225 propellant 7.0 7.0 7.0 7.0 di
H.sub.2O q.s. q.s. q.s. q.s. pH 10.04 10.47 10.60 10.54 zinc ions
(ppm) 0 0 295.1 0 can type W W S S ASTM E 1052 (log10 -- -- -- --
reduction) ASTM 1053 (log10 PV1 = 3.00 PV1 = 3.58 -- -- reduction)
AOAC Germicidal -- -- Sa = 30/30 Sa = 0/30 Spray Pa = 5/30 Pa =
0/60 EN 13697 (log10 -- -- -- -- reduction) EN 13697 T. ment -- --
-- -- (log10 reduction) C23 C24 C25 C26 C27 C28 zinc acetate -- --
-- -- -- -- zinc sulfate.cndot.7H.sub.2O -- -- -- -- -- -- zinc
chloride -- -- -- -- -- -- ethanol (100%) 49.77 49.77 49.77 49.77
49.77 49.77 BTC-65 (50%) -- -- -- -- -- -- Onyxide 3300 (33%) 0.337
0.337 0.337 0.337 0.337 0.337 Neodol 91-6 -- -- -- -- -- --
monoethanolamine 0.02 -- -- 0.13 0.65 2.51 triethanolamine 0.1 0.1
0.1 0.1 0.1 0.1 sodium citrate.cndot.2H.sub.2O -- -- -- -- -- --
Citrasol 502 (50%) 0.35 0.26 0.19 0.12 0.12 0.12 NH4(OH) (29.86%)
0.1 0.1 0.1 0.1 0.1 0.1 NaOH (10%) -- -- -- -- -- -- Trilon BX --
-- -- -- -- -- Monacor BE 0.15 0.15 0.15 0.15 0.15 0.15 Crodasol WS
0.15 0.15 0.15 0.15 0.15 0.15 fragrance -- -- -- -- -- -- di
H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. pH 9.0 9.25 9.53 10.0 10.5
10.99 zinc ions (ppm) 0 0 0 0 0 0 can type S S S S S S ASTM 1053
(log10 -- -- -- PV1 = 0.73 PV1 = 0.90 PV1 = 090 reduction), 30
seconds contact time ASTM 1053 (log10 -- -- -- -- -- PV1 = 2.23
reduction), 5 minutes contact time To each of comparative examples
C23 through C28 was added an additional amount of 10% wt. of AB46
(based on the total weight of the remaining constituents, which
totaled 100% wt.) as the propellant constituent, and the reported
microbicidal testing was performed utilizing the recovered liquid
collected immediately after a quantity of the pressurized
composition was dispensed from an aerosol canister
TABLE-US-00008 TABLE 1P (Pressurized, Example Compositions) E51 E52
E53 E54 E55 E56 E57 zinc acetate -- -- -- -- -- -- -- zinc
sulfate.cndot.7H.sub.2O 0.12 0.116 0.116 0.116 0.12 0.12 0.12 zinc
chloride -- -- -- -- -- -- -- ethanol (100%) 33.95 38.8 38.8 43.65
37.20 37.20 37.20 BTC-65 (50%) -- -- -- -- -- -- -- Onyxide 3300
(33%) 0.30 0.29 0.29 0.29 0.30 0.30 0.30 Neodol 91-6 0.093 0.09
0.09 0.09 0.093 0.093 0.093 monoethanolamine -- -- 0.25 -- 0.13
0.44 0.837 triethanolamine 0.13 0.12 0.12 0.12 0.093 0.093 0.093
sodium citrate.cndot.2H.sub.2O 0.18 0.18 0.18 0.18 -- -- --
Citrasol 502 (50%) -- -- -- -- 0.093 0.093 0.093 NH4OH (29.86%)
0.081 0.081 0.14 0.063 0.11 0.11 0.11 NaOH (10%) -- -- -- -- -- --
-- Triton BX -- -- -- -- -- -- -- Monacor BE -- -- -- -- -- -- --
Silwet Hydrostable -- -- -- -- -- -- -- fragrance -- -- -- -- -- --
-- propellant 7.0 7.0 7.0 7.0 7.0 7.0 7.0 di H.sub.2O q.s. q.s.
q.s. q.s. q.s. q.s. q.s. pH 9.11 9.17 10.44 9.18 9.45 9.98 10.37
zinc ions (ppm) 272.8 272.8 272.8 272.8 272.8 272.8 272.8 can type
W W W W W W W ASTM E 1052 (log10 PV1 = 1.73 PV1 = 3.27 PV1 .gtoreq.
5.00 PV1 .gtoreq. 5.00 -- PV1 .gtoreq. 5.00 -- reduction) ASTM 1053
(log10 PV1 = 0.00 PV1 = 0.38 PV1 .gtoreq. 2.25 PV1 = 2.00 PV1 =
2.28 PV1 .gtoreq. 4.25 PV1 .gtoreq. 4.50 reduction) AOAC Germicidal
-- -- -- -- -- -- -- Spray EN 13697 (log10 -- -- -- -- -- -- --
reduction) EN 13697 T. ment -- -- -- -- -- -- -- (log10 reduction)
E58 E59 E60 E61 E62 zinc acetate -- -- -- -- -- zinc
sulfate.cndot.7H.sub.2O 0.12 0.12 0.12 0.12 0.12 zinc chloride --
-- -- -- -- ethanol (100%) 39.06 39.06 39.06 39.06 41.85 BTC-65
(50%) -- -- -- -- -- Onyxide 3300 (33%) 0.30 0.30 0.30 0.30 0.30
Neodol 91-6 0.093 0.093 0.093 0.093 0.093 monoethanolamine 0.13
0.44 0.065 0.809 0.186 triethanolamine 0.093 0.093 0.093 0.093
0.093 sodium citrate.cndot.2H.sub.2O -- -- 0.186 -- -- Citrasol 502
(50%) 0.11 0.11 -- 0.11 0.11 NH4OH (29.86%) 0.11 0.11 0.11 0.11
0.102 NaOH (10%) -- -- -- -- -- Triton BX -- -- -- -- -- Monacor BE
-- -- -- -- -- Silwet Hydrostable -- -- -- -- -- fragrance -- -- --
-- -- propellant 7.0 7.0 7.0 7.0 7.0 di H.sub.2O q.s. q.s. q.s.
q.s. q.s. pH 9.40 9.95 10.13 10.38 9.33 zinc ions (ppm) 272.8 272.8
272.8 272.8 272.8 can type W W W W W ASTM E 1052 (log10 PV1
.gtoreq. 5.00 PV1 .gtoreq. 5.00 PV1 .gtoreq. 5.00 PV1 .gtoreq. 5.00
-- reduction) ASTM 1053 (log10 PV1 = 4.75 PV1 .gtoreq. 5.00 PV1 =
4.00 PV1 .gtoreq. 4.42 PV1 = 3.05 reduction) AOAC Germicidal -- --
-- -- -- Spray EN 13697 (log10 -- -- -- -- -- reduction) EN 13697
T. ment -- -- -- -- -- (log10 reduction) E63 E64 E65 E66 zinc
acetate -- -- -- -- zinc sulfate.cndot.7H.sub.2O 0.12 0.12 0.12
0.12 zinc chloride -- -- -- -- ethanol (100%) 41.85 41.85 40.0
39.81 BTC-65 (50%) -- -- -- -- Onyxide 3300 (33%) 0.30 0.30 0.30
0.30 Neodol 91-6 0.093 0.093 0.093 0.093 monoethanolamine 0.502
0.818 0.931 0.26 triethanolamine 0.093 0.093 0.093 0.12 sodium
citrate.cndot.2H.sub.2O -- -- -- -- Citrasol 502 (50%) 0.11 0.11
0.12 -- NH4OH (29.86%) 0.093 0.093 0.093 0.15 NaOH (10%) -- -- --
-- Triton BX -- -- -- -- Monacor BE -- -- -- -- Silwet Hydrostable
-- -- -- 0.10 fragrance -- -- -- -- propellant 7.0 7.0 7.0 7.0 di
H.sub.2O q.s. q.s. q.s q.s. pH 9.98 10.25 10.50 10.50 zinc ions
(ppm) 272.8 272.8 272.8 272.8 can type W W S E ASTM E 1052 (log10
-- -- PV1 .gtoreq. 7.00 PV1 .gtoreq. 7.00 reduction) ASTM 1053
(log10 PV1 = 4.58 PV1 .gtoreq. 5.00 PV1 .gtoreq. 5.00 PV1 .gtoreq.
4.5 reduction) (10 min) (10 min) AOAC Germicidal -- -- -- -- Spray
EN 13697 (log10 -- -- -- -- reduction) EN 13697 T. ment -- -- -- --
(log10 reduction)
TABLE-US-00009 TABLE 1 E67 E68 E69 E70 E71 E72 E73 zinc acetate --
-- -- -- -- -- -- zinc sulfate.cndot.7H.sub.2O 0.126 0.126 0.0099
0.0198 0.198 0.3869 3.969 zinc chloride -- -- -- -- -- -- --
ethanol (100%) 42.80 42.797 42.797 42.797 42.797 42.797 42.797
BTC-65 (50%) -- -- -- -- -- -- -- Onyxide 3300 (33%) 0.303 0.303
0.303 0.303 0.303 0.303 0.303 Neodol 91-6 -- -- -- -- -- -- --
Crodasol WS 0.135 0.135 0.135 0.135 0.135 0.135 0.135
monoethanolamine 0.936 0.936 0.936 0.936 1.362 2.382 11.937
triethanolamine 0.09 0.09 0.09 0.09 0.09 0.09 0.09 citric acid
(anhy.) 0.054 0.10 0.008 0.015 0.157 0.315 3.15 sodium
citrate.cndot.2H.sub.2O -- -- -- -- -- -- -- Citrasol 502 (50%) --
-- -- -- -- -- -- NH4OH (29.86%) 0.09 0.09 0.09 0.09 0.09 0.09 0.09
NaOH (10%) -- -- -- -- -- -- -- Triton BX -- -- -- -- -- -- --
Monacor BE 0.135 0.135 0.135 0.135 0.135 0.135 0.135 Silwet
Hydrostable -- -- -- -- -- -- -- fragrance 0.218 0.218 -- -- -- --
-- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. pH 10.50 10.45
10.73 10.66 10.26 10.54 10.08 zinc ions (ppm) 286 286 22.5 45 450
900 9000 ASTM E 1052 (log10 -- -- -- -- -- -- -- reduction) ASTM
1053 (log10 PV1 .gtoreq. 4.75 PV1 .gtoreq. 4.25 PV1 .gtoreq. 5.83
PV1 .gtoreq. 5.83 PV1 .gtoreq. 5.83 PV1 .gtoreq. 5.83 PV1 .gtoreq.
5.83 reduction) AOAC Germicidal -- -- -- -- -- -- -- Spray, 5
minute contact time EN 13697 (log10 -- -- -- -- -- -- -- reduction)
EN 13697 T. ment -- -- -- -- -- -- -- (log10 reduction) E74 E75 E76
E77 E78 E79 E80 zinc acetate -- -- -- -- -- -- -- zinc
sulfate.cndot.7H.sub.2O 0.0003969 0.00198 0.00396 0.00594 0.00792
0.126 0.126 zinc chloride -- -- -- -- -- -- -- ethanol (100%)
42.797 42.797 42.797 42.797 42.797 49.797 46.797 BTC-65 (50%) -- --
-- -- -- -- -- Onyxide 3300 (33%) 0.303 0.303 0.303 0.303 0.303
0.303 0.303 Neodol 91-6 -- -- -- -- -- -- -- Crodasol WS 0.135
0.135 0.135 0.135 0.135 0.135 0.135 monoethanolamine 0.950 1.073
1.026 1.284 1.233 1.47 0.936 triethanolamine 0.090 0.090 0.090
0.090 0.090 0.090 0.090 citric acid (anhy.) 0.100 0.100 0.100 0.100
0.100 0.100 0.100 sodium citrate.cndot.2H.sub.2O -- -- -- -- -- --
-- Citrasol 502 (50%) -- -- -- -- -- -- -- NH4OH (29.86%) 0.09 0.09
0.09 0.09 0.09 0.09 0.09 NaOH (10%) -- -- -- -- -- -- -- Triton BX
-- -- -- -- -- -- -- Monacor BE 0.135 0.135 0.135 0.135 0.135 0.135
0.135 Silwet Hydrostable -- -- -- -- -- -- -- fragrance -- -- -- --
-- 0.225 0.225 di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. pH
10.47 10.52 10.45 10.53 10.43 10.68 10.43 zinc ions (ppm) 0.9 4.5 9
13.5 18 286 286 ASTM E 1052 (log10 -- -- -- -- -- -- -- reduction)
ASTM 1053 (log10 PV1 = 2.90 PV1 = 3.23 PV1 = 3.23 PV1 = 3.56 PV1 =
4.23 PV1 .gtoreq. 4.27 PV1 .gtoreq. 4.27 reduction) AOAC Germicidal
-- -- -- -- -- -- -- Spray, 5 minute contact time EN 13697 (log10
-- -- -- -- -- -- -- reduction) EN 13697 T. ment -- -- -- -- -- --
-- (log10 reduction)
[0210] The compositions of Table 1P and Table CP, which as
indicated, included 7% wt. of the propellant, AB46, and were
supplied to one or more types of conventional, sealed dispensing
container which are defined in those tables as "can type"
wherein:
TABLE-US-00010 can type: S unlined tin-plated, three-piece steel
can, nominal 6 fluid ounce fill volume (ex. Ball Co.) E epoxy
phenolic lined aluminum can, nominal 500 ml fill volume (ex. EXAL
Co.) W polymer lined, transparent glass Wheaton bottle, nominal 120
ml fill volume
[0211] Each of the foregoing sealed dispensing containers further
comprised a valve which permitted for the dispensing of the
sprayable, pressurized treatment compositions. The sprayable
treatment composition was dispensed in a conventional manner and
used for subsequent testing, viz., by releasing it from the
container, and then evaluated according to one or more of the tests
indicated on the Tables.
[0212] As can be seen from the foregoing results indicated on the
foregoing Tables, the compositions of the invention exhibited
excellent microbicidal efficacy as demonstrated by the various test
results, even wherein reduced levels of ethanol (e.g, less than 50%
wt, especially 45% wt.) were present as a constituent.
[0213] Further examples of sprayable, pressurized inanimate surface
treatment compositions according to the invention are described on
Table 1P-A which incorporated slightly higher amounts of the
propellant, AB46. The indicated proportion of the composition of
Table 1P-A was combined with the AB46 propellant, in a unlined
tin-plated, three-piece steel can, nominal 6 fluid ounce fill
volume (ex. Ball Co.) (can type: "S") to form a pressurized
composition. Subsequently the sprayable, pressurized inanimate
surface treatment compositions were dispensed from the can into a
clean glass beaker, and the collected liquid was used in the
subsequent microbicidal testing.
TABLE-US-00011 TABLE 1P-A E98 E99 E100 E101 E102 E103 zinc acetate
-- -- -- -- -- -- zinc sulfate.cndot.7H.sub.2O 0.14 0.14 0.14 0.14
0.14 0.14 zinc chloride -- -- -- -- -- -- ethanol (100%) 49.77
49.77 49.77 49.77 49.77 49.77 BTC-65 (50%) -- -- -- -- -- --
Onyxide 3300 (33%) 0.337 0.337 0.337 0.337 0.337 0.337 Neodol 91-6
-- -- -- -- -- -- monoethanolamine -- 0.01 -- 0.34 1.4 4.92
triethanolamine 0.1 0.1 0.1 0.1 0.1 0.1 sodium
citrate.cndot.2H.sub.2O -- -- -- -- -- -- Citrasol 502 (50%) 0.27
0.18 0.12 0.12 0.12 0.12 NH4(OH) (29.86%) 0.1 0.1 0.1 0.1 0.1 0.1
NaOH (10%) -- -- -- -- -- -- Trilon BX -- -- -- -- -- -- Monacor BE
0.15 0.15 0.15 0.15 0.15 0.15 Crodasol WS 0.15 0.15 0.15 0.15 0.15
0.15 fragrance -- -- -- -- -- -- di H.sub.2O q.s. q.s. q.s. q.s.
q.s. q.s. pH 9.0 9.25 9.50 10.0 10.51 11.03 zinc ions (ppm) 318.33
318.33 318.33 318.33 318.33 318.33 can type S S S S S S ASTM 1053
(log10 PV1 = 2.56 PV1 = 2.9 PV1 = 3.73 PV1 = 4.56 PV1 .gtoreq. 4.73
PV1 .gtoreq. 4.73 reduction), 30 seconds contact time ASTM 1053
(log10 PV1 = 3.56 PV1 = 3.73 PV1 = 4.56 PV1 .gtoreq. 4.73 PV1
.gtoreq. 4.73 PV1 .gtoreq. 4.73 reduction), 5 minute contact time
To each of examples E98 through E103 was added an additional amount
of 10% wt. of AB46 (based on the total weight of the example
composition's constituents, which totaled 100% wt.) as the
propellant constituent, and the reported microbicidal testing was
performed utilizing the recovered liquid collected immediately
after a quantity of the pressurized composition was dispensed from
an aerosol canister
TABLE-US-00012 TABLE 1 E104 E105 E106 E107 E108 E109 E110 E111 zinc
acetate -- -- -- -- -- -- -- -- zinc sulfate.cndot.7H.sub.2O 0.14
0.14 0.14 0.14 0.14 0.14 0.14 0.14 zinc chloride -- -- -- -- -- --
-- -- ethanol (100%) 35.0 35.0 35.0 35.0 40.0 40.0 40.0 40.0 BTC-65
(50%) -- -- -- -- -- -- -- -- Onyxide 3300 (33%) -- -- -- -- -- --
-- -- Neodol 91-6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 monoethanolamine
-- -- -- -- 0.07 0.07 0.07 0.07 triethanolamine 0.07 0.07 0.07 0.07
0.1 0.1 0.1 0.1 sodium citrate 0.2 0.2 0.2 0.2 0.1 0.1 0.1 0.1
Citrasol 502 (50%) -- -- -- -- 0.05 0.05 0.05 0.05 NH4OH (29.86%)
0.07 0.07 0.07 0.07 -- -- -- -- NaOH (10%) 0.07 0.13 0.16 0.18 0.06
0.17 0.25 0.32 Triton BX -- -- -- -- -- -- -- -- Monacor BE -- --
-- -- -- -- -- -- sodium benzoate -- -- -- -- -- -- -- -- Silwet
Hydrostable -- -- -- -- -- -- -- -- fragrance -- -- -- -- -- -- --
-- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. q.s. pH 9.99
10.51 11.04 11.5 9.46 9.98 10.5 11.51 zinc ions (ppm) 318.33 318.33
318.33 318.33 318.33 318.33 318.33 318.33 ASTM E1053 (log10 -- --
PV1 = 4.44 PV1 = 4.83 -- -- PV1 = 3.17 PV1 = 4.17 reduction) E112
E113 E114 E115 E116 E117 E118 E119 E120 zinc acetate -- -- -- -- --
-- -- -- -- zinc sulfate.cndot.7H.sub.2O 0.14 0.14 0.14 0.14 0.14
0.14 0.14 0.14 0.14 zinc chloride -- -- -- -- -- -- -- -- --
ethanol (100%) 42.5 42.5 42.5 42.5 42.5 45.0 45.0 45.0 45.0 BTC-65
(50%) -- -- -- -- -- -- -- -- -- Onyxide 3300 (33%) -- -- -- -- --
-- -- -- -- Neodol 91-6 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
monoethanolamine -- -- -- -- -- 0.2 0.2 0.2 0.2 triethanolamine
0.15 0.15 0.15 0.15 0.15 0.27 0.27 0.27 0.27 sodium citrate -- --
-- -- -- -- -- -- -- Citrasol 502 (50%) 0.2 0.02 0.02 0.02 0.02
0.65 0.29 0.14 0.14 NH4OH (29.86%) 0.12 0.12 0.12 0.12 0.12 0.12
0.12 0.12 0.12 NaOH (10%) 0.06 0.04 0.22 0.37 0.5 -- -- 0.32 0.47
Triton BX -- -- -- -- -- -- -- -- -- Monacor BE -- -- -- -- -- --
-- -- -- sodium benzoate -- -- -- -- -- -- -- -- -- Silwet
Hydrostable -- -- -- -- -- -- -- -- -- fragrance -- -- -- -- -- --
-- -- -- di H.sub.2O q.s. q.s. q.s. q.s. q.s. q.s. q.s. q.s. q.s.
pH 8.49 9.5 10.0 10.5 11.5 8.51 9.53 10.46 10.98 zinc ions (ppm)
318.33 318.33 318.33 318.33 318.33 318.33 318.33 318.33 318.33 ASTM
E1053 (log10 -- -- PV1 = 5.0 PV1 .gtoreq. 5.17 PV1 .gtoreq. 5.17 --
-- PV1 .gtoreq. 5.17 PV1 .gtoreq. 5.17 reduction) To each of
examples E104 through E111 was added an additional amount of 10%
wt. of AB46 (based on the total weight of the example composition's
constituents, which totaled 100% wt.) as the propellant
constituent, and the reported microbicidal testing was performed
utilizing the recovered liquid collected immediately after a
quantity of the pressurized composition was dispensed from an
aerosol canister To each of examples E112 through E120 was added an
additional amount of 10% wt. of AB46 (based on the total weight of
the example composition's constituents, which totaled 100% wt.) as
the propellant constituent, and the reported microbicidal testing
was performed utilizing the recovered liquid collected immediately
after a quantity of the pressurized composition was dispensed from
an aerosol canister
[0214] Certain further pressurized compositions, both comparative
compositions and further example compositions according to the
invention were produced; these are described on Table 2 and Table
3. These compositions were formed, and supplied to a sealed
dispensing container (can type "S") and a valve, in the same manner
as described with reference to the compositions of Table 1P, 1P-A,
and Table CP.
[0215] These compositions were periodically tested at indicated
time intervals for efficacy against poliovirus Type 1 pursuant to
ASTM 1053. Further reported on Table 2 was the determination if the
tested pressurized compositions achieved "complete inactivation",
subsequent to various intervals of storage and also the
concentration of zinc ions in the formulations as measured prior to
storage, as well as subsequent to several intervals of storage
either at room temperature, and at 40.degree. C.
TABLE-US-00013 TABLE 2 (Pressurized Compositions) E121 E122 E123
C29 C30 C31 zinc sulfate.cndot.7H.sub.2O 0.12 0.05 0.05 -- -- --
ethanol (100%) 35.0 37.0 40.0 35.0 37.0 40.0 Onyxide 3300 (33%)
0.28 0.28 0.28 0.28 0.28 0.28 Neodol 91-6 0.09 0.09 0.09 0.09 0.09
0.09 monoethanolamine 0.93 0.81 0.79 0.62 0.67 0.66 triethanolamine
0.09 0.09 0.09 0.09 0.09 0.09 Citrasol 502 (50%) 0.11 0.11 0.11
0.11 0.11 0.11 NH4OH (29.86%) 0.09 0.09 0.09 0.09 0.09 0.09
propellant 7.0 7.0 7.0 7.0 7.0 7.0 di H.sub.2O q.s. q.s. q.s. q.s.
q.s. q.s. pH 10.36 10.42 10.42 10.37 10.40 10.42 zinc ions (ppm)
285 182 182 -- -- -- can type S S S S S S appearance colorless,
colorless, colorless, colorless, colorless, colorless, transparent
transparent transparent transparent transparent transparent ASTM
1053 (log10 reduction)/complete inactivation ? (Yes/No) of PV1
initial - at 0 weeks .gtoreq.5.00/Yes .gtoreq.5.00/Yes
.gtoreq.5.00/Yes -- -- -- storage (at 40.degree. C.) after 2 weeks
.gtoreq.5.00/Yes .gtoreq.5.00/Yes .gtoreq.5.00/Yes -- -- -- storage
(at 40.degree. C.) after 4 weeks .gtoreq.4.27/Yes .gtoreq.4.27Yes
.gtoreq.4.27/Yes -- -- -- storage (at 40.degree. C.) after 9 weeks
.gtoreq.6.00/Yes .gtoreq.6.00/Yes .gtoreq.6.00/Yes -- -- -- storage
(at 40.degree. C.) after 10 weeks .gtoreq.6.00/Yes .gtoreq.6.00/Yes
.gtoreq.6.00/Yes -- -- -- storage (at 40.degree. C.) after 10 weeks
-- -- -- =4.58/No =4.91/No =4.66/No storage (at room temperature,
20- 22.degree. C.) zinc ion concentration (ppm) initial - at 0
weeks 272.8 114.2 114.2 -- -- -- storage after 4 weeks 259.0 113.0
114.0 -- -- -- storage (at 40.degree. C.) after 10 weeks 277.0
111.0 114.0 -- -- -- storage (at 40.degree. C.) after 14 weeks
277.0 -- -- -- -- -- storage (at room temperature, 20- 22.degree.
C.)
[0216] As is demonstrated by certain of the compositions of Table
2, pressurized compositions according to the invention exhibited
good storage stability (the filled pressurized aerosol canisters
were maintained at 40.degree. C. for the duration of the testing)
as well as excellent antimicrobial efficacy against poliovirus type
1 at a 10 minute contact time as demonstrated by the reported test
results. It is to be noted that the comparative compositions
exhibited markedly poorer antimicrobial efficacy following storage
at 10 weeks at room temperature, as compared to the example
compositions according to the invention. Concurrently as reported
above, the concentration of available zinc ions was not observed to
change in any significant amount over time, suggesting that the
zinc ions did not deposit upon the surfaces of the aerosol canister
over time.
[0217] Thereafter the canisters containing the example compositions
were evacuated, and visually inspected for corrosion or rust. No
corrosion or rusting was observed either on interior or exterior
surfaces of the canister.
[0218] Two of the foregoing example compositions were again tested
after having been retained in a pressurized container for in excess
of 12 months at room temperature (20.degree. C.-22.degree. C.), and
thereafter tested for microbicidal efficacy. The formulations, the
time interval for which they were stored at room temperature, and
the test results following the indicated time interval (days) are
reported on the following Table 3.
TABLE-US-00014 TABLE 3 (Pressurized Example Compositions, Long Term
Stability Testing) zinc sulfate.cndot.7H.sub.2O 0.12 0.05 ethanol
(100%)