U.S. patent application number 14/420807 was filed with the patent office on 2015-07-30 for novel compositions comprising p-hydroxybenzylamine.
The applicant listed for this patent is DSM ASSETS B.V.. Invention is credited to Christine Mendrok-Edinger, Rainer Voegeli, Peter Wikstroem.
Application Number | 20150208650 14/420807 |
Document ID | / |
Family ID | 46880962 |
Filed Date | 2015-07-30 |
United States Patent
Application |
20150208650 |
Kind Code |
A1 |
Mendrok-Edinger; Christine ;
et al. |
July 30, 2015 |
NOVEL COMPOSITIONS COMPRISING P-HYDROXYBENZYLAMINE
Abstract
The present invention relates to the use of p-hydroxybenzylamine
or a salt thereof as antimicrobial agent as well as to composition
comprising said agent.
Inventors: |
Mendrok-Edinger; Christine;
(Basel, CH) ; Voegeli; Rainer; (Basel, CH)
; Wikstroem; Peter; (Basel, CH) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
DSM ASSETS B.V. |
Heerlen |
|
NL |
|
|
Family ID: |
46880962 |
Appl. No.: |
14/420807 |
Filed: |
August 12, 2013 |
PCT Filed: |
August 12, 2013 |
PCT NO: |
PCT/EP2013/066824 |
371 Date: |
February 10, 2015 |
Current U.S.
Class: |
424/70.1 ;
510/119; 514/645 |
Current CPC
Class: |
A61K 8/41 20130101; A01N
33/24 20130101; A01N 33/04 20130101; A61K 2800/52 20130101; A61K
8/064 20130101; A61Q 19/00 20130101; A61Q 19/10 20130101; A61K
8/042 20130101; A61Q 5/02 20130101; A61Q 5/12 20130101; A61Q 17/005
20130101; A61K 2800/74 20130101; A61Q 1/02 20130101; A61K 8/89
20130101; A61K 8/062 20130101; A61Q 5/006 20130101; A61Q 19/007
20130101 |
International
Class: |
A01N 33/24 20060101
A01N033/24; A61Q 19/00 20060101 A61Q019/00; A61Q 5/12 20060101
A61Q005/12; A61Q 5/02 20060101 A61Q005/02; A61K 8/41 20060101
A61K008/41; A61K 8/89 20060101 A61K008/89 |
Foreign Application Data
Date |
Code |
Application Number |
Sep 3, 2012 |
EP |
12182760.4 |
Claims
1. Use of p-hydroxybenzylamine or a salt thereof as antimicrobial
agent.
2. The use according to claim 1, wherein the antimicrobial agent is
an antifungal and/or antibacterial agent.
3. The use according to claim 2, wherein the antifungal and/or
antibacterial agent is an agent that inhibits the growth of
Escherichia Coli, Pseudomonas aeruginosa, Staphylococcus aureus,
Propionibacterium acnes, Aspergillus brasiliensis and/or Candida
albicans.
4. The use according to claim 1, wherein p-hydroxybenzylamine is
used in the form of its hydrochloride.
5. A method of preventing microbial decay and breakdown of cosmetic
compositions, said method encompassing the addition of 0.001 to 10
wt.-%, based on the total weight of the composition, of
p-hydroxylbenzylamine or a salt thereof into said composition,
6. The method according to claim 5, wherein the amount of
p-hydroxbenzylamine or a salt thereof is selected in the range of
0.005 to 5 wt.-%, preferably in the range of 0.01 to 1 wt.-%, based
on the total weight of the composition.
7. The method according to claim 5, wherein the composition
furthermore comprises water and at least one agent selected from
the group consisting of surfactants, emulsifiers, thickeners and
oils.
8. The method according to claim 7, wherein the oils are silicone
oils.
9. The method according to claim 5, wherein the composition is in
the form of a shampoo preparation, a hair conditioner, an O/W
emulsions, a W/O emulsion or a gel.
10. A cosmetic composition for topical application comprising water
and at least one agent selected from the group consisting of
surfactants, emulsifiers, thickeners, and oils, wherein the
composition furthermore comprises p-hydroxylbenzylamine or a salt
thereof in an amount of 0.001 to 10 wt.-%, in particular in an
amount of 0.005 to 5 wt.-%, such more in particular in an amount of
0.01 to 1 wt.-%, based on the total weight of the composition.
11. The composition according to claim 10, wherein
p-hydroxybenzylamine is used in the form of its hydrochloride.
12. The composition according to claim 10, wherein the composition
is a shampoo preparation, a hair conditioner, an O/W emulsions, a
W/O emulsion or a gel.
13. The composition according to claim 10, wherein the composition
is a topical composition applied to the human skin, scalp and/or
hair.
14. A method of treating the scalp, said method comprising the
steps of contacting the scalp with a rinse off composition in the
form of a shampoo or a conditioner comprising p-hydroxybenzylamine
or a salt thereof followed by rinsing the hair with water.
Description
[0001] The present invention relates to the use of
p-hydroxybenzylamine or a salt thereof as antimicrobial agent as
well as to composition comprising said agent.
[0002] To protect cosmetics against mold and bacteria, most
cosmetic products currently on the market contain preservatives.
While these preservatives protect against bacteria and fungi,
studies have linked daily exposure to many of these substances to
an increased risk of skin irritation, cancer and/or endocrine
problems. Thus, many cosmetic manufactures are searching for
alternatives which don't appear to pose any health risks.
[0003] Surprisingly, it has been found that p-hydroxybenzylamine
exhibits an antimicrobial activity.
[0004] Thus, the present invention relates to the use of
p-hydroxybenzylamine or a salt thereof as antimicrobial agent, i.e.
an agent which exhibits an antimicrobial activity. In particular
the present invention is directed to the use of
p-hydroxybenzylamine or a salt thereof as anti-fungal and/or
anti-bacterial agent, more in particular as an agent for inhibiting
the growth of Escherichia coli (E. coli), Pseudomonas aeruginosa
(P. aeruginosa), Staphylococcus aureus (S. aureus),
Propionibacterium acnes (P. acnes), Aspergillus brasiliensis (A.
brasiliensis) and/or Candida albicans (C. albicans).
[0005] In another embodiment, the invention relates to a method for
killing and/or inhibiting growth of microbial cells, in particular
fungal and/or bacterial cells, said method comprising contacting
said microbial cells with p-hydroxybenzylamine or a salt thereof.
In a preferred embodiment the microbial cells are selected from the
group consisting of E. coli, P. aeruginosa, S. aureus, P. acnes, A.
brasiliensis and C. albicans as well as mixtures thereof.
[0006] In another embodiment the invention relates to a method of
preventing microbial decay and breakdown of cosmetic compositions,
said method encompassing the addition of 0.001 to 10 wt.-% of
p-hydroxylbenzylamine or a salt thereof into said composition. In a
particular embodiment the method also encompasses the step of
appreciating the result. In another particular embodiment, the
cosmetic composition furthermore comprises water and at least one
further agent selected from the group consisting of surfactants,
emulsifiers, thickeners, and oils. Preferred oils are silicone
oils.
[0007] The antimicrobial activity of p-hydroxybenzylamine or a salt
thereof is in particular suitable for preventing decay and
breakdown of cosmetic compositions comprising water and at least
one further agent selected from the group consisting of
surfactants, emulsifiers, thickeners and oils as such compositions
are particular sensitive to microbial growth. Preferred oils are
silicone oils.
[0008] Thus, in another embodiment, the invention is also directed
to cosmetic compositions comprising water and at least one agent
selected from the group consisting of surfactants, emulsifiers,
thickeners and oils, wherein the composition furthermore comprises
p-hydroxylbenzylamine or a salt thereof in an amount of 0.001 to 10
wt.-%, based on the total weight of the composition. Preferably,
the oils are silicone oils. In a particular embodiment, the
composition is free of any hair dying agent, i.e. is not suitable
for dying hair.
[0009] In another embodiment, the antimicrobial activity of
p-hydroxybenzylamine or a salt thereof can be used for the
treatment of dandruff. Thus, the invention also relates to a method
of treating the scalp, said method comprising the steps of
contacting the scalp with a hair care preparation comprising
p-hydroxybenzylamine or a salt thereof, preferably in an amount of
0.001 to 10 wt.-% based on the total weight of the composition. In
a preferred embodiment the method is directed to the treatment of
dandruff. In another preferred embodiment the hair care preparation
is a rinse off composition in the form of a shampoo or a
conditioner. In a further preferred embodiment, the method
furthermore comprises the step of rinsing the hair with water.
[0010] In all embodiments of the present invention
p-hydroxylbenzylamine is preferably used in an amount selected in
the range of about 0.005 to 5 wt.-%, such as in the range of about
0.01 to 1 wt.-%, based on the total weight of the composition.
[0011] The term "antimicrobial activity" (or "antimicrobial
effect") as used herein means a capability of killing and/or
inhibiting the growth of microbial cells such as in particular
bacteria and fungi and more in particular E. coli, P. aeruginosa,
S. aureus, P. acnes, A. brasiliensis and/or C. albicans.
[0012] p-Hydroxybenzylamine is also known as 4-hydroxybenzylamine
respectively 4-(aminomethyl)-phenol [CAS 696-60-6] and is e.g.
commercially available at Ugarit Chimie (Issy les Moulineux,
France).
[0013] According to the present invention p-hydroxybenzylamine can
also be employed in the form of a salt thereof. Suitable salts
encompass e.g. salts obtainable with acids, such as e.g. with
mineral acids such as hydrogen chloride, hydrogen bromide,
sulphuric acid or phosphoric acid; with appropriate carboxylic
acids, e.g. aliphatic mono- or dicarboxylic acids such as formic
acid, acetic acid, trifluoroacetic acid, trichloroacetic acid,
propionic acid, glycolic acid, succinic acid, fumaric acid, malonic
acid, maleic acid, oxalic acid, phthalic acid, citric acid, lactic
acid or tartaric acid; with aromatic carboxylic acids such as
benzoic acid or salicylic acid; with aromatic-aliphatic carboxylic
acids such as mandelic acid or cinnamic acid; with heteroaromatic
carboxylic acids such as nicotinic acid; or with aliphatic or
aromatic sulfonic acids such as methanesulfonic acid or
toluenesulfonic acid. Particular suitable salts of
p-hydroxybenzylamine for the purpose of the present invention are
the hydrochloride [CAS 1004-23-5] or the hydrobromide [CAS
90430-14-1].
[0014] Preferably, in all embodiments of the present invention
p-hydroxybenzylamine is used in the form of its hydrochloride.
Nevertheless, even if incorporated as free amine, the actual form
of p-hydroxybenzylamine in the compositions according to the
present invention, i.e. its existence as free amine or a salt
thereof may depend on the respective pH/mixture of a specific
composition.
[0015] The cosmetic compositions according to the present invention
are in particular topically applied to mammalian keratinous tissue
such as in particular to human skin or the human scalp and
hair.
[0016] The term "cosmetic composition" as used in the present
application refers to cosmetic compositions as defined under the
heading "Kosmetika" in Rompp Lexikon Chemie, 10th edition 1997,
Georg Thieme Verlag Stuttgart, New York as well as to cosmetic
compositions as disclosed in A. Domsch, "Cosmetic Compositions",
Verlag fur chemische Industrie (ed. H. Ziolkowsky), 4.sup.th
edition, 1992.
[0017] Suitable surfactants, emulsifiers, thickeners, and oils-such
as preferably silicone oils--for the purpose of the present
inventions are ails surfactants, emulsifiers, thickeners, and oils
commonly used in cosmetic applications and which are e.g. listed in
CTFA Cosmetic Ingredient Handbook, First edition 1988. Such
suitable surfactants, emulsifiers, thickeners, and oils are well
known to a person skilled in the art.
[0018] The cosmetic compositions according to the present invention
preferably further comprise a physiologically acceptable medium,
that is to say a medium compatible with keratinous substances, such
as the skin, mucosa, and keratinous fibres. In particular the
physiologically acceptable medium is a cosmetically acceptable
carrier.
[0019] The term cosmetically acceptable carrier refers to all
carriers and/or excipients and/or diluents conventionally used in
cosmetic compositions.
[0020] Preferably, the cosmetic compositions according to the
invention are in the form of a suspension or dispersion in solvents
or fatty substances, or alternatively in the form of an emulsion or
micro emulsion (in particular of O/W- or W/O-type), PIT-emulsion,
nano emulsion, multiple emulsion (e.g. O/W/O- or W/O/W-type),
pickering emulsion, hydrogel, lipogel, one- or multiphase solution
or vesicular dispersion.
[0021] The cosmetic compositions in accordance with the invention
can be in the form of a liquid, lotion, a thickened lotion, a gel,
a cream, a milk, an ointment or a paste.
[0022] The cosmetic compositions according to the invention have a
pH in the range of 3-10, preferably in the range of pH of 4-8, most
preferred in the range of pH 5-7. The pH is adjusted by methods
known to a person skilled in the art, e.g. by using an acid such as
a hydroxy acid including glycolic acid, lactic acid, malic acid,
citric acid and tartaric acid or a base such as e.g. sodium or
potassium hydroxide or ammonium hydroxide as well as mixtures
thereof.
[0023] Preferably, in the compositions according to the invention
citric acid in an amount of at least 0.0001 wt.-%, such as e.g. in
an amount of 0.01-1 wt.-%, in particular in an amount of 0.01 to
0.5 wt.-% is used for pH adjustment.
[0024] The cosmetic compositions according to the present invention
are in particular skin care preparations, functional preparations
and/or hair care preparations such as most in particularly skin or
hair care preparations.
[0025] Examples of skin care preparations are, in particular, light
protective preparations, anti-ageing preparations, preparations for
the treatment of photo-ageing, body oils, body lotions, body gels,
treatment creams, skin protection ointments, moisturizing
preparations such as moisturizing gels or moisturizing sprays, face
and/or body moisturizers, skin-tanning preparations (i.e.
compositions for the artificial/sunless tanning and/or browning of
human skin), for example self-tanning creams as well as skin
lightening preparations.
[0026] Examples of functional preparations are cosmetic
compositions containing active ingredients such as hormone
preparations, vitamin preparations, vegetable extract preparations,
anti-ageing preparations, and/or antimicrobial (antibacterial or
antifungal) preparations without being limited thereto.
[0027] Examples hair care preparations which are suitable according
to the invention and which may be mentioned are shampoos, hair
conditioners (also referred to as hair rinses), hairdressing
compositions, hair tonics, hair regenerating compositions, hair
lotions, water wave lotions, hair sprays, hair creams, hair gels,
hair oils, hair pomades or hair brilliantines. Accordingly, these
are always preparations which are applied to the hair and the scalp
for a shorter or longer time depending on the actual purpose for
which they are used.
[0028] In a particular preferred embodiment of the invention the
hair care preparations are used for the treatment of dandruff. The
addition of p-hydroxybenzylamine or a salt thereof to hair care
preparations effects simultaneous dandruff treatment. However, it
is also possible to produce preparations which are used primarily
or exclusively for the purpose of reducing and/or eliminating
dandruff.
[0029] If the hair care preparations according to the invention are
supplied as shampoos, these can be clear liquids, opaque liquids
(with pearly luster effect), in cream form, gel-like or else in
powder form or in tablet form, and as aerosols. The surfactant raw
materials on which these shampoos are based can be anionic,
cationic, nonionic and amphoteric in nature and also be present in
combinations of these substances.
[0030] Examples of anionic surfactants suitable for the
incorporation into the shampoo preparations according to the
present invention are C.sub.10-20 alkyl- and alkylenecarboxylates,
alkyl ether carboxylates, fatty alcohol sulfates, fatty alcohol
ether sulfates, alkylolamide sulfates and sulfonates, fatty acid
alkylolamide polyglycol ether sulfates, alkanesulfonates and
hydroxyalkanesulfonates, olefinsulfonates, acyl esters of
isothionates, alpha-sulfo fatty acid esters,
alkylbenzenesulfonates, alkylphenol glycol ether sulfonates,
sulfosuccinates, sulfosuccinic monoesters and diesters, fatty
alcohol ether phosphates, protein-fatty acid condensation products,
alkyl monoglyceride sulfates and sulfonates, alkyl glyceride ether
sulfonates, fatty acid methyltaurides, fatty acid sarcosinates, and
sulforicinoleates. These compounds and their mixtures are used in
the form of their salts which are soluble in water or dispersible
in water, for example the sodium, potassium, magnesium, ammonium,
mono-, di- and triethanolammonium and analogous alkylanunonium
salts.
[0031] Examples of suitable cationic surfactants are quaternary
ammonium salts such as di(C.sub.10-C.sub.24alkyl)dimethylammonium
chloride or bromide, preferably di
(C.sub.12-C.sub.18alkyl)-dimethylammonium chloride or bromide;
C.sub.10-C.sub.24-alkyldimethylethylammonium chloride or bromide;
C.sub.10-C.sub.24-alkyltrimethylammonium chloride or bromide,
preferably cetyltrimethylammonium chloride or bromide and
C.sub.20-C.sub.24-alkyltrimethylammonium chloride or bromide;
C.sub.10-C.sub.244-alkyldimethylbenzylammonium chloride or bromide,
preferably C.sub.12-C.sub.18-alkyldime
methylbenzylammoniumchloride;
N--(C.sub.12-C.sub.18-alkyl)pyridinium chloride or bromide,
preferably N--(C.sub.12-C.sub.16-alkyl)pyridinium chloride or
bromide; N--(C.sub.12-C.sub.18-alkyl)isoquinolinium chloride,
bromide or monoalkyl sulfate;
N--(C.sub.12-C.sub.18-alkyloylcolaminoformylmethyl)pyridinium
chloride; N--(C.sub.12-C.sub.18-alkyl)-N-methylmorpholinium
chloride, bromide or monoalkyl sulfate;
N--(C.sub.12-C.sub.18-alkyl)-N-ethylmorpholinium chloride, bromide
or monoalkyl sulfate; C.sub.16-C.sub.18-alkylpentaoxethylammonium
chloride; isobutylphenoxyethoxyethyldimethyl-benzylammonium
chloride; salts of N,N-diethylaminoethylstearylamide and oleylamide
with hydrochloric acid, acetic acid, lactic acid, citric acid,
phosphoric acid; N-acylamidoethyl-N,N-diethyl-N-methylammonium
chloride, bromide or monoalkylsulfate and
N-acylaminoethyl-N,N-diethyl-N-benzylammonium chloride, bromide or
monoalkyl sulfate, where acyl is preferably stearyl or oleyl.
[0032] Examples of suitable nonionic surfactants which can be used
as detergent substances are fatty alcohol ethoxylates
(alkylpolyethylene glycols); alkylphenol polyethylene glycols;
alkyl mercaptan polyethylene glycols; fattyamine ethoxylates
(alkylaminopolyethylene glycols); fatty acid ethoxylates
(acylpolyethylene glycols); polypropylene glycol ethoxylates
(Pluronic); fatty acid alkylolamides (fatty acid amide polyethylene
glycols); sucrose esters; sorbitol esters and polyglycol ether.
[0033] Examples of amphoteric surfactants which can be added to the
shampoos are N--(C.sub.12-C.sub.18-alkyl)-.beta.-aminopropionates
and N--(C.sub.12-C.sub.18-alkyl)-.beta.-iminodipropionates as
alkali metal and mono-, di- and trialkylammonium salts;
N-acylamidoalkyl-N,N-dimethylacetobetaine, preferably
N--(C.sub.8-C.sub.18-acyl)amidopropyl-N, N-dimethylacetobetaine;
C.sub.12-C.sub.18-alkyldimethylsulfopropylbetaine; amphoteric
surfactants based on imidazoline (commercial name: Miranol.RTM.,
Steinapon.RTM.), preferably the sodium salt of
1-(.beta.-carboxymethyloxyethyl)-1-(carboxymethyl)-2-laurylimidazolinium;
amine oxide, for example C.sub.12-C.sub.18-alkyldimethylamine
oxide, fatty acid amidoalkyldimethylamine oxide.
[0034] The hair care preparations according to the invention can
additionally contain further additives customary in hair care such
as for example perfumes, colorants, also those which simultaneously
dye or tint the hair, solvents, opacifying agents and pearly luster
agents, for example esters of fatty acids with polyols, magnesium
and zinc salts of fatty acids, dispersions based on copolymers,
thickening agents such as sodium, potassium and ammonium chloride,
sodium sulfate, fatty acid alkylolamides, cellulose derivatives,
natural rubbers, also plant extracts, protein derivatives such as
gelatin, collagen hydrolysates, polypeptides with a natural or
synthetic basis, egg yolk, lecithin, lanolin and lanolin
derivatives, fats, oils, fatty alcohols, silicones, deodorizing
agents, substances with antimicrobial activity, substances with
antiseborrhoeic activity, substances with keratolytic and
keratoplastic effect, such as, for example, sulfur, salicylic acid
and enzymes as well as further anti-dandruff agents such as
olamine, climbazol, zink pyrithion, ketoconazole, salicylic acid,
sulfur, tar preparations, derivatives of undecenic acid, extracts
of nettel, rosmary, cottonwood, birch, walnut, willow bark and/or
arnica which may act even synergistically with the
p-hydroxybenzylamine or a salt thereof in the treatment of
dandruff.
[0035] For the preparation of the hair care preparations the
p-hydroxybenzylamine or a salt thereof is dissolved under stirring
at a temperature in the range between 20 and 60.degree. C.,
preferably at room temperature, in the detergent substance used.
Subsequently, the further additives are added.
[0036] In the event of alcohol containing scalp respectively hair
care preparations p-hydroxybenzylamine or a salt thereof is
dissolved in the alcohol at a temperature in the range between 20
and 40.degree. C., preferably at room temperature. Subsequently,
the further additives are added. In the event of hair rinses and
oil-in-water emulsions the active substance is dissolved in the
fatty phase, which means together with the oil and the emulsifier
at a temperature in the range between 70 and 90.degree., preferably
at 75.degree. C. Subsequently, hot water is added and the emulsion
is stirred and cooled.
[0037] The shampoos are produced in a manner known per se by mixing
the individual components and where necessary further processing
appropriate for the particular type of preparation.
[0038] Examples of hair care preparations in which the
p-hydroxybenzylamine or a salt thereof can be used according to the
invention and which may be mentioned are hair conditioners, hair
tonics and hair regenerating compositions, which are rinsed off
from the hair after a certain time or, depending on the
formulation, can also remain on the hair. These products contain,
inter alia, substances from the group of the above mentioned
cationic surfactants which display a reviving and antistatic
property on the hair.
[0039] The hair care preparations according to the invention, in
particular for the treatment of dandruff, can also be supplied in
the form of aqueous and aqueous alcoholic hair lotions, water wave
lotions (hair setting compositions), also those in gel form, and in
aerosol form as hair spray, as well as in the form of hair care and
hairdressing creams and gels. Ethanol and isopropanol are
preferably used as alcohols.
[0040] All these preparations are also produced as already
mentioned for the shampoo in a manner known per se with the
addition of the p-hydroxybenzylamine or a salt thereof.
[0041] The p-hydroxybenzylamine or a salt thereof is incorporated
in the scalp respectively hair care preparations according to the
invention in amounts which are normally between about 0.001 and
about 10%. Within this range, the concentrations of the specific
preparations depend on the purpose for which they are used. Certain
formulations such as, for example, concentrates which must be
diluted before they are used may also have considerably higher
concentrations.
[0042] If the preparations remain on the hair, such as, for
example, hair lotions, hair setting compositions, creams, etc.,
lower concentrations will be used, for example of about 0.01 to
about 3%, preferably 0.1 to 2%. They are expediently used in higher
concentrations if the hair care preparations act, where appropriate
after dilution, for only a short time on the hair and scalp, such
as, for example, shampoos or hair rinses. In these cases, for
example, concentrations of about 0.2 to about 10%, preferably about
0.5 to about 3%, may be expedient.
[0043] Particular suitable hair care preparations according to the
present invention are shampoo preparations comprising (i)
p-hydroxylbenzylamine or a salt thereof in an amount of about 0.001
to 10 wt.-%, preferably of about 0.005 wt.-% to 5 wt.-%, more
preferably of about 0.01 to 1 wt.-%, based on the total weight of
the composition, (ii) water and (iii) at least one anionic
surfactant. Preferably, the anionic surfactant is selected from the
group consisting of sodium lauryl sulfate, ammonium lauryl sulfate,
sodium lauryl ether sulfate, ammonium lauryl ether sulfate, sodium
lauroyl sarconisate, sodium oleylsuccinate, ammonium lauryl
sulfosuccinate, sodium dodecylbenzol sulfonate and/or
triethanolamine dodecylbenzol sulfonate or mixtures thereof, such
as in particular sodium lauryl sulfate, ammonium lauryl sulfate,
sodium lauryl ether sulfate and/or ammonium lauryl ether sulfate.
The total amount of the anionic surfactant in the compositions
according to the invention ranges from 0.5 to 45 wt.-%, preferably
from 1.5 to 35 wt.-%, more preferably from 7 to 25 wt.-%, in
particular from 7 to 15 wt.-% based on the total weight of the
composition.
[0044] Particular suitable hair conditioners according to the
present invention may be rinse off or leave on conditioners,
preferably rinse-off conditioners. Particular advantageous hair
conditioners according to the present invention comprise (i)
p-hydroxylbenzylamine or a salt thereof in an amount of about 0.001
to 10 wt.-%, preferably of about 0.005 wt.-% to 5 wt.-%, more
preferably of about 0.01 to 1 wt.-%, based on the total weight of
the composition, (ii) water and (iii) at least one silicone oil. In
principal any silicone oil is suitable for use in the hair
conditioner. However, the silicone oil is preferably selected from
dimethicones, dimethiconols, polydimethylsiloxanes, arylated
silicones, cyclic silicones, silicone surfactants and aminated
silicones and may be volatile or non volatile. Particular suitable
silicone oils are dimethicone, dimethiconol, polydimethylsiloxane
which are available from various suppliers such as Dow Corning. The
total amount of the at least one silicone oil in the hair
conditioner is preferably selected is in the range of 0.01 to 10
wt.-%, preferably 0.02 to 7.5 wt.-%, more preferably 0.05 to 5
wt.-% and most preferably 0.1 to 3 wt.-%, based on the total weight
of the composition.
[0045] In another preferred embodiment, the cosmetic compositions
according to the present invention are O/W emulsions, W/O emulsions
and/or gels such as shower gels or hair gels.
[0046] The O/W emulsions according to the present invention
advantageously comprise (i) p-hydroxylbenzylamine or a salt thereof
in an amount selected in the range of about 0.001 to 10 wt.-%,
preferably of about 0.005 wt.-% to 5 wt.-%, more preferably of
about 0.01 to 1 wt.-%, based on the total weight of the
composition, (ii) water and (iii) at least one O/W- or
Si/W-emulsifier selected from the list of glycerylstearatcitrate,
glycerylstearate (self emulsifying), stearic acid, salts of stearic
acid, polyglyceryl-3-methylglycosedistearate, ceteareth-20,
steareth-2, steareth-12, PEG-40 stearate, phosphate esters and the
salts thereof such as cetyl phosphate (Amphisol.RTM. A),
diethanolamine cetyl phosphate (Amphisol.RTM. DEA), potassium cetyl
phosphate (Amphisol.RTM. K), sodiumcetearylsulfat, sodium glyceryl
oleate phosphate, hydrogenated vegetable glycerides phosphate,
sorbitan oleate, sorbitan sesquioleate, sorbitan isostearate,
sorbitan trioleate, lauryl glucoside, decyl glucoside, sodium
stearoyl glutamate, sucrose polystearate and Hydrated Polyisobuten
as well as mixtures thereof.
[0047] Also one or more synthetic polymers may be used as an
emulsifier such as for example, PVP eicosene copolymer,
acrylates/C10-3o alkyl acrylate crosspolymer, acrylates/steareth-20
methacrylate copolymer, PEG-22/dodecyl glycol copolymer,
PEG-45/dodecyl glycol copolymer, and mixtures thereof. In a
particular preferred embodiment the O/W-emulsifier is selected from
the group of cetyl phosphates such as in particular potassium cetyl
phosphate (commercially available as Amphisol.RTM. K), glyceryl
stearate (and) PEG 100 stearate (commercially available as
Arlacel.RTM. 165) and/or polyalkylenglycolether such as in
particular laureth-35 (lauryl alcohol with 35 EO units;
commercially available as Brij.RTM. 35). The at least one O/W
emulsifier is preferably used in an amount of about 0.001 to 10
wt.-%, more preferably in an amount of 0.1 to 7 wt.-% with respect
to the total weigh of the composition. Additionally the cosmetic
composition in the form of a O/W emulsion contains advantageously
at least one co-emulsifier selected from the list of alkyl alcohols
such as Cetyl Alcohol (Lorol C16, Lanette 16) Cetearyl Alcohol
(Lanette.RTM. O), Stearyl Alcohol (Lanette.RTM. 18), Behenyl
Alcohol (Lanette.RTM. 22), Glyceryl Monostearate, Glyceryl
Myristate (Estol.RTM. 3650), Hydrogenated Coco-Glycerides (Lipocire
Na10) without being limited to this and mixtures thereof.
[0048] The W/O emulsions according to the present invention
advantageously comprise (i) p-hydroxylbenzylamine or a salt thereof
in an amount selected in the range of about 0.001 to 10 wt.-%,
preferably of about 0.005 wt.-% to 5 wt.-%, more preferably of
about 0.01 to 1 wt.-%, based on the total weight of the
composition, (ii) water and (iii) at least one W/O- or
W/Si-emulsifier selected from the list of
polyglyceryl-2-dipolyhydroxystearat, PEG-30 dipolyhydroxystearat,
cetyl dimethicone copolyol, polyglyceryl-3 diisostearate
polyglycerol esters of oleic/isostearic acid, polyglyceryl-6
hexaricinolate, polyglyceryl-4-oleate, polygylceryl-4 oleate/PEG-8
propylene glycol cocoate, magnesium stearate, sodium stearate,
potassium laurate, potassium ricinoleate, sodium cocoate, sodium
tallowate, potassium castorate, sodium oleate, and mixtures
thereof. Further suitable W/Si-emulsifiers are Lauryl
Polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone and/or PEG-9
Polydimethylsiloxyethyl Dimethicone and/or Cetyl PEG/PPG-10/1
Dimethicone and/or PEG-12 Dimethicone Crosspolymer and/or
PEG/PPG-18/18 Dimethicone. The at least one W/O emulsifier is
preferably used in an amount of about 0.001 to 10 wt.-%, more
preferably in an amount of 0.2 to 7 wt.-% with respect to the total
weigh of the composition.
[0049] The gel preparations according to the present invention
preferably comprise (i) p-hydroxylbenzylamine or a salt thereof in
an amount selected in the range of about 0.001 to 10 wt.-%,
preferably of about 0.005 wt.-% to 5 wt.-%, more preferably of
about 0.01 to 1 wt.-%, based on the total weight of the
composition, (ii) water and (iii) at least one water soluble
thickener. Such water soluble thickeners are well known to a person
skilled in the art and are e.g. listed in the "Handbook of Water
soluble gums and resins" by Robert L. Davidson (Mc Graw Hill Book
Company (1980)). Particularly suitable water soluble thickeners are
selected from the group consisting of polyacrylic acids (e.g.
commercially available under the tradename Carbomer or
Carbopol.RTM.), homopolymers of 2-Acrylamido-2-methylpropansulfonic
acid (e.g. commercially available as Rheothik.RTM.11-80), acrylate
copolymers (e.g. commercially available under the tradename
Pemulen.RTM. or Aculyn.RTM. 33), branched
Poly(methacryloyloxyethyltrimethylammoniumchlorid) (INCI-name
Polyquaternium-37), non-modified guar gums (e.g. commercially
available under the tradename Jaguar), starch or derivatives
thereof and/or hydroxyalkylcellulosen. Preferably the water soluble
thickener is used in an amount of about 0.001 to 10 wt.-%, more
preferably in an amount of 0.2 to 7 wt.-%, based on the total weigh
of the composition.
[0050] The following examples are provided to further illustrate
the compositions and effects of the present invention. These
examples are illustrative only and are not intended to limit the
scope of the invention in any way.
EXAMPLE 1
Antimicrobial Efficacy
[0051] The antimicrobial activity was assessed by determination of
the Minimum Inhibitory Concentration (MIC) using the agar dilution
method according to DIN 58 940 at the Labor L+SAG, D-Bad
Bocklet-Grossenbrach.
[0052] Culture plates with a diameter of 5.5 cm were prepared with
fresh, kept liquid (50.degree. C.) Mueller-Hinton Agar (double
concentrated, Merck 1.05437)/aqua purificata comprising
p-Hydroxybenzylamine (pHBA) in the concentrations indicated in
Table 1 according to standard methods. After solidifying and drying
(about 1 h at 36.degree. C.), the culture plates were inoculated
with 1 .mu.l of a suspension of the respective microorganism with
the colony forming unit as outlined in table 1. The inoculated
plates were then incubated at 36.degree. C. The MIC's (i.e. the
concentrations where still no growth could be observed) were
determined after 18 h for E. coli, P. aeruginosa and S. aureus;
after 48 h for P. acnes and after 78 h for A. brasiliensis and C.
albicans. Per sample two culture plates were prepared. As control
incubated and non-incubated cultures were used. The incubated
control samples showed and the non-incubated control samples did
not show microbial growth.
TABLE-US-00001 TABLE 1 Test series Sample Final concentration in
[mg/ml] pHBA 40 26.67 17.78 11.85 7.90 5.27 3.51 2.34 1.56 1.04
[0053] The suspensions of the microorganism's No. 1-4 were prepared
by homogeneous suspension of 3-5 colonies of the same morphology in
physiological NaCl-solution. The suspensions were adjusted such,
that the haze corresponded to the Mac Farland standard 1.0 (about
3.0*10.sup.8 KBE*/ml). For the preparation of the suspensions of
the microorganisms 5 and 6, the microorganisms have been taken with
a sterile swab and diluted in an amount of physiological NaCl
solution such, that the haze corresponded to the Mac Farland
standard 1.0. Afterwards the suspensions of the microorganisms 1
and 3-6 have been further diluted with physiological NaCl-solution
in a ratio of 1:10. The colony count was determined using a spiral
plater system (see table 2).
TABLE-US-00002 TABLE 2 Susp. 1 Susp. 2 No Culture KBE * /ml 1 E.
coli ATCC 8739 2.4 * 10.sup.7 1.9 * 10.sup.7 2 P. aeruginosa ATCC
9027 2.7 * 10.sup.8 2.1 * 10.sup.8 3 S. aureus ATCC 6538 3.0 *
10.sup.7 1.8 * 10.sup.7 4 P. acnes ATCC 11828 2.3 * 10.sup.7 2.6 *
10.sup.7 5 A. brasiliensis ATCC 16404 2.9 * 10.sup.7 3.0 * 10.sup.7
6 C. albicans ATCC 10231 2.3 * 10.sup.7 2.0 * 10.sup.7 *Colony
forming units
[0054] The results are presented in the table 3 below. As can be
seen, pHBA effectively inhibits the growth of the respective
microorganism.
TABLE-US-00003 TABLE 3 MIC's of p-hydroxybenzylamine Compound pHBA
Strain MIC [mg/ml] E. coli 5.27 P. acnes 7.90 P. aeruginosa 5.27 S.
aureus 5.27 A. brasiliensis 5.27 C. albicans 5.27
EXAMPLE 2
O/W Foundation
TABLE-US-00004 [0055] Ingredients INCI wt. % Deionised Water Aqua
Ad 100 Glycerin Glycerin 2.00 Triethanolamine Triethanolamine 0.80
Paratexin Methylparaben EP 0.20 Keltrol Xanthan Gum 0.30
p-Hydroxybenzylamine 1.50 Titanium dioxide C.I. 77891 4.57 SunCROMA
yellow iron oxide C.I. 77492 0.30 SunCROMA red iron oxide C.I.
77491 0.13 SunCROMA black iron oxide C.I. 77499 0.20 DC 556 Phenyl
Trimethicone 3.60 Stearic Acid Stearic Acid 1.4 Cetyl Alcohol Cetyl
Alcohol 3.0 Paratexin P Propylparaben EP 0.1
EXAMPLE 3
Alcohol Free Facial Tonic
TABLE-US-00005 [0056] Ingredients INCI wt. % Polysorbate 20
Polysorbate 20 2.00 ALPAFLOR CALENDULA Calendula Officinalis 0.80
AO Extract, Glycerin, Water ALPAFLOR BUDDLEJA AO Buddleja Davidii
Extract, 0.80 Arlasilk Phospholipd CDM Glycerin, Water Sodium Coco
0.50 PG-Dimonium Chloride Phosphate Fragrance Parfum 0.10 Deionised
Water Aqua Ad 100 Citric Acid Citric Acid 0.01 p-Hydroxybenzylamine
1.00 Paratexin FRP Ethylparaben, Butylparaben, 0.10 Propylparaben,
Isobutylparaben
EXAMPLE 4
W/O Cream
TABLE-US-00006 [0057] Ingredients INCI wt. % Cremophor WO-7 PEG-7
Hydrogenated Castor Oil 2.50 Elfacos ST-9 PEG-45/Dodecyl Glycol
Copolymer 2.00 Cirebelle 303 Synthetic Wax 5.00 Cirebelle 109L
Synthetic Wax 7.20 Miglyol 818 Caprylic/Capric/Linoleic
Triglyceride 5.00 Eutanol G Octyldodecanol 7.50 Cetiol OE
Dicaprylyl Ether 9.20 Deionised Water Aqua Ad 100 Glycerin Glycerin
5.00 Propylene Glycol Propylene Glycol 2.00 Euxyl PE 9010
Phenoxyethanol and 0.80 Ethylhexylglycerin p-Hydroxybenzylamine
1.50
EXAMPLE 5
Soothing Gel
TABLE-US-00007 [0058] Ingredients INCI wt. % Deionised Water Aqua
Ad 100 Keltrol CG RD Xanthan Gum 0.50 Sodium Benzoate Sodium
Benzoate 0.20 Potassium Sorbate Potassium Sorbate 0.25 ALPAFLOR
MARRABIUM Glycerin, Aqua, Marrubium 3.00 AO Vulgare, Sodium
Benzoate, Potassium Sorbate p-Hydroxybenzylamine 3.0
EXAMPLE 6
O/W Lotion
TABLE-US-00008 [0059] Ingredients INCI wt. % Deionised Water Aqua
Ad 100 Menthol Menthol 0.10 Keltrol CG SFT Xanthan Gum 1.25
Ceralution ES Ceteareth-25, Di Sodium Ethylene 2.00 Dicocamide
PEG-15 Disulfate Isofol 20 Octyldodecanol 5.00 Paratexin EC5
Benzoic Acid Benzyl Alcohol, 1.00 Dehydroacetic Acid, Sorbic Acid
p-Hydroxybenzylamine 1.50
EXAMPLE 7
Facial Cleansing Gel
TABLE-US-00009 [0060] Ingredients INCI wt. % Deionised Water Aqua
Ad 100 Carbopol AQUA SF-1 Acrylates Copolymer 7.50 Polymer Texapon
NSO-BZ Sodium Laureth Sulfate 41.00 Miranol Ultra C 32 Sodium
Cocoamphoacetate 5.00 Hostapon CLG Sodium Lauroyl Glutamate 4.50
Jaguar C 162 Hydroxypropyl Guar 1.00 Hydroxypropyltrimonium
Chloride p-Hydroxybenzylamine 0.50 Euxyl K 300 Phenoxyethanol &
Methylparaben & 0.80 Propylparaben & Ethylparaben &
Butylparaben & Isobutylparaben ALPAFLOR MALVA Glycerin, Aqua,
Malva 2.00 AO Sylvestris (Mallow) Flower Extract, Potassium
Sorbate, Sodium Benzoate Parfum Limette Fragrance q.s. FD&C
Yellow 5 CI 19140 0.50 Frescolat Plus Menthyl Lactate, Menthol 0.20
Dehyton AB-30 Coco Betaine 2.00 Rewoderm LI S 80 PEG-200
Hydrogenated 1.00 Glyceryl Palmate & PEG-7 Glyceryl Cocoate
Citric Acid Citric Acid q.s.
EXAMPLE 8
Leave-on Hair and Scalp Conditioner
TABLE-US-00010 [0061] Ingredients INCI wt. % Deionised Water Aqua
Ad 100 Ethanol DEB 96 Alcohol denat. 30.00 PVP/VA Copolymer PVP/VA
Copolymer 2.50 Euxyl K-300 Phenoxyethanol, Methylparaben, 0.80
Butylparaben, Ethylparaben, Propylparaben, Isobutylparaben
Protachem HCO-40 PEG-40 Hydrogenated 0.50 Castor Oil Fragrance ADAM
Parfum 0.10 Triethanolamine 99% Triethanolamine 0.01 FD & C
Yellow No 5 (0.5% CI 19140, Aqua 0.10 Solution) FD & C Blue No
1 (0.5% CI 42090, Aqua 0.10 Solution) p-Hydroxybenzylamine 0.5
EXAMPLE 9
Anti Dandruff Shampoo
TABLE-US-00011 [0062] INCI Nomenclature wt. % Aqua (water) Ad 100
Ammonium laureth sulfate 10.00 Ammonium lauryl sulfate 5.00 Glycol
distearate 1.00 Dimethicone 1.00 Cetyl alcohol 0.50 Cocamide MEA
3.00 p-Hydroxybenzylamine 2.50 ZPT 0.50 Guar hydroxypropyltrimonium
chloride 0.20 Hydrogenated polydecene 1.00 Polyquaternium 10 0.30
PEG 7m 0.50 Trimethylpropane tricaprylate/tricaprate 1.00
Preservative q.s. Fragrance 0.30 E 104, E 110, E 132 0.02
EXAMPLE 10
Clear Anti Dandruff Shampoo with Plant Extracts
TABLE-US-00012 [0063] INCI Nomenclature wt. % Aqua (water) Ad 100
Sodium laureth sulfate 10.00 Lauryl glucoside 6.00 Cocamidopropyl
betaine, 2.00 Propylene glycol 2.00 Perfume oil 1.25 Sodium citrate
0.25 Sodium benzoate 0.20 Panthenol 1.00 Sodium formate 0.20
Polyquaternium-10 0.20 Hydroxypropyl guar hydroxypropyltrimonium
chloride 0.05 p-Hydroxybenzylamine 5.00 PEG-35 castor oil 1.00
Maris sal 1.25 Polysorbate 20 1.00 Tocopheryl acetate 0.20 Prunus
armeniaca 0.20 Echinacea purpurea 0.05 Retinyl palmitate 0.05
Tocopherol 0.05 Linoleic acid 0.20 Preservative 1.00 CI77891
0.02
EXAMPLE 11
Rinse-Off Hair and Scalp Conditioner
TABLE-US-00013 [0064] INCI Nomenclature wt. % Aqua (water) Ad 100
Stearyl alcohol 2.50 Cetyl alcohol 2.50 Behentrimonium chloride
1.30 Dimethicone 2.00 p-Hydroxybenzylamine 1.50 Fragrance 0.50
Butylene glycol 2.00 Methyl parabene 0.30
* * * * *