U.S. patent application number 14/996573 was filed with the patent office on 2016-05-12 for freshening compositions comprising malodor binding polymers and malodor counteractants.
The applicant listed for this patent is The Procter & Gamble Company. Invention is credited to Carla Jean COLINA, Cahit EYLEM, Lon Montgomery GRAY, Shih-Chuan LIOU, Christine Marie READNOUR, Kristin Rhedrick WILLIAMS, Ricky Ah-Man WOO.
Application Number | 20160130745 14/996573 |
Document ID | / |
Family ID | 43602771 |
Filed Date | 2016-05-12 |
United States Patent
Application |
20160130745 |
Kind Code |
A1 |
WILLIAMS; Kristin Rhedrick ;
et al. |
May 12, 2016 |
FRESHENING COMPOSITIONS COMPRISING MALODOR BINDING POLYMERS AND
MALODOR COUNTERACTANTS
Abstract
Freshening compositions comprising a malodor binding polymer, a
malodor counteractant comprising at least one aliphatic aldehyde,
and an aqueous carrier, wherein the composition is essentially free
of any material that would soil or stain fabric; and methods
thereof are provided. In some embodiments, the malodor binding
polymer comprises a homopolymeric polyethylenimine having a
molecular weight of about 1,000 to about 2,000,000. Such freshening
compositions may be used to reduce malodor and/or microbes on
inanimate surfaces or in the air.
Inventors: |
WILLIAMS; Kristin Rhedrick;
(West Chester, OH) ; COLINA; Carla Jean;
(Cincinnati, OH) ; EYLEM; Cahit; (West Chester,
OH) ; GRAY; Lon Montgomery; (Florence, KY) ;
LIOU; Shih-Chuan; (Cincinnati, OH) ; READNOUR;
Christine Marie; (Fort Mitchell, KY) ; WOO; Ricky
Ah-Man; (Hamilton, OH) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
The Procter & Gamble Company |
Cincinnati |
OH |
US |
|
|
Family ID: |
43602771 |
Appl. No.: |
14/996573 |
Filed: |
January 15, 2016 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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12562534 |
Sep 18, 2009 |
9260817 |
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14996573 |
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Current U.S.
Class: |
424/76.1 |
Current CPC
Class: |
D06M 13/203 20130101;
A61L 2209/13 20130101; A61L 9/01 20130101; D06M 23/06 20130101;
A61L 2209/21 20130101; D06M 13/192 20130101; D06M 13/402 20130101;
D06M 15/61 20130101; A61L 2202/26 20130101; D06M 13/005 20130101;
D06M 23/02 20130101; D06M 13/127 20130101; D06M 13/148 20130101;
D06M 13/256 20130101; A61L 2/22 20130101; A61L 9/14 20130101 |
International
Class: |
D06M 15/61 20060101
D06M015/61; D06M 23/06 20060101 D06M023/06; A61L 9/01 20060101
A61L009/01 |
Claims
1. A freshening composition for reducing malodor comprising: an
effective amount of a malodor binding polymer; a malodor
counteractant comprising at least one aliphatic aldehyde; an
aqueous carrier; wherein said composition is essentially free of
any material that would soil or stain fabric.
2. The composition of claim 1 wherein said malodor binding polymer
is a polyamine having a molecular weight of at least 150 Daltons
and 15% to 80% primary amino groups
3. The composition of claim 1 wherein said malodor binding polymer
is a homopolymeric polyethyleneimine having a molecular weight of
about 1,000 to about 2,000,000 Daltons.
4. The composition of claim 1 wherein said malodor binding polymer
is present in an amount of about 0.01% to about 1% by weight of
said composition.
5. The composition of claim 3 wherein said homopolymeric
polyethyleneimine is present in an amount of about 0.01% to about
0.07% by weight of said composition.
6. The composition of claim 1 wherein said malodor binding polymer
is a homopolymeric polyethyleneimine having a molecular weight of
about 25,000 Daltons.
7. The composition of claim 1 wherein said at least one aliphatic
aldehyde is present in the amount of about 0.001% to about 5% by
total weight of said composition.
8. The composition of claim 1 wherein said at least one aliphatic
aldehyde is present in the amount of about 0.001% to about 1% by
total weight of said composition.
9. The composition of claim 7 wherein said at least one aliphatic
aldehyde is selected from the group consisting of bourgeonal,
citral, citronellyl oxyacetaldehyde, cymal, decyl aldehyde,
helional, hexyl cinnamic aldehyde, lauric aldehyde, ligustral,
lyral, melonal, methyl dihydro jasmonate, methyl nonyl
acetaldehyde, methyl phenyl carbinyl acetate, nonyl aldehyde, 2'
6-nonadien-1-al, octyl aldehyde, oxane, P.T. bucinal, polysantol,
rhubafuran, tripal, and mixtures thereof.
10. The composition of claim 1 wherein said composition further
comprises a buffering agent selected from the group consisting of
carboxylic acid, dicarboxcylic acid,
N-(2-Acetamido)-2-aminoethanesulfonic acid, and mixtures
thereof.
11. The composition of claim 1 wherein said composition further
comprises maleic acid.
12. The composition of claim 1 wherein said composition comprises a
pH of about 3 to about 8.
13. The composition of claim 1 wherein said composition comprises a
pH of about 5 to 8.
14. The composition of claim 1 wherein said composition is free of
anionic surfactants.
15. The composition of claim 1 wherein said composition comprises
no more than 3% surfactant by weight of said composition.
16. The composition of claim 1 wherein said composition comprises
no more than 1% surfactant by weight of said composition.
17. The composition of claim 1 wherein said aqueous carrier is
present in an amount of 90% to about 99.5%.
18. An aqueous freshening composition for reducing malodor
comprising: a homopolymeric polyethyleneimine having a molecular
weight of 1,000 to 2,000,000; at least one aliphatic aldehyde; a
glycol; a dicarboxylic acid to provide a pH of about 3 to about 8;
about 90% to about 99.5% of an aqueous carrier; wherein said
composition is essentially free of any material that would soil or
stain fabric.
19. A method of reducing malodor comprising the steps of: a.
providing the freshening composition of claim 1; b. dispersing an
effective amount of said freshening composition on an inanimate
surface or in the air.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to freshening compositions
comprising a malodor binding polymer, malodor counteractants
comprising at least one aliphatic aldehyde, and an aqueous carrier;
and methods thereof.
BACKGROUND OF THE INVENTION
[0002] Freshening products for reducing or masking malodors on
fabrics and in air are currently available and are described in the
patent literature. The Procter & Gamble Company sells fabric
and air freshening products under the FEBREZE.RTM. brand name These
products typically contain perfume, solubilizer, cyclodextrin, and
an aqueous carrier. S. C. Johnson sells products such as Glade.RTM.
Fabric and Air Odor Eliminator and Oust.RTM. Surface Disinfectant
and Air Sanitizer. Reckitt-Benckiser sells products such as
Lysol.RTM. Disinfectant Spray.
[0003] Certain freshening compositions do not effectively
neutralize a broad range of malodors on fabrics and in the air.
Further, certain freshening compositions may cause fabrics to turn
yellow or brown under natural light and/or make fabric susceptible
to soiling, particularly products that contain certain types or
amounts of aldehydes and/or surfactants.
[0004] There remains a need for improved freshening compositions
that neutralize a broad range of malodors, including malodors
caused by microbes, and that provide a hedonic benefit, while
avoiding soiling and staining of fabrics that may be contacted by
the freshening composition.
SUMMARY OF THE INVENTION
[0005] The present invention relates to a freshening composition
for reducing malodor. In one embodiment, the freshening composition
for reducing malodor comprises an effective amount of a malodor
binding polymer; a malodor counteractant comprising at least one
aliphatic aldehyde; an aqueous carrier; wherein said composition is
essentially free of any material that would soil or stain fabric.
In another embodiment, the freshening composition comprises a
homopolymeric polyethyleneimine having a molecular weight of 1,000
to 2,000,000; at least one aliphatic aldehyde; a glycol; a
dicarboxylic acid to provide a pH of about 3 to about 8; about 90%
to about 99.5% of an aqueous carrier; wherein said composition is
essentially free of any material that would soil or stain
fabric.
[0006] The present invention also relates to methods of reducing
malodor comprising the steps of: providing a freshening composition
comprising an effective amount of a malodor binding polymer, a
malodor counteractant comprising at least one aliphatic aldehyde,
an aqueous carrier, wherein said composition is essentially free of
any material that would soil or stain fabric; and dispersing an
effective amount of said freshening composition on an inanimate
surface or in the air.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a bar graph showing the reduction of aldehydic
malodors evaporating off fabrics treated with freshening
compositions according to the present invention containing a
malodor binding polymer in comparison to a freshening composition
lacking such malodor binding polymer.
[0008] FIG. 2 is a bar graph showing microbe reduction with a
freshening composition according to the present invention
containing a malodor binding polymer in comparison to a freshening
composition lacking such malodor binding polymer.
DETAILED DESCRIPTION OF THE INVENTION
[0009] The freshening composition of the present invention is
designed to deliver genuine malodor reduction and not function
merely by using perfume to cover up or mask odors. The freshening
composition reduces malodor in the air or on inanimate surfaces,
for example, fabrics that are contaminated with environmental odors
such as food and tobacco odors, or wetted with perspiration. The
freshening composition may also reduce microbes on inanimate
surfaces or in air. The freshening composition may also act as a
barrier to prevent malodors from adhering to or penetrating an
inanimate surface.
[0010] A genuine malodor reduction provides a sensory and
analytically measurable (e.g. gas chromatograph) malodor reduction.
Thus, if the freshening composition delivers a genuine malodor
reduction, the freshening composition will neutralize malodors in
the air and/or on fabrics. "Neutralize" or "neutralization" as used
herein means chemically reacting with malodor components (e.g. the
reaction of primary amines with aldehydes to form imines, reductive
alkylation of amines, protonation and deprotonation of amines,
polymerization or de-polymerization); or suppressing the volatility
of malodorous components such that other parts of the composition
may react (e.g. acid--base neutralization); or physically
entrapping odorous molecules such that they are not re-released
into the air (e.g. cyclodextrin inclusion complexes as described
herein).
I. Freshening Composition
[0011] The freshening composition for reducing malodor comprises a
malodor binding polymer, a malodor counteractant comprising at
least one aliphatic aldehyde, and an aqueous carrier, wherein said
composition is essentially free of materials that soil or stain
fabric. The total amount of surfactants (e.g. solubilizer, wetting
agent) in the freshening composition is from 0% to 3% or no more
than 3%, alternatively from 0% to 1% or no more than 1%,
alternatively from 0% to 0.9% or no more than 0.9%, alternatively
from 0% to 0.7 or no more than 0.7%, alternatively from 0% to 0.5%
or no more than 0.5%, alternatively from 0% to 0.3% or no more than
0.3%, by weight of the composition. Compositions with higher
concentrations can make fabrics susceptible to soiling and/or leave
unacceptable visible stains on fabrics as the solution
evaporates.
[0012] A. Malodor Binding Polymer
[0013] The freshening composition of the present invention includes
a malodor binding polymer. A malodor binding polymer is polymer
having an available functional group (e.g. amine) that has the
affinity to neutralize malodor components. Monomers having an
available function group with an affinity to neutralize malodor
components are also contemplated. In the case of amine based
compounds, the amine will have an affinity for aldehyde malodors.
The amine may react with aldehyde malodors and form a new compound,
such as an aminol, imine, or enamine which is not odorous.
[0014] A malodor binding polymer may include amine based compounds,
such as monoamines, amino acids, polyethyleneimine polymers (PEIs),
modified PEIs, substituted PEIs; acrylic acid polymers, such as
polyacrylate co-polymer (e.g. Acumer.TM. 9000 from Rohm &
Haas), polyacrylic acid polymers (e.g. Acusol.TM. from Rohm &
Haas), and modified acrylate copolymers (e.g. Aculyn.TM. from Rohm
& Haas); and modified methacrylate copolymers (e.g.
HydroSal.TM. from Salvona Technologies); or mixtures thereof.
[0015] 1. Amine Based Compounds
[0016] In some embodiments, the malodor binding polymer is an amine
based compound with a molecular weight greater than 100 Daltons and
at least 10% of its amine groups are primary amines In one
embodiment, the amine-based compound will be a polyamine with a
molecular weight greater than 150 Daltons and 15% to 80% of its
amine groups are primary amines In another embodiment, the malodor
binding polymer is an amine-based compound with a molecular weight
greater than 1000 Daltons and from 0% to about 10% or less than 10%
of its amine groups are primary amines
[0017] A general structure for a primary amine compound useful in
this invention is as follows:
B--(NH.sub.2).sub.n;
wherein B is a carrier material, and n is an index of value of at
least 1. Suitable B carriers include both inorganic and organic
carrier moieties. By "inorganic carrier", it is meant a carrier
which is comprised of non- or substantially non-carbon based
backbones.
[0018] Compounds containing a secondary amine group have a
structure similar to the above with the exception that the compound
comprises one or more --NH-- groups as well as --NH.sub.2 groups.
The amine compounds of this general type may be relatively viscous
materials.
[0019] Exemplary amine based compounds are those selected from
monoamines, aminoaryl derivatives, polyamines and derivatives
thereof, polyamino acids and copolymers thereof, glucamines,
dendrimers, PEIs, substituted amines and amides monoamines, or
mixtures thereof.
[0020] a. Monoamines
[0021] Monoamines may be utilized in the present invention.
Nonlimiting examples of suitable monoamines for use in the present
invention include, but are not limited to, primary amines that also
contain hydroxy and/or alkoxy functional groups, such as the
2-hydroxyamines and/or 3-hydroxyamines; primary or secondary amines
that also contain a functional group that enhances deposition of
the monoamine compared to monoamines that lack that functional
group, especially when the monoamine is interacting with the
benefit agent. Primary monoamines may also be used herein in
combination with secondary monoamines However, sufficient levels of
the primary monoamine must be used to provide at least 10% of the
total amine groups within such combinations as primary amine
groups.
[0022] b. Aminoaryl Derivatives
[0023] Exemplary aminoaryl derivatives are the amino-benzene
derivatives including the alkyl esters of 4-amino benzoate
compounds, ethyl-4-amino benzoate, phenylethyl-4-aminobenzoate,
phenyl-4-aminobenzoate, 4-amino-N'-(3-aminopropyl)-benzamide, or
mixtures thereof.
[0024] c. Polyamines
[0025] Examples of suitable amino functional polymers containing at
least one primary amine group for the purposes of the present
invention are: [0026] Polyvinylamine with a MW of 300-2.10E6
Daltons (e.g Lupamine series 1500, 4500, 5000, 9000 available from
BASF); [0027] Polyvinylamine alkoxylated with a MW of .gtoreq.600
Daltons and a degree of ethoxylation of at least 0.5; [0028]
Polyvinylamine vinylalcohol--molar ratio 2:1,
polyvinylaminevinylformamide--molar ratio 1:2 and polyvinylamine
vinylformamide-molar ratio 2:1; [0029] Triethylenetetramine,
diethylenetriamine, tetraethylenepentamine; [0030]
Bis-aminopropylpiperazine; [0031] amino substituted
polyvinylalcohol with a MW ranging from 400-300,000 Daltons; [0032]
polyoxyethylene bis [amine] available from e.g. Sigma; [0033]
polyoxyethylene bis [6-aminohexyl] available from e.g. Sigma;
[0034] N,N'-bis-(3-aminopropyl)-1,3-propanediamine linear or
branched (TPTA); [0035] N,N'-bis-(3-aminopropyl)ethylenediamine;
[0036] bis (amino alkyl) alkyl diamine, linear or branched; and
[0037] 1,4-bis-(3-aminopropyl) piperazine (BNPP).
[0038] d. Polyamino Acids
[0039] Suitable amine based compounds include polyamino acids.
Polyamino acids are made up of amino acids or chemically modified
amino acids. The amino acids may be selected from cysteine,
histidine, isoleucine, tyrosine, tryptophane, leucine, lysine,
glutamic acid, glutamine, glycine, alanine, aspartic acid,
arginine, asparagine, phenylalanine, proline, serine, histidine,
threonine, methionine, valine, and mixtures thereof. Amino acid
derivatives may be tyrosine ethylate, glycine methylate,
tryptophane ethylate, or mixtures thereof; homopolymers of amino
acids; hydroxyamines; polyamino acids; or mixtures thereof.
[0040] In chemically modified amino acids, the amine or acidic
function of the amino acid has reacted with a chemical reagent.
This is often done to protect these chemical amine and acid
functions of the amino acid in a subsequent reaction or to give
special properties to the amino acids, like improved solubility.
Examples of such chemical modifications are benzyloxycarbonyl,
aminobutyric acid, butyl ester, and pyroglutamic acid. More
examples of common modifications of amino acids and small amino
acid fragments can be found in the Bachem, 1996, Peptides and
Biochemicals Catalog.
[0041] One polyamino acid is polylysine, alternatively polylysines
or polyamino acids where more than 50% of the amino acids are
lysine, since the primary amine function in the side chain of the
lysine is the most reactive amine of all amino acids. One polyamino
acid has a molecular weight of 500 to 10,000,000, alternatively
between 2000 and 25,000.
[0042] The polyamino acid can be cross linked. The cross linking
can be obtained for example by condensation of the amine group in
the side chain of the amino acid like lysine with the carboxyl
function on the amino acid or with protein cross linkers like PEG
derivatives. The cross linked polyamino acids still need to have
free primary and/or secondary amino groups left for neutralization.
Cross linked polyamino acid has a molecular weight of 20,000 to
10,000,000; alternatively between 200,000 and 2,000,000.
[0043] The polyamino acid or the amino acid can be co-polymerized
with other reagents like for instance with acids, amides, acyl
chlorides, aminocaproic acid, adipic acid, ethylhexanoic acid,
caprolactam, or mixtures thereof. The molar ratio used in these
copolymers ranges from 1:1 (reagent/amino acid (lysine)) to 1:20,
alternatively from 1:1 to 1:10. The polyamino acid like polylysine
can be unethoxylated or partially ethoxylated so long as the
requisite amount of primary amine remains in the polymer.
[0044] e. Dendrimers
[0045] Also useful amine based compounds are polypropylenimine
dendrimers and the commercially available Starburst.RTM.
polyamidoamines (PAMAM) dendrimers, generation G0-G10 from
Dendritech and the dendrimers Astromols.RTM., generation 1-5 from
DSM being DiAminoButane PolyAmine DAB (PA)x dendrimers with
x=2.sup.n.times.4 and n being generally comprised between 0 and
4.
[0046] f. PEIs
[0047] In one embodiment, the malodor binding polymer is a PEI. It
has been surprisingly discovered that amine based polymers at a pH
of about 4 to about 8, alternatively above 5 to about 8,
alternatively 7 can neutralize amine based odors. PEIs have the
following general formula:
--(CH2-CH2-NH)n-; n=10-105
[0048] Homopolymeric PEIs are branched, spherical polyamines with a
well defined ratio of primary, secondary and tertiary amine
functions. They are best described in the following partial
structural formula:
##STR00001##
[0049] The chemical structure of homopolymeric PEIs follows a
simple principle: one amine function--two carbons.
[0050] The freshening composition may comprise a homopolymeric
polyethylenimine having a molecular weight of about 800 to about
2,000,000, alternatively about 1,000 to about 2,000,000,
alternatively about 1,200 to about 25,000, alternatively about
1,300 to about 25,000, alternatively about 2,000 to about 25,000,
alternatively about 10,000 to about 2,000,000, alternatively about
25,000 to about 2,000,000, alternatively about 25,000. Exemplary
homopolymeric PEIs include those that are commercially available
under the tradename Lupasol.RTM. from BASF. Lupasol products are
usually obtained through polymerization of the ethylenimine
monomer. The ethylenimine monomer has totally reacted in the
polymer matrix. Suitable Lupasol products include Lupasol FG (MW
800), G20wfv (MW 1300), PR8515 (MW 2000), WF (MW 25,000), FC (MW
800), G20 (MW 1300), G35 (MW 1200), G100 (MW 2000), HF (MW 25,000),
P (MW 750,000), PS (MW 750,000), SK (MW 2,000,000), SNA (MW
1,000,000).
[0051] In some embodiments, the freshening composition comprises
Lupasol HF or WF (MW 25,000), P (MW 750,000), PS (MW 750,000), SK
(MW 2,000,000), 620wfv (MW 1300) or PR 1815 (MW 2000), or Epomin
SP-103, Epomin SP-110, Epomin SP-003, Epomin SP-006, Epomin SP-012,
Epomin SP-018, Epomin SP-200, or partially alkoxylated
polyethyleneimine, like polyethyleneimine 80% ethoxylated from
Aldrich. In one embodiment, the freshening composition contains
Lupasol WF (MW 25,000).
[0052] Also suitable amine based compounds for use in the
freshening composition are modified PEIs, partially alkylated
polyethylene polymers, PEIs with hydroxyl groups,
1,5-pentanediamine, 1,6-hexanediamine, 1,3 pentanediamine,
3-dimethylpropanediamine, 1,2-cyclohexanediamine,
1,3-bis(aminomethyl)cyclohexane, tripropylenetetraamine, bis
(3-aminopropyl)piperazine, dipropylenetriamine,
tris(2-aminoethylamine), tetraethylenepentamine,
bishexamethylenetriamine, bis(3-aminopropyl)
1,6-hexamethylenediamine, 3,3'-diamino-N-methyldipropylamine,
2-methyl-1,5-pentanediamine,
N,N,N',N'-tetra(2-aminoethyl)ethylenediamine,
N,N,N',N'-tetra(3-aminopropyl)-1,4-butanediamine,
pentaethylhexamine, 1,3-diamino-2-propyl-tert-butylether,
isophorondiamine, 4,4',-diaminodicyclohylmethane,
N-methyl-N-(3-aminopropyl)ethanolamine, spermine, spermidine,
1-piperazineethaneamine, 2-(bis(2-aminoethyl)amino)ethanol,
ethoxylated N-(tallowalkyl)trimethylene
diamines,polyloxy(methyl-1,2-ethanediyl)],
.alpha.-(2-aminomethyl-ethoxy)- (=C.A.S No. 9046-10-0);
polyloxy(methyl-1,2-ethanediyl)],
.alpha.-hydro-)-.omega.-(2-aminomethylethoxy)-, ether with
2-ethyl-2-(hydroxymethyl)-1,3-propanediol (=C.A.S. No. 39423-51-3);
commercially available under the tradename Jeffamines T-403, D-230,
D-400, D-2000; 2,2',2''-triaminotriethylamine;
2,2'-diamino-diethylamine; 3,3'-diamino-dipropylamine, 1,3 bis
aminoethyl-cyclohexane commercially available from Mitsubishi, and
the C12 Sternamines commercially available from Clariant like the
C12 Sternamin(propylenamine).sub.n with n=3/4.
[0053] In one embodiment, the malodor binding polymer may be used
in an effective amount to provide a reduction of microbes on fabric
and/or in the air. When using a malodor binding polymer, an
effective amount reduces microbes by at least 1 log difference as
compared to a composition lacking the malodor binding polymer. This
difference is then attributed to the use of the malodor binding
polymer and not the inherent variability in the microbial
species.
[0054] Suitable levels of malodor binding polymer are from about
0.01% to about 2%, alternatively from about 0.01% to about 1%,
alternatively about 0.01% to about 0.8%, alternatively about 0.01%
to about 0.6%, alternatively about 0.01% to about 0.1%,
alternatively about 0.01% to about 0.07%, alternatively about
0.07%, by weight of the freshening composition. Compositions with
higher amount of malodor binding polymer may make fabrics
susceptible to soiling and/or leave unacceptable visible stains on
fabrics as the solution evaporates off of the fabric.
[0055] B. Malodor Counteractants
[0056] The freshening composition may utilize one or more malodor
counteractants. Malodor counteractants may include components which
lower the vapor pressure of odorous compounds, solubilize malodor
compounds, physically entrap odors (e.g. flocculate or
encapsulate), physically bind odors, or physically repel odors from
binding to inanimate surfaces. For example, aliphatic aldehydes
react with amine odors, such as fish and cigarette odors. When used
in combination with the malodor binding polymer, the freshening
composition may neutralize a broader range of malodor causing
materials which, in turn, further reduces malodors in the air or on
inanimate surfaces.
[0057] 1. Aliphatic aldehydes
[0058] In one embodiment, the freshening composition comprises a
perfume mixture having one or more fabric-safe, non-yellowing
aliphatic aldehydes. Certain types of aldehydes that predominately
comprise a straight chain aliphatic backbone will not discolor
fabrics, unlike products that utilize types of aldehydes that
contain multiple double bonds and benzene rings. The following
table illustrates the selection of aldehydes to avoid fabric
yellowing.
TABLE-US-00001 Fadometer Test on treated Fabric (0.75 grams of
product are pipetted onto a 4 inch .times. 4 inch (10 cm .times. 10
cm) swatch which is then subjected to 5 hours of exposure to
simulated sunlight using a SUNTEST CPS+ model Fadometer supplied by
Atlas, Chicago, Illinois, Aldehyde Solution Tested USA.
Control--untreated fabric swatch No yellowing 1000 ppm amylic
cinnamic Yellowish brown aldehyde (aromatic) 1000 ppm citronellal
(aromatic) Yellowish brown 1000 ppm citral aldehyde No yellowing
(aliphatic) 1000 ppm lauric aldehyde No yellowing (aliphatic)
[0059] Examples of suitable aliphatic aldehydes are R--COH where R
is saturated C.sub.7 to C.sub.22 linear and/or branched with no
more than two double bonds. Examples of suitable aliphatic
aldehydes are bourgeonal, citral, citronellyl oxyacetaldehyde,
cymal, decyl aldehyde, helional, hexyl cinnamic aldehyde, lauric
aldehyde, ligustral, lyral, melonal, methyl dihydro jasmonate,
methyl nonyl acetaldehyde, methyl phenyl carbinyl acetate, nonyl
aldehyde, octyl aldehyde, oxane, P. T. bucinal, polysantol,
rhubafuran, tripal, or mixtures thereof.
[0060] In one embodiment, the freshening composition includes at
least one aliphatic aldehyde selected from the group consisting of:
bourgeonal, citral, citronellyl oxyacetaldehyde, cymal, decyl
aldehyde, helional, hexyl cinnamic aldehyde, lauric aldehyde,
ligustral, lyral, melonal, methyl dihydro jasmonate, methyl nonyl
acetaldehyde, methyl phenyl carbinyl acetate, nonyl aldehyde, 2,
6-nonadien-1-al, octyl aldehyde, oxane, P.T. bucinal, polysantol,
rhubafuran, tripal, and mixtures thereof.
[0061] In another embodiment, the freshening composition includes
at least one aliphatic aldehyde selected from the group consisting
of: burgeonal, cymal, hexyl cinnamic aldehyde, mmethyl dihydro
jasmonate, methyl nonyl acetaldehyde, P.T. bucinal, and mixtures
therof.
[0062] The aliphatic aldehydes may be present in an amount from
about 0.001% to about 10%, alternatively from about 0.001% to about
5%, alternatively from about 0.01% to about 1%, alternatively from
about 0.02% to about 1%, alternatively from about 0.02% to about
0.5%, alternatively from about 0.02% to about 0.06%, alternatively
about 0.06%, by weight of the freshening composition.
[0063] In addition to aliphatic aldehydes, the freshening
composition may also include perfume materials for their scent
experience including enones, ketones, ionones including ionone
alpha, ionone beta, ionone gamma methyl, or mixtures thereof.
Suitable perfume materials are discussed in U.S. Pat. No.
5,714,137. The freshening composition may contain an effective
amount of perfume to provide the freshening fragrance when first
sprayed, some lingering fragrance, and some extra fragrance to be
released upon fabric rewetting. It may be desirable for the
aliphatic aldehydes to have virtually no negative impact on the
desired perfume character.
[0064] Certain malodor counteractants may be odoriferous and
negatively impact the overall character of the fragrance. In this
case, a perfume/malodor counteractant premix is formed such that
the perfume raw materials used are selected to neutralize any odor
of the malodor counteractants. This odor neutralized premix can
then be added to a parent perfume mixture without affecting the
character of the parent fragrance. This permits the malodor
counteractants to be used broadly with a large variety of fragrance
types.
[0065] The following are non-limiting examples of perfume
formulations that include fabric-safe malodor counteractants.
(1) Pine
TABLE-US-00002 [0066] Material Name Amount Rosemary 10.00 Spike
Lavender 10.00 Lavandin Grosso 5.00 Spruce (conf.-manh) 5.00
Camphor Gum 5.00 Melonal 0.30 Eucalyptol 15.00 Iso Menthone 15.00
Iso Bornyl Acetate 21.70 Ionone Beta 8.00 Iso E Super 5.00
100.00
(2) Ozonic
TABLE-US-00003 [0067] Material Name Amount Xi Aldehyde 8.00 2' 6
Nonadienol 10% In Dpg 5.00 Helional 13.00 Hydroxycitronellal 11.50
Calone 1951 0.50 2' 6-Nonadien-1-al/10% In Dpg 5.00 Lyral 20.00
Melonal 1.00 Iso Menthone 10.00 Floralozone 10.00 Bourgeonal 10.00
Delta Muscenone 962191 1.00 Habanolide 100% 5.00 100.00
(3) Fruity
TABLE-US-00004 [0068] Material Name Amount Fruitate 5.00 Orange
Terpenes 13.00 Ethyl Acetoacetate 3.00 2' 6 Nonadienol 10% In Dpg
1.00 Ethyl Acetate 3.00 Benzaldehyde 2.00 Prenyl Acetate 8.00
Benzyl Acetate 15.00 2' 6-Nonadien-1-al/10% In Dpg 1.00
Ethyl-2-methyl Butyrate 8.00 Amyl Acetate 3.00 Cis 3 Hexenyl
Acetate 3.00 Methyl Dihydro Jasmonate 10.00 Ligustral 5.00 Melonal
1.00 Ethyl 2 Methyl Pentanoate 8.00 Hexyl Acetate 8.00 Habanolide
100% 3.00 100.00
(4) Citrus
TABLE-US-00005 [0069] Material Name Amount Orange Terpenes 20.00
Lemon Terpenes X5 Fold 20.00 Lime Oil Cf-8-1285-1 (conf.-berje)
10.00 Grapefruit Phase C--Ref. N*12245 20.00 Italian Orange Phase
Oil 22.90 Delta Muscenone 962191 0.50 Oxane 0.30 Iso Menthone 1.00
Rhubafuran 0.30 Habanolide 100% 5.00 100.00
(5) Floral
TABLE-US-00006 [0070] Material Name Amount Spike Lavender 5.00
Rosemary 5.00 Helional 10.00 Hydroxycitronellal 10.00 Benzyl
Acetate 9.30 Lyral 20.00 Ligustral 2.00 Melonal 0.20 Eucalyptol
2.00 Iso Menthone 8.00 Bourgeonal 20.00 Undecavertol 3.00 Delta
Muscenone 962191 0.50 Habanolide 100% 5.00 100.00
[0071] In certain cases, fabrics that are laundered will have
residual brighteners deposited from detergents with which they are
washed. Therefore, it may be desirable for the aliphatic aldehydes
to be compatible with brighteners so that the freshening
composition will not discolor any fabrics with which it comes into
contact. A number of the examples above are compatible with
brighteners.
[0072] 2. Low Molecular Weight Polyols
[0073] Low molecular weight polyols with relatively high boiling
points, as compared to water, such as ethylene glycol, diethylene
glycol, triethylene glycol, propylene glycol, dipropylene glycol,
and/or glycerine may be utilized as a malodor counteractant for
improving odor neutralization of the freshening composition of the
present invention. Some polyols, e.g., dipropylene glycol, are also
useful to facilitate the solubilization of some perfume ingredients
in the composition of the present invention.
[0074] The glycol used in the freshening composition of the present
invention may be glycerine, ethylene glycol, propylene glycol,
dipropylene glycol, polyethylene glycol, propylene glycol methyl
ether, propylene glycol phenyl ether, propylene glycol methyl ether
acetate, propylene glycol n-butyl ether, dipropylene glycol n-butyl
ether, dipropylene glycol n-propyl ether, ethylene glycole phenyl
ether, diethylene glycol n-butyl ether, dipropylene glycol n-butyl
ether, diethylene glycol mono butyl ether, dipropylene glycol
methyl ether, tripropylene glycol methyl ether, tripropylene glycol
n-butyl ether, other glycol ethers, or mixtures thereof. In one
embodiment, the glycol used is ethylene glycol, propylene glycol,
or mixtures thereof. In another embodiment, the glycol used is
diethylene glycol.
[0075] Typically, the low molecular weight polyol is added to the
composition of the present invention at a level of from about 0.01%
to about 5%, by weight of the composition, alternatively from about
0.05% to about 1%, alternatively from about 0.1% to about 0.5%, by
weight of the composition. Compositions with higher concentrations
may make fabrics susceptible to soiling and/or leave unacceptable
visible stains on fabrics as the solution evaporates off of the
fabric. The weight ratio of low molecular weight polyol to the
malodor binding polymer is from about 500:1 to about 4:1,
alternatively from about 1:100 to about 25:1, alternatively from
about 1:50 to about 4:1, alternatively about 4:1.
[0076] 3. Cyclodextrin
[0077] In some embodiments, the freshening composition may include
solubilized, water-soluble, uncomplexed cyclodextrin. As used
herein, the term "cyclodextrin" includes any of the known
cyclodextrins such as unsubstituted cyclodextrins containing from
six to twelve glucose units, especially, alpha-cyclodextrin,
beta-cyclodextrin, gamma-cyclodextrin and/or their derivatives
and/or mixtures thereof. The alpha-cyclodextrin consists of six
glucose units, the beta-cyclodextrin consists of seven glucose
units, and the gamma-cyclodextrin consists of eight glucose units
arranged in a donut-shaped ring. The specific coupling and
conformation of the glucose units give the cyclodextrins a rigid,
conical molecular structure with a hollow interior of a specific
volume. The "lining" of the internal cavity is formed by hydrogen
atoms and glycosidic bridging oxygen atoms, therefore this surface
is fairly hydrophobic. The unique shape and physical-chemical
property of the cavity enable the cyclodextrin molecules to absorb
(form inclusion complexes with) organic molecules or parts of
organic molecules which can fit into the cavity. Many perfume
molecules can fit into the cavity.
[0078] Cyclodextrin molecules are described in U.S. Pat. No.
5,714,137, and U.S. Pat. No. 5,942,217. Suitable levels of
cyclodextrin are from about 0.1% to about 5%, alternatively from
about 0.2% to about 4%, alternatively from about 0.3% to about 3%,
alternatively from about 0.4% to about 2%, by weight of the
freshening composition. Freshening compositions with higher
concentrations can make fabrics susceptible to soiling and/or leave
unacceptable visible stains on fabrics as the solution evaporates
off of the fabric. The latter is especially a problem on thin,
colored, synthetic fabrics. In order to avoid or minimize the
occurrence of fabric staining, the fabric may be treated at a level
of less than about 5 mg of cyclodextrin per mg of fabric,
alternatively less than about 2 mg of cyclodextrin per mg of
fabric.
[0079] C. Buffering Agent
[0080] The freshening composition of the present invention includes
a buffering agent which may be a dibasic acid, carboxylic acid, or
a dicarboxylic acid like maleic acid. The acid may be sterically
stable, and used in this composition solely for maintaining the
desired pH. The freshening composition may have a pH from about 3
to about 8, alternatively from about 4 to about 7, alternatively
from about 5 to about 8, alternatively from about 6 to about 8,
alternatively about 6 to about 7, alternatively about 7,
alternatively about 6.5.
[0081] Carboxylic acids such as citric acid may act as metal ion
chelants and can form metallic salts with low water solubility. As
such, in some embodiments, the freshening composition is
essentially free of citric acids. The buffer can be alkaline,
acidic or neutral.
[0082] Other suitable buffering agents for freshening compositions
of this invention include biological buffering agents. Some
examples are nitrogen-containing materials, sulfonic acid buffers
like 3-(N-morpholino)propanesulfonic acid (MOPS) or
N-(2-Acetamido)-2-aminoethanesulfonic acid (ACES), which have a
near neutral 6.2 to 7.5 pKa and provide adequate buffering capacity
at a neutral pH. Other examples are amino acids such as lysine or
lower alcohol amines like mono-, di-, and tri-ethanolamine Other
nitrogen-containing buffering agents are tri(hydroxymethyl)amino
methane (HOCH2)3CNH3 (TRIS), 2-amino-2-ethyl-1,3-propanediol,
2-amino-2-methyl-propanol, 2-amino-2-methyl-1,3-propanol, disodium
glutamate, N-methyl diethanolamide,
2-dimethylamino-2-methylpropanol (DMAMP),
1,3-bis(methylamine)-cyclohexane, 1,3-diamino-propanol
N,N'-tetra-methyl-1,3-diamino-2-propanol,
N,N-bis(2-hydroxyethyl)glycine (bicine) and N-tris
(hydroxymethyl)methyl glycine (tricine). Mixtures of any of the
above are also acceptable.
[0083] The freshening compositions may contain at least about 0%,
alternatively at least about 0.001%, alternatively at least about
0.01%, by weight of the composition, of a buffering agent. The
composition may also contain no more than about 1%, alternatively
no more than about 0.75%, alternatively no more than about 0.5%, by
weight of the composition, of a buffering agent.
[0084] D. Solubilizer
[0085] The freshening composition of the present invention may
contain a solubilizing aid to solubilize any excess hydrophobic
organic materials, particularly any perfume materials, and also
optional ingredients (e.g., insect repelling agent, antioxidant,
etc.) which can be added to the composition, that are not readily
soluble in the composition, to form a clear solution. A suitable
solubilizing aid is a surfactant, such as a no-foaming or
low-foaming surfactant. Suitable surfactants are nonionic
surfactants, cationic surfactants, amphoteric surfactants,
zwitterionic surfactants, and mixtures thereof.
[0086] In some embodiments, the freshening composition contains
nonionic surfactants, cationic surfactants, and mixtures thereof.
In one embodiment, the freshening composition contains hydrogenated
castor oil. One suitable hydrogenated castor oil that may be used
in the present composition is Basophor.TM., available from
BASF.
[0087] Compositions containing anionic surfactants and/or detergent
surfactants may make fabrics susceptible to soiling and/or leave
unacceptable visible stains on fabrics as the solution evaporates
off of the fabric. In some embodiments, the freshening composition
is free of anionic surfactants and/or detergent surfactants.
[0088] When the solubilizing agent is present, it is typically
present at a level of from about 0.01% to about 3%, alternatively
from about 0.05% to about 1%, alternatively from about 0.01% to
about 0.05%, by weight of the freshening composition. Freshening
compositions with higher concentrations may make fabrics
susceptible to soiling and/or leave unacceptable visible stains on
fabrics as the solution evaporates off of the fabric.
[0089] E. Antimicrobial Compounds
[0090] The freshening composition of the present invention may
include an effective amount of a compound for reducing microbes in
the air or on inanimate surfaces. Antimicrobial compounds are
effective on gram negative and gram positive bacteria and fungi
typically found on indoor surfaces that have contacted human skin
or pets such as couches, pillows, pet bedding, and carpets. Such
microbial species include Klebsiella pneumoniae, Staphylococcus
aureus, Aspergillus niger, Klebsiella pneumoniae, Steptococcus
pyogenes, Salmonella choleraesuis, Escherichia coil, Trichophyton
mentagrophytes, and Pseudomonoas aeruginosa. In some embodiments,
the antimicrobial compounds are also effective on viruses such
H1-N1, Rhinovirus, Respiratory Syncytial, Poliovirus Type 1,
Rotavirus, Influenza A, Herpes simplex types 1 & 2, Hepatitis
A, and Human Coronavirus.
[0091] Antimicrobial compounds suitable in the freshening
composition of the present invention can be any organic material
which will not cause damage to fabric appearance (e.g.,
discoloration, coloration such as yellowing, bleaching).
Water-soluble antimicrobial compounds include organic sulfur
compounds, halogenated compounds, cyclic organic nitrogen
compounds, low molecular weight aldehydes, quaternary compounds,
dehydroacetic acid, phenyl and phenoxy compounds, or mixtures
thereof.
[0092] In one embodiment, a quaternary compound is used. Examples
of commercially available quaternary compounds suitable for use in
the freshening composition is Barquat available from Lonza
Corporation; and didecyl dimethyl ammonium chloride quat under the
trade name Bardac.RTM. 2250 from Lonza Corporation.
[0093] The antimicrobial compound may be present in an amount from
about 500 ppm to about 7000 ppm, alternatively about 1000 ppm to
about 5000 ppm, alternatively about 1000 ppm to about 3000 ppm,
alternatively about 1400 ppm to about 2500 ppm, by weight of the
freshening composition.
[0094] F. Preservatives
[0095] The freshening composition of the present invention may
include a preservative. The preservative is included in the present
invention in an amount sufficient to prevent spoilage or prevent
growth of inadvertently added microorganisms for a specific period
of time, but not sufficient enough to contribute to the odor
neutralizing performance of the freshening composition. In other
words, the preservative is not being used as the antimicrobial
compound to kill microorganisms on the surface onto which the
composition is deposited in order to eliminate odors produced by
microorganisms. Instead, it is being used to prevent spoilage of
the freshening composition in order to increase the shelf-life of
the composition.
[0096] The preservative can be any organic preservative material
which will not cause damage to fabric appearance, e.g.,
discoloration, coloration, bleaching. Suitable water-soluble
preservatives include organic sulfur compounds, halogenated
compounds, cyclic organic nitrogen compounds, low molecular weight
aldehydes, parabens, propane diaol materials, isothiazolinones,
quaternary compounds, benzoates, low molecular weight alcohols,
dehydroacetic acid, phenyl and phenoxy compounds, or mixtures
thereof.
[0097] Non-limiting examples of commercially available
water-soluble preservatives for use in the present invention
include a mixture of about 77%
5-chloro-2-methyl-4-isothiazolin-3-one and about 23%
2-methyl-4-isothiazolin-3-one, a broad spectrum preservative
available as a 1.5% aqueous solution under the trade name
Kathon.RTM. CG by Rohm and Haas Co.; 5-bromo-5-nitro-1,3-dioxane,
available under the tradename Bronidox L.RTM. from Henkel;
2-bromo-2-nitropropane-1,3-diol, available under the trade name
Bronopol.RTM. from Inolex; 1,1'-hexamethylene
bis(5-(p-chlorophenyl)biguanide), commonly known as chlorhexidine,
and its salts, e.g., with acetic and digluconic acids; a 95:5
mixture of
1,3-bis(hydroxymethyl)-5,5-dimethyl-2,4-imidazolidinedione and
3-butyl-2-iodopropynyl carbamate, available under the trade name
Glydant Plus.RTM. from Lonza;
N-[1,3-bis(hydroxymethyl)2,5-dioxo-4-imidazolidinyl]-N,N'-bis(hydroxy-met-
hyl)urea, commonly known as diazolidinyl urea, available under the
trade name Germall.RTM. II from Sutton Laboratories, Inc.;
N,N''-methylenebis{N'-[1-(hydroxymethyl)-2,5-dioxo-4-imidazolindinyl]urea-
}, commonly known as imidazolidinyl urea, available, e.g., under
the trade name Abiol.RTM. from 3V-Sigma, Unicide U-13.RTM. from
Induchem, Germall 115.RTM. from Sutton Laboratories, Inc.;
polymethoxy bicyclic oxazolidine, available under the trade name
Nuosept.RTM. C from Hills America; formaldehyde; glutaraldehyde;
polyaminopropyl biguanide, available under the trade name Cosmocil
CQ.RTM. from ICI Americas, Inc., or under the trade name
Mikrokill.RTM. from Brooks, Inc; dehydroacetic acid; and
benzsiothiazolinone available under the trade name Koralone.TM.
B-119 from Rohm and Hass Corporation.
[0098] Suitable levels of preservative are from about 0.0001% to
about 0.5%, alternatively from about 0.0002% to about 0.2%,
alternatively from about 0.0003% to about 0.1%, by weight of the
freshening composition.
[0099] G. Wetting Agent
[0100] The freshening composition may include a wetting agent that
provides a low surface tension that permits the composition to
spread readily and more uniformly on hydrophobic surfaces like
polyester and nylon. It has been found that the aqueous solution,
without such a wetting agent will not spread satisfactorily. The
spreading of the composition also allows it to dry faster, so that
the treated material is ready to use sooner. Furthermore, a
composition containing a wetting agent may penetrate hydrophobic,
oily soil better for improved malodor neutralization. A composition
containing a wetting agent may also provide improved "in-wear"
electrostatic control. For concentrated compositions, the wetting
agent facilitates the dispersion of many actives such as
antimicrobial actives and perfumes in the concentrated aqueous
compositions.
[0101] Nonlimiting examples of wetting agents include block
copolymers of ethylene oxide and propylene oxide. Suitable block
polyoxyethylene-polyoxypropylene polymeric surfactants include
those based on ethylene glycol, propylene glycol, glycerol,
trimethylolpropane and ethylenediamine as the initial reactive
hydrogen compound. Polymeric compounds made from a sequential
ethoxylation and propoxylation of initial compounds with a single
reactive hydrogen atom, such as C.sub.12-18 aliphatic alcohols, are
not generally compatible with the cyclodextrin. Certain of the
block polymer surfactant compounds designated Pluronic.RTM. and
Tetronic.RTM. by the BASF-Wyandotte Corp., Wyandotte, Mich., are
readily available.
[0102] Nonlimiting examples of cyclodextrin-compatible wetting
agents of this type are described in U.S. Pat. No. 5,714,137 and
include the Silwet surfactants available from Momentive Performance
Chemical, Albany, N.Y. Exemplary Silwet surfactants are as
follows:
TABLE-US-00007 Name Average MW L-7608 600 L-7607 1,000 L-77 600
L-7605 6,000 L-7604 4,000 L-7600 4,000 L-7657 5,000 L-7602
3,000;
and mixtures thereof.
[0103] H. Aqueous Carrier
[0104] The freshening composition of the present invention may
include an aqueous carrier. The aqueous carrier which is used may
be distilled, deionized, or tap water. Water may be present in any
amount for the composition to be an aqueous solution. In some
embodiments, water may be present in an amount of about 85% to
99.5%, alternatively about 90% to about 99.5%, alternatively about
92% to about 99.5%, alternatively about 95%, by weight of said
freshening composition. Water containing a small amount of low
molecular weight monohydric alcohols, e.g., ethanol, methanol, and
isopropanol, or polyols, such as ethylene glycol and propylene
glycol, can also be useful. However, the volatile low molecular
weight monohydric alcohols such as ethanol and/or isopropanol
should be limited since these volatile organic compounds will
contribute both to flammability problems and environmental
pollution problems. If small amounts of low molecular weight
monohydric alcohols are present in the composition of the present
invention due to the addition of these alcohols to such things as
perfumes and as stabilizers for some preservatives, the level of
monohydric alcohol may be less than about 6%, alternatively less
than about 3%, alternatively less than about 1%, by weight of the
freshening composition.
[0105] I. Other Optional Ingredients
[0106] Adjuvants can be optionally added to the freshening
composition herein for their known purposes. Such adjuvants
include, but are not limited to, water soluble metallic salts,
antistatic agents, insect and moth repelling agents, colorants,
antioxidants, and mixtures thereof.
II. Method of Making
[0107] The freshening composition can be made in any suitable
manner known in the art. All of the ingredients can simply be mixed
together. In certain embodiments, it may be desirable to make a
concentrated mixture of ingredients and dilute by adding the same
to an aqueous carrier before dispersing the composition into the
air or on an inanimate surface. In another embodiment, the malodor
binding polymer may be dispersed in one vessel containing deionized
water and ethanol, and low molecular polyols. To this vessel, then,
the buffer is added until fully dispersed and visually dissolved.
In a separate vessel, the solubilizer and perfume are mixed until
homogenous. The solution of solubilizer and perfume are then added
to the first mixing vessel, and mixed until homogenous.
III. Methods of Use
[0108] The freshening composition of the present invention can be
used by dispersing, e.g., by placing the aqueous solution into a
dispensing means, such as a spray dispenser and spraying an
effective amount into the air or onto the desired surface or
article. An effective amount as defined herein means an amount
sufficient to neutralize malodor to the point that it is not
discernible by the human sense of smell yet not so much as to
saturate or create a pool of liquid on an article or surface and so
that, when dry, there is no visual deposit readily discernible.
Dispersing can be achieved by using a spray device, a roller, a
pad, etc.
[0109] The present invention encompasses the method of dispersing
an effective amount of the composition for reducing malodor onto
household surfaces. The household surfaces are selected from the
group consisting of countertops, cabinets, walls, floors, bathroom
surfaces, and kitchen surfaces.
[0110] The present invention encompasses the method of dispersing a
mist of an effective amount of the composition for reducing malodor
onto fabric and/or fabric articles. The fabric and/or fabric
articles include, but are not limited to, clothes, curtains,
drapes, upholstered furniture, carpeting, bed linens, bath linens,
tablecloths, sleeping bags, tents, car interior, e.g., car carpet,
fabric car seats, etc.
[0111] The present invention encompasses the method of dispersing a
mist of an effective amount of the composition for reducing malodor
impression onto and into shoes wherein the shoes are not sprayed to
saturation.
[0112] The present invention encompasses the method of dispersing a
mist of an effective amount of the composition for reducing malodor
impression onto shower curtains.
[0113] The present invention relates to the method of dispersing a
mist of an effective amount of the composition for reducing malodor
impression onto and/or into garbage cans and/or recycling bins.
[0114] The present invention relates to the method of dispersing a
mist of an effective amount of the composition for reducing malodor
impression into the air to neutralize malodor.
[0115] The present invention relates to the method of dispersing a
mist of an effective amount of the composition for reducing malodor
impression into and/or onto major household appliances including,
but not limited to, refrigerators, freezers, washing machines,
automatic dryers, ovens, microwave ovens, dishwashers, etc., to
neutralize malodor.
[0116] The present invention relates to the method of dispersing a
mist of an effective amount of the composition for reducing malodor
impression onto cat litter, pet bedding and pet houses to
neutralize malodor.
[0117] The present invention relates to the method of dispersing a
mist of an effective amount of the composition for reducing malodor
impression onto household pets to neutralize malodor.
EXAMPLES
Malodor Reduction
[0118] Table 1 show non-limiting examples of freshening
compositions according to the present invention.
TABLE-US-00008 TABLE 1 V I II III IV (Control) VI VII VIII Lupasol
WF 0.070 0.070 0.015 0.035 0 0.035 0.0525 0.07 CAS 9002-98-6
Diethylene 0.175 0.175 0.070 0.175 0.175 0.175 0.170 0.175 Glycol
Perfume mixture 0.2102 0.4880 0.020 0.236 0.655 0.655 0.655 0.655
comprising (0% (0.012 (0.012 (0.012 (0.012 aliphatic alde- alde-
alde- alde- alde- aldehydes hydes) hydes) hydes) hydes) hydes)
Hydroxypropyl 0.630 0.630 0.630 0 0.630 0.630 0.630 0.630 Beta CD
Basophor ELH 0 0.050 0.050 0.050 0.050 0.050 0.050 0.050 60 Uniquat
2250 0 0.060 0 0.060 0.060 0.060 0.060 0.060 Bardac 2250J 0.139
0.100 0 0 0 0 0 Silwet L-7600 0.100 0.100 0.175 0.100 0.100 0.100
0.100 0.100 Citric Acid 0.045 0.015 0.015 0.015 0.015 0.015 0.15
0.015 Maleic Acid 0 0.050 0.060 0.050 0.050 0.050 0.050 0.050 CAS
110-16-7 ACES 0.100 0 0 0 0 0 0 0 Sodium 0 0 0 0.020 0.020 0.020
0.020 0.020 Hydroxide Koralone B-119 0 0.0150 0 0.015 0.015 0.015
0.015 0.015 Ethanol 3.000 3.000 3.000 3.000 3.000 3.000 3.000 3.000
Deionized 95.571 95.347 95.865 96.264 95.318 95.180 95.095 95.148
Water Total 100 100 100 100 100
[0119] Formulations VI, VII, and VIII in Table 1 are prepared and
compared to Control Formulation V, a composition containing no
malodor binding polymer, for their effect on malodor. FIG. 1 shows
that when including a malodor binding polymer in a freshening
composition in accordance with the present invention, aldehydic
malodor evaporating off the treated fabric decreases.
[0120] Fabric samples are infused with the malodor of interest. For
grease infusion, place 8 ounces of grease in a Presto.TM. electric
skillet and cover with the skillet lid. Place the skillet in a 30
gallon metal garbage can. Run the electric cord from the skillet
through a 1.5 inch hole in the garbage can. Heat the skillet to
121.degree. C. and allow it to equilibrate for 15 minutes. Remove
the lid. Suspend 8 inch by 8 inch fabric swatches from the metal
clips on a carousel in the garbage can lid. Measured from the
bottom of the swatches, the distance to the top of the skillet is 8
inches. Place lid on garbage can and manually turn the carousel 15
rotations per minute for a period of 40 minutes. After infusion,
spray the swatches with the respective freshening compositions that
are to be tested. The spray for each swatch consists of two full
strokes of the trigger sprayer bottle. The bottle is held 6 inches
away from the fabric and the spray is centered on the fabric
Immediately after treatment, cut each swatch in half, roll, and
place each into a 125 mL headspace vial. Seal the vials. Allow the
vials to equilibrate for at least 2 hours at 100.degree. C. and
then analyze by sampling each vial using a PDMS SPME fiber and
analyze by GC/MS. Malodor components, previously identified, are
then tracked through all the samples. Data is compiled of total
area count of the cumulative area counts of the individual
peaks.
Microbe Reduction
[0121] Table 2 show non-limiting examples of freshening
compositions according to the present invention.
TABLE-US-00009 TABLE 2 IX (Control) X Lupasol WF 0 0.07 CAS
9002-98-6 Diethylene Glycol 0.25 0.25 Perfume mixture 0.02 0.02
comprising aliphatic (0.002 aldehydes) (0.002 aldehydes) aldehydes
Hydroxypropyl Beta CD 0.63 0.63 Basophor ELH 60 0.15 0.15 Uniquat
2250 0 0 Bardac 2250J 0.5 0.5 Silwet L-7600 0.1 0.1 Citric Acid 0 0
Maleic Acid 0 0 CAS 110-16-7 ACES 0.1 0.1 Sodium Hydroxide 0.006
0.006 Koralone B-119 0 0 Ethanol 3.000 3.000 Deionized Water 95.244
95.174 Total 100 100
[0122] Formulation IX, the control formulation containing no
malodor binding polymer, and Formulation X are compared for their
effect on microbe reduction. FIG. 2 shows the results of
formulations with and without PEIs when tested for non-residual
fabric sanitizer efficacy against Staphylococcus aureus (ATCC
6538), Aspergillus niger (ATCC 6275), Proteus mirabilis (ATCC 7002)
and Pseudomonas aeruginosa (ATCC 15442).
[0123] Formulation efficacy was assessed by employing a North
American Bactericidal Fabric Spray Test Method that is a
quantitative modification of the AOAC Germicidal Spray Products
Test method (961.02). This method is a recognized test standard in
accordance to U.S. EPA Pesticide Assessment Guidelines Subdivision
G, Series 91-52(b)(1). The referenced AOAC method was applied to
fabric surfaces. Fabric swatches (1.5 inch, 100% blue oxford
cotton) as can be obtained from Testfabrics Inc. were treated with
2 fully depressed sprays of trigger sprayer bottle containing the
respective formulation. A contact time between 10 to 30 minutes at
ambient temperature was chosen as a conservative time estimate for
sprayed fabric surfaces, as provided in Subdivision G, Series 91-1
(b) (4) (i). Any excess liquid is drained off and then transferred
to a jar containing 20 ml neutralizer and/or growth promoting
broth. The jar is mixed by vortexing, followed by sonication in a
Branson Bransonic Ultrasonic Sonicator for 5 minutes. Within 30
minutes of neutralization, the jar is mixed for 2-3 seconds on a
vortex type mixer and serially diluted. All the samples were
incubated (48.+-.4 hours) under the appropriate conditions and
monitored for growth or no growth. Samples are plated and counted
to determine mean log10 reduction.
[0124] All percentages stated herein are by weight unless otherwise
specified. It should be understood that every maximum numerical
limitation given throughout this specification will include every
lower numerical limitation, as if such lower numerical limitations
were expressly written herein. Every minimum numerical limitation
given throughout this specification will include every higher
numerical limitation, as if such higher numerical limitations were
expressly written herein. Every numerical range given throughout
this specification will include every narrower numerical range that
falls within such broader numerical range, as if such narrower
numerical ranges were all expressly written herein.
[0125] The dimensions and values disclosed herein are not to be
understood as being strictly limited to the exact numerical values
recited. Instead, unless otherwise specified, each such dimension
is intended to mean both the recited value and a functionally
equivalent range surrounding that value. For example, a dimension
disclosed as "40 mm" is intended to mean "about 40 mm."
[0126] Every document cited herein, including any cross referenced
or related patent or application, is hereby incorporated herein by
reference in its entirety unless expressly excluded or otherwise
limited. The citation of any document is not an admission that it
is prior art with respect to any invention disclosed or claimed
herein or that it alone, or in any combination with any other
reference or references, teaches, suggests or discloses any such
invention. Further, to the extent that any meaning or definition of
a term in this document conflicts with any meaning or definition of
the same term in a document incorporated by reference, the meaning
or definition assigned to that term in this document shall
govern.
[0127] While particular embodiments of the present invention have
been illustrated and described, it would be obvious to those
skilled in the art that various other changes and modifications can
be made without departing from the spirit and scope of the
invention. It is therefore intended to cover in the appended claims
all such changes and modifications that are within the scope of
this invention.
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