U.S. patent application number 13/688668 was filed with the patent office on 2013-04-25 for ethanol-free aqueous perfume composition.
The applicant listed for this patent is Letha A. Gatz, Christian Piechocki, Reed A. Shick, Christopher J. Tucker. Invention is credited to Letha A. Gatz, Christian Piechocki, Reed A. Shick, Christopher J. Tucker.
Application Number | 20130101531 13/688668 |
Document ID | / |
Family ID | 34966543 |
Filed Date | 2013-04-25 |
United States Patent
Application |
20130101531 |
Kind Code |
A1 |
Shick; Reed A. ; et
al. |
April 25, 2013 |
ETHANOL-FREE AQUEOUS PERFUME COMPOSITION
Abstract
The present invention relates to an ethanol-free, non-fatty,
non-sticky perfumed aqueous cosmetic microemulsion composition,
including one or more fragrance materials, a solvent, an aqueous
medium, and optionally, one or more surfactants; wherein the
solvent in the microemulsion is a vicinal diol such as
1,2-hexanediol.
Inventors: |
Shick; Reed A.; (Midland,
MI) ; Tucker; Christopher J.; (Midland, MI) ;
Piechocki; Christian; (Marienthal, FR) ; Gatz; Letha
A.; (Midland, MI) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Shick; Reed A.
Tucker; Christopher J.
Piechocki; Christian
Gatz; Letha A. |
Midland
Midland
Marienthal
Midland |
MI
MI
MI |
US
US
FR
US |
|
|
Family ID: |
34966543 |
Appl. No.: |
13/688668 |
Filed: |
November 29, 2012 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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11579301 |
Nov 1, 2006 |
8343521 |
|
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PCT/US05/13564 |
Apr 21, 2005 |
|
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13688668 |
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60578099 |
Jun 8, 2004 |
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Current U.S.
Class: |
424/59 ; 512/1;
514/772 |
Current CPC
Class: |
C11D 3/2044 20130101;
C11D 17/0021 20130101; C11D 3/50 20130101; A61K 8/345 20130101;
A61Q 13/00 20130101; A61Q 17/00 20130101; A61K 8/068 20130101 |
Class at
Publication: |
424/59 ; 512/1;
514/772 |
International
Class: |
A61K 8/06 20060101
A61K008/06; A61Q 13/00 20060101 A61Q013/00; A61Q 17/00 20060101
A61Q017/00 |
Claims
1.-16. (canceled)
17. A personal care composition comprising: an aqueous
microemulsion, comprising greater than 5 weight percent fragrance
material; a solvent, wherein said solvent is 1,2-hexanediol or
1,2-heptanediol; and a surfactant, wherein the weight ratio between
the fragrance material and the surfactant is from 1:1 to 5:1;
provided that the microemulsion is transparent and free of
ethanol.
18. The personal care composition of claim 17, wherein the weight
ratio between the fragrance material and the surfactant is from 2:1
to 4:1.
19. The personal care composition of claim 17, wherein the
surfactant is present in an amount of from 0.1 to 15 weight
percent.
20. The personal care composition of claim 17, wherein the
surfactant is present in an amount of from 0.5 to 10 weight
percent.
21. The personal care composition of claim 17, wherein the aqueous
microemulsion consists essentially of: from 5 to 30 weight percent
of 1,2-hexane diol, from 0.5 to 20 weight percent of an essential
oil, a surfactant being a combination of 0.5 to 5.0 weight percent
of Poly(oxy-1,2-ethanediyl), alpha-dodecyl-omega-hydroxy-(9CI) and
0.5 to 5.0 weight percent of stearic acid, sodium lauryl sulfate,
sodium laureth sulfate, cetyl trimethyl ammonium chloride or a
stearic acid salt, and water.
22. The personal care composition of claim 21, wherein the
essential oil is a natural essential oil, synthetic essential oil
or a mixture thereof.
23. The personal care composition of claim 21, wherein the
surfactant is Poly(oxy-1,2-ethanediyl),
alpha-dodecyl-omega-hydroxy-(9CI) and stearic acid.
24. The personal care composition of claim 21, wherein the
surfactant is Poly(oxy-1,2-ethanediyl),
alpha-dodecyl-omega-hydroxy-(9CI) and sodium lauryl sulfate.
25. The personal care composition of claim 21, wherein the
surfactant is Poly(oxy-1,2-ethanediyl),
alpha-dodecyl-omega-hydroxy-(9CI) and cetyl trimethyl ammonium
chloride.
26. The personal care composition of claim 17, further comprising
ingredients selected from the group consisting of antioxidants, UV
filters, cosmetic active ingredients, moisturizers, humectants,
emollients, opacifiers, pearly gloss impacting substances, and
antifoams.
27. The personal care composition of claim 17, wherein the personal
care composition is selected from the group consisting of
fragrances, eaux de toilettes, body sprays, and aqueous cosmetic
compositions.
28. The personal care composition of claim 17, wherein the
fragrance material is present in an amount equal to or greater than
6% and less than 50% by weight.
Description
BACKGROUND OF THE INVENTION
[0001] The present invention relates to a transparent, ethanol-free
perfumed aqueous microemulsion composition, such as fragrances,
Eaux de Toilettes, body sprays, body deodorants, refreshing and
cleaning wet towels, aqueous cosmetic compositions, household
cleaners, and air fresheners.
[0002] In the perfume industry there has been a long standing need
for ethanol-free aqueous perfume compositions. It is well known to
produce cosmetic compositions containing ethanol, by the consumers
often designated as "alcohol". Such ethanol-containing cosmetics
are not acceptable for various reasons such as skin sensitivity,
infant safety, and religious prohibition of use of ethanol for some
consumers. Also, there is an ongoing trend to reduce the use of
volatile organic chemicals (VOC). Aqueous compositions, on the
other hand, have the benefits that water is environmentally
friendly and the formulations are non-flammable. The perfume
industry has attempted to develop ethanol-free compositions to meet
the needs of the consumers.
[0003] Heretofore, ethanol-free aqueous perfume compositions, the
appearance of which can range from that of milk to that of a clear,
transparent liquid, generally include the following components: a
mixture of natural and/or synthetic fragrance raw materials
insoluble in water; an ionic surfactant and/or a non-ionic
surfactant; an amphiphilic solubilising agent, such as a
polyethylene glycol; an aqueous dispersing agent (generally water);
and a preservative. The surfactants in the above compositions are
generally present in high doses, and are intended, according to
their content, to emulsify or to couple the mixture of fragrance
materials.
[0004] The above known ethanol-free perfume compositions, generally
have the following drawbacks: the compositions are not always
transparent; the compositions are sticky owing to the sticky nature
of the surfactants and to the relatively large quantity of
surfactants implemented; the perfume given off by the fragrance
material present in the compositions is liable to be denatured by
the solubilising agent; the compositions are somewhat irritant
owing to the irritant nature of the solubilising agent and the
aggressive nature of the surfactants; and the fragrance material
present in the compositions are liable to be deteriorated by air
oxidation, which detrimentally affects the stability and the
olfactory characteristics of the compositions.
[0005] An attempt to eliminate the above drawbacks is disclosed in
U.S. Patent Application Publication No. US2003/0186836 A1,
published Oct. 2, 2003 wherein an isoprene glycol is used as the
microemulsion cosolvent in an ethanol-free perfume composition. The
Applicant of the above Patent Application Publication sought to
provide a composition with a reduced dose of surfactants that are
the origin, in particular, of the sticky and irritant nature of
known cosmetic compositions. However, the Applicant was not able to
completely eliminate the use of surfactants.
[0006] In addition, the composition disclosed in U.S. Patent
Application Publication No. US2003/0186836 has other disadvantages:
isoprene glycol is not a very amphiphilic solvent, is a poor
coupling agent and is not currently listed as a Cosmetic, Toiletry,
& Fragrance Association (CTFC) and The International
Nomenclature of Cosmetic Ingredients (INCI) acceptable cosmetic
ingredient; the composition is limited by the amount of essential
oils microemulsified (e.g. 10% by weight maximum); and the
composition is limited by a minimum amount of useful surfactant,
e.g. 1 wt. % surfactant.
[0007] Materials which are previously known and acceptable cosmetic
ingredients makes practical the use and acceptance of final
formulations containing such materials by cosmetic producers,
government agencies and ultimately the consumer. Isoprene glycol
has limited acceptance in just a few countries as a cosmetic
ingredient.
[0008] There is still a need in the cosmetic industry for an
ethanol-free aqueous cosmetic composition approved for cosmetic
uses that provides efficient, optically clear, non-greasy,
non-tacky fragrance microemulsions.
SUMMARY OF THE INVENTION
[0009] The present invention is directed to an ethanol-free,
transparent, perfumed aqueous microemulsion composition comprising:
(A) at least one fragrance material, (B) a solvent, wherein said
solvent is a vicinal diol such as 1,2-hexane diol, (C) an aqueous
medium, and (D) optionally, one or more surfactants.
[0010] The ethanol-free, transparent, perfumed aqueous cosmetic
microemulsion composition is generally non-greasy and non-sticky.
It is particularly useful as a cosmetic, microemulsion composition.
The perfumed aqueous cosmetic microemulsion composition of the
present invention, previously long-sought after, is now achieveable
by using a specific vicinal diol solvent, such as 1,2-hexanediol,
in place of known solubilising agents.
[0011] The vicinal diol solvent, for example, 1,2-hexanediol, which
is amphiphilic, i.e., both hydrophilic and lipophilic, makes it
possible, in fact, thanks to its solvent and solubilising power, to
substantially reduce the quantity of surfactants used to arrive at
a stable composition. This solvent further has characteristics that
are absolutely essential in order to obtain a suitable cosmetic
composition. Indeed, the solvent enables translucent compositions
to be obtained. In addition, the solvent does not denature the
fragrance substance or substances intended for incorporation in
said composition in order to obtain a perfumed composition, and the
solvent is neither sticky, nor irritant, nor sensitive to air
oxidation.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0012] "Ethanol-free" when used herein in reference to a substance
means substantially free of ethyl alcohol. "Substantially free" in
this context means less than 3 wt %, preferably less than 1 wt %,
and more preferably zero weight percent present in a substance.
[0013] A "microemulsion" as the term is used herein denotes a
pseudo one-phase transparent mixture of (i) two immiscible fluids,
and (ii) at least one amphiphile (exemplified by surfactants).
Microemulsions are transparent or translucent, and do not display
the opalescence of standard emulsions. The particle size of the
resulting droplets is small enough so the resulting mixture is
optically clear or translucent. Microemulsion droplet sizes are
variously defined in the art with a droplet size typically below
0.14 micron. The clarity of these compositions is advantageous in
cosmetic applications. Also, microemulsions are thermodynamically
stable and form spontaneously.
[0014] For the purposes of the present invention, the term
"optically clear" is used to define a composition that is
"transparent" (i.e. transmitting light without distortion) which
means that the size of the particles in the composition are reduced
to a size where the particles are not observable with optical
(visual) means. Transmitting light without distortion as used
herein means being able to read 12-point text through a
1-centimeter thick sample of the microemulsion.
[0015] The ethanol-free, perfumed aqueous microemulsion composition
of the present invention includes the following components: (A) one
or more fragrance raw materials, (B) a solvent, wherein said
solvent is a vicinal diol, (C) an aqueous medium, and (D)
optionally, one or more surfactants. The present invention may also
optionally contain one or more additional ingredients, such as
antioxidants, chelating agents, UV filters, preservatives,
thickening agents, cosmetic active ingredients, moisturizers,
humectants, emollients, opacifiers, pearly gloss impacting
substances, pigments, colorants, dyes and antifoams.
[0016] The perfumed aqueous microemulsion composition of the
present invention includes one or more fragrance materials,
Component (A), such as natural and/or synthetic fragrance raw
materials. Of particular interest are oil soluble perfume oils,
which may or may not be in a mixture with water soluble perfume
oils. The oil soluble perfume oils are natural, or nature-identical
essential oils, such as orange oil, pine oil, peppermint oil,
eucalyptus oil, lemon oil, clove leaf oil, cedarwood oil, bergamot
oil, rosemary oil, patchouli oil, lavandin oil, camomile, jasmine
oil, spike oil, rose oil, vetiver oil, fennel oil, anise oil, thyme
oil, germanium oil, lavender oil, marjoram or menthol. An animal
fragrant, is for example musk, castoreum, aber or zibet. Spagyric
essences are also known in the art. They are made by fermenting
certain herbs, which were collected while they were flowering, in
the presence of water and yeast, steam distilling off the active
ingredients, and concentrating the distilate to the spagyric basic
essence. The remaining mash is calcinated, and the basic essence
and the calcinated mash are combined to give the final spagyric
essence. Synthetic fragrant ingredients are for example synthetic
essential oils, such as composed of single compounds, such as
linalol, terpineol, nerol, cit-ronelal, benzaldehyde, cinnamon
aldehyde, vanillin or methylacetophenone. The fragrance materials
may also be synthetic oil-soluble perfume oils, selected from the
usual group consisting of fragrant hydrocarbons, alcohols, ketones,
aldehydes, ethers, esters, aldehydes, acetals and polyene
compounds. Naturally, this term also encompasses any mixture of
perfume oils described above, or perfume concentrates or bases with
preferably non-ethanolic diluents. Illustrative examples of
Component (A) may include commercially available fragrance
compositions such as MUSTANG M 0054401, THOMAS M 0054402, BLISS M
0054403, CRACK M 0054404, and CITRUS FUSION M 0054405 (all trade
names of V. MANE Fits S.A.).
[0017] The perfumed aqueous microemulsion composition will
advantageously include from about 1% by weight (wt. %) to about 50
wt. %, preferably from about 1% by weight (wt. %) to about 30 wt.
%, and most preferably about 2 wt. % to about 30 wt. % of such
fragrance materials.
[0018] The solvent, Component (B), useful in the present invention
includes vicinal diols, for example linear alkane vicinal diols,
most preferably linear alkane vicinal diols having from 5 to 8
carbon atoms. For example the solvent may include 1,2-pentanediol;
1,2-hexanediol; 1,2-heptanediol; 1,2-octanediol; and mixtures
thereof. Preferably, the solvent used in the present invention is
1,2-hexanediol.
[0019] The amount of solvent present in the composition is
generally from about 1% by weight to about 50 wt. %, preferably
from about 1 wt. % to about 25 wt. %, more preferably from about 3
wt. % to about 20 wt. %, and most preferably from about 5 wt. % to
about 15 wt. %.
[0020] The aqueous medium, Component (C), useful in the present
invention, includes for example at least water and more preferably
water stabilized with one or more optional ingredients such as
antioxidants, chelating agents, UV filters, and preservatives.
Additional ingredients such as thickening agents, cosmetic active
ingredients, moisturizers, humectants, emollients, opacifiers,
pearly gloss impacting substances, pigments, colorants, dyes and
antifoams may also be included in the aqueous medium of composition
of the present invention.
[0021] The amount of aqueous medium present in the composition is
generally from about 50 wt. % to about 95 wt. %, preferably from
about 55 wt. % to about 90 wt. % and more preferably from about 60
wt. % to about 85 wt. %.
[0022] The use of surfactants, Component (D), in the composition of
the present invention is optional. Surprisingly, the vicinal diol
can be used in combination with a large variety of surfactants for
achieving a clear, transparent microemulsion. Surfactants useful in
the present invention, Component (D), include for example cationic,
anionic, non-ionic, zwitterionic, amphophilic, or polymeric
surfactants, and mixtures thereof. Preferred surfactants include
mixtures of non-ionic surfactants and anionic surfactants, mixtures
of non-ionic surfactants and cationic surfactants, and mixtures of
non-ionic surfactants and zwitterionic surfactants.
[0023] Anionic surfactants useful herein are disclosed in U.S. Pat.
No. 4,285,841, Barrat et al, issued Aug. 25, 1981, and in U.S. Pat.
No. 3,919,678, Laughlin et al, issued Dec. 30, 1975. Preferred
anionic surfactants include C.sub.11-C.sub.18 alkyl benzene
sulfonates and primary or branched-chain C.sub.10-C.sub.20 alkyl
sulfates, unsaturated sulfates such as oleyl sulfate, the C.sub.10
-C.sub.18 alkyl alkoxy sulfates, particularly those comprising 1-7
ethoxy groups, C.sub.10 -C.sub.18 alkyl alkoxy carboxylates,
particularly those comprising 1-5 ethoxy groups, the C.sub.10
-C.sub.18 glycerol ethers, the C.sub.10-C.sub.18 alkyl
polyglycosides and their corresponding sulfated polyglycosides, and
C.sub.12-C.sub.18 alpha-sulfonated fatty acid esters. Other useful
anionic surfactants include water-soluble salts, particularly the
alkali metal, ammonium and alkylolammonium salts, such as
monoethanolammonium or triethanolammonium salts, of organic
sulfuric reaction products having in their molecular structure an
alkyl group containing from about 10 to about 20 carbon atoms and a
sulfonic acid or sulfuric acid ester group. Other anionic
surfactants useful herein are the water-soluble salts of alkyl
phenol ethylene oxide ether sulfates and water-soluble salts of
esters of alpha-sulfonated fatty acids. The anionic surfactants
based on fatty acids include saturated and/or unsaturated fatty
acids obtained from natural sources or synthetically prepared.
Examples of suitable fatty acids include, but are not limited to,
capric, lauric, myristic, palmitic, stearic, arachidic, and behenic
acid. Other fatty acids include palmitoleic, oleic, linoleic,
linolenic, and ricinoleic acid.
[0024] Suitable nonionic surfactants are disclosed in U.S. Pat. No.
3,929,678, Laughlin et al., issued Dec. 30, 1975, and U.S. Pat. No.
4,285,841, Barrat et al, issued Aug. 25, 1981. Exemplary,
non-limiting classes of useful nonionic surfactants include
C.sub.8-C.sub.18 alkyl ethoxylates, with about 1-22 ethylene oxide
units, including the so-called narrow peaked alkyl ethoxylates and
C.sub.6-C.sub.12 alkyl phenol alkoxylates, particularly ethoxylates
and mixed ethoxylates/propoxylates, alkyl dialkyl amine oxides,
alkanoyl glucose amides, and mixtures thereof. Other useful
nonionic surfactants are polyethylene, polypropylene, and
polybutylene oxide condensates of alkyl phenols. Commercially
available nonionic surfactants of this type include Igepal.RTM.
CO-630, marketed by the GAF Corporation; and Triton.RTM. X45,
X-114, X-100, and X-102, all marketed by the Rohm & Haas
Company. These compounds are commonly referred to as alkyl phenol
alkoxylates, preferably alkyl phenol ethoxylates. Further useful
nonionic surfactants are the condensation products of aliphatic
alcohols with from about 1 to about 25 moles of ethylene oxide. The
alkyl chain of the aliphatic alcohol can either be straight or
branched, primary or secondary, and generally contains from about 8
to about 22 carbon atoms. Examples of commercially available
nonionic surfactants of this type include Tergitol.RTM. 15-S-9 (the
condensation product of C.sub.11-C.sub.15 linear secondary alcohol
with 9 moles ethylene oxide), Tergitol.RTM. 24-L-6 NMW (the
condensation product of C.sub.12-C.sub.14 primary alcohol with 6
moles ethylene oxide with a narrow molecular weight distribution),
both marketed by The Dow Chemical Corporation; Neodol.RTM. 45-9
(the condensation product of C.sub.14-C.sub.15 linear alcohol with
9 moles of ethylene oxide), Neodol.RTM. 23-6.5 (the condensation
product of C.sub.12-C.sub.13 linear alcohol with 6.5 moles of
ethylene oxide), Neodol.RTM. 45-7 (the condensation product of
C.sub.14-C.sub.15 linear alcohol with 7 moles of ethylene oxide),
Neodol.RTM. 45-4 (the condensation product of C.sub.14-C.sub.15
linear alcohol with 4 moles of ethylene oxide), marketed by Shell
Chemical Company, and Kyro.RTM. EOB (the condensation product of
C.sub.13-C.sub.15 alcohol with 9 moles ethylene oxide), marketed by
The Procter & Gamble Company. Other commercially available
nonionic surfactants include Dobanol 91-8.RTM. marketed by Shell
Chemical Co. and Genapol UD-080.RTM. marketed by Hoechst. This
category of nonionic surfactant is referred to generally as "alkyl
ethoxylates." Other useful nonionic surfactants are the
condensation products of ethylene oxide with a hydrophobic base
formed by the condensation of propylene oxide with propylene
glycol. Examples of compounds of this type include certain of the
commercially-available Pluronic.RTM. surfactants, marketed by BASF.
Further useful surfactants are the condensation products of
ethylene oxide with the product resulting from the reaction of
propylene oxide and ethylenediamine. Examples of this type of
nonionic surfactants include certain of the commercially available
Tetronic.RTM. compounds, marketed by BASF. Semi-polar nonionic
surfactants are a special category of nonionic surfactants which
include water-soluble amine oxides. These amine oxide surfactants
in particular include C.sub.10-C.sub.18 alkyl dimethyl amine oxides
and C.sub.8-C.sub.12 alkoxy ethyl dihydroxy ethyl amine oxides.
Other nonionic surfactants are alkylpolysaccharides. Any reducing
saccharide containing 5 or 6 carbon atoms can be used, e.g.,
glucose, galactose and galactosyl moieties can be substituted for
the glucosyl moieties. Fatty acid amide surfactants,
C.sub.12-C.sub.18 betaines and sulfobetaines (sultaines) are also
knows surfactants.
[0025] Suitable cationic surfactants include the ammonium
surfactants such as alkyltrimethyl ammonium halogenides. Examples
of suitable quaternary ammonium compounds include, but are not
limited to, coconut trimethyl ammonium chloride or bromide; coconut
methyl dihydroxyethyl ammonium chloride or bromide; decyl triethyl
ammonium chloride; decyl dimethyl hydroxyethyl ammonium chloride or
bromide; C.sub.12-15 dimethyl hydroxyethyl ammonium chloride or
bromide; coconut dimethyl hydroxyethyl ammonium chloride or
bromide; myristyl trimethyl ammonium methyl sulphate; lauryl
dimethyl benzyl ammonium chloride or bromide; lauryl dimethyl
(ethenoxy) 4 ammonium chloride or bromide; and choline esters.
[0026] Further useful surfactants are amine oxide surfactants.
Commercially available amine oxides are the solid, dihydrate ADMOX
16 and ADMOX 18, ADMOX 12 and especially ADMOX 14 from Ethyl Corp.
Other surfactants include dodecyidimethylamine oxide dihydrate,
hexadecyidimethylamine oxide dihydrate, octadecyidimethylamine
oxide dihydrate, hexadecyltris(ethyleneoxy)dimethyl-amine oxide,
tetradecyidimethylamine oxide dihydrate, and mixtures thereof.
[0027] Other useful surfactants are biodegradably branched
surfactants are more fully disclosed in WO98/23712 A published Jun.
4, 1998; WO97/38957 A published Oct. 23, 1997; WO97/38956 A
published Oct. 23, 1997; WO97/39091 A published Oct. 23, 1997;
WO97/39089 A published Oct. 23, 1997; WO97/39088 A published Oct.
23, 1997; WO97/39087 A1 published Oct. 23, 1997; WO97/38972 A
published Oct. 23, 1997; WO 98/23566 A Shell, published Jun. 4,
1998.
[0028] Useful amphophilic surfactants can be broadly described as
aliphatic derivatives of secondary or tertiary amines, or aliphatic
derivatives of heterocyclic secondary and tertiary amines in which
the aliphatic radical can be straight chain or branched.
[0029] Furthermore, the cosmetic microemulsion compositions
described herein may contain a polyhydroxy fatty acid amide
surfactant. Useful zwitterionic surfactants are described in U.S.
Pat. No. 3,929,678. Diamine surfactants may also be used.
[0030] Examples of particularly preferred surfactants are
ethyloxalated alkanes, fatty acids, fatty acid salts, sulfonates or
quaternary ammonium salts, and especially polyoxyethylene fatty
ether surfactants, stearic acid and stearic acid salts, most
preferably the sodium salt of stearic acid, sodium lauryl sulfate
(SLS), sodium laureth sulfate (SLES), lauryl trimethyl ammonium
chloride, Brij 30 (trademark of Uniqema, Chemical Abstracts name
Poly(oxy-1,2-ethanediyl), alpha-dodecyl-omega-hydroxy- (9CI),
Registery Number 9002-92-0), cetyl trimethyl ammonium chloride, or
combinations thereof.
[0031] The amount of surfactant which may be used in the
composition of the present invention is generally from 0 wt. % to
about 50 wt. %, preferably from 0 wt. % to about 20 wt. %, more
preferably from 0 to about 15 wt.% and most preferably from 0 to
about 10 wt.%; and when the surfactant is present in the
composition, the amount of surfactant is preferably from about 0.1
wt. % to about 15 wt. %, and more preferably from about 0.5 wt. %
to about 10 wt. %.
[0032] The weight ratio between the fragrance material and the
surfactant, if present in the composition of the present invention,
generally is from 0.2:1 to 10:1, preferably from 0.5:1 to 6:1, more
preferably from 1:1 to 5:1, and most preferably from 2:1 to
4:1.
[0033] Other ingredients that may optionally be present in the
composition of the present invention may include for example
antioxidants, chelating agents, UV filters, and preservatives.
Additional ingredients such as thickening agents, cosmetic active
ingredients, moisturizers, humectants, emollients, opacifiers,
pearly gloss impacting substances, pigments, colorants, dyes and
antifoams may also be optionally used in the composition of the
present invention.
[0034] The optional additional ingredients are generally present in
the composition of the present invention from about 0 wt % to about
5 wt %, preferably from about 0.5 wt % to about 3 wt %, and more
preferably from about 0.1 wt % to about 1 wt %.
[0035] In one illustration of the composition of the present
invention, the composition advantageously includes 1,2-hexanediol
in a proportion of from about 5 wt % to 30 wt %; a surfactant,
wherein the surfactant is preferably a combination of (i) Brij 30
in a proportion of approximately 0.5 wt % to 5.0 wt % and (ii)
stearic acid, sodium lauryl sulfate, sodium laureth sulfate, cetyl
trimethyl ammonium chloride or a stearic acid salt in a proportion
of approximately 0.5 wt % to 5.0 wt %; and an essential oil in a
proportion of approximately 0.5 wt % to 20 wt %; with the remainder
being essentially purified water.
[0036] All percentages given herein are by the total weight of the
perfumed aqueous microemulsion composition.
[0037] The microemulsion perfumed aqueous cosmetic composition
according to the present invention may be prepared, for example, by
simple mixing of all the ingredients; for example by hand stirring
or if need be by using a mechanical mixer (i.e. by some
mechanically agitating means), the components of the present
invention, and any optional components, to form a homogeneous
mixture. The components of the present invention may be added
together into a suitable reaction vessel and mixed in any order,
using conventional processes well known to those skilled in the
art. The microemulsion may be produced at room temperature or at an
elevated temperature, for example up to 90.degree. C., preferably
up to 55.degree. C. can be employed.
[0038] The perfume microemulsion compositions of the present
invention containing 1,2-hexanediol are uniquely useful. The
1,2-hexanediol as a cosolvent has low odor, pleasant skin feel, and
can be formulated as clear stable perfumes with high fragrance
loading, in several different product forms.
[0039] Because 1,2-hexanediol has very low odor it does not change
the olfactory profile of the perfume. This allows perfumers to
retain the desired odor profile of fully formulated perfumes.
[0040] The 1,2-hexanediol containing perfume microemulsions contain
low or no surfactant and as such are pleasant to use with a smooth
emollient-like feel without the greasy or tackiness of most
presently known perfume microemulsions.
[0041] 1,2-Hexanediol is known to be an acceptable cosmetic
ingredient by CTFC and INCI. The use of 1,2-hexanediol as a
microemulsion cosolvent is described in U.S. Pat. No. 6,498,197 and
U.S. Patent Application Publication No. US2004/0077776 A1 for
silicone microemulsions suitable for cosmetics. Clear hair
conditioning microemulsions including 1,2-hexanediol cosolvent are
described in U.S. Patent Application Publication No. US2001/0053374
A1. However, 1,2-hexanediol has never been developed as a cosolvent
for a perfume microemulsion, 1,2-hexanediol's unexpected sensory
benefits were unknown, and the use of 1,2-hexanediol in
surfactant-free compositions were unknown prior to the present
invention.
[0042] The 1,2-hexanediol containing perfume microemulsions can be
formulated to be optically clear, and stable from about 5.degree.
C. to about 55.degree. C.; and to contain a wide variety of
fragrance loadings, for example, from about 1 percent by weight to
about 30 percent by weight essential oils.
[0043] Fragrances, Eaux de Toilettes, aqueous perfumes, body
sprays, body deodorants as well as products such as refreshing and
cleaning wet towels, aqueous cosmetic compositions, household
cleaners, air fresheners and sprayable formulations all require
different fragrance loading, and are all easily made using the
present invention. A single properly formulated perfume
microemulsion containing 1,2-hexanediol may be diluted for example
from about 50 wt. %, preferably from about 30 wt. % to about 1 wt.
% with no loss of stability, i.e. the resulting product is
maintained as a microemulsion. Furthermore, perfume microemulsions
containing 1,2-hexanediol can be made stable in spite of the
addition of other ingredients such as dyes, gelling agents,
iridescent material or sparkling materials.
[0044] The following examples are given to illustrate the present
invention. Because these examples are given for illustrative
purposes only, the present invention embodied herein should not be
limited thereto.
[0045] Examples of perfumed aqueous cosmetic compositions according
to the present invention are given below by way of non-limitative
illustration. Onless otherwise indicated all parts and percentages
are by weight.
EXAMPLE 1
[0046] The ingredients used in this Example 1 were as follows:
[0047] Surfactants: Brij 30 (trademark of Uniqema) [0048] Sodium
Stearate
[0049] Cosolvent: 1,2-hexanediol
[0050] Aqueous Medium: Water
[0051] Fragrance: MUSTANG M 0054401
General Procedure
[0052] Into a 15 mL glass container, 0.1 g of stearic acid, 0.1 g
of Brij 30, 1 g of 1,2-hexanediol, and 0.35 g of a 1 N NaOH
solution are introduced at room temperature (about 20.degree.
C.).
[0053] The resulting blend in the container is gently shaken while
heated up to 40-50.degree. C. until a clear homogeneous solution is
obtained. This takes only a few minutes (about less than 5
minutes). The container is cooled back to room temperature in a
water bath. Once at room temperature, 0.6 g of MUSTANG M 0054401 is
added to the container. Again, a clear homogeneous solution is
obtained.
[0054] Then 7.6 g of pure water is added to the container. Towards
the end of addition of water, the solution becomes turbid (milky
white). Dropwise addition of 1,2-hexanediol is carried out until
the solution becomes optically clear and homogeneous. It takes
0.238 g of 1,2-hexanediol to achieve the optically clear and
homogenoous solution.
[0055] The weight composition of the resulting aqueous perfume
produced according to the above general procedure is as
follows:
[0056] 12.36% 1,2-hexanediol
[0057] 1% Brij 30
[0058] 1% stearic acid
[0059] 6% MUSTANG M 0054401
[0060] 79.51% water
[0061] 0.14% NaOH
EXAMPLE 2
[0062] Using the same general procedure as described in Example 1
above, 220 g of a 6% stabilized MUSTANG M 0054401 aqueous perfume
were produced in this Example 2 with the following quantities of
raw materials:
[0063] 28.48 g 1,2-hexanediol (12.98%)
[0064] 2.32 g Brij 30 (1.06%)
[0065] 2.32 g stearic acid (1.06%)
[0066] 13.95 g MUSTANG M 0054401* (6.36%) *containing 0.3% UV
filter and 0.1% antioxidant
[0067] 172.02 g water** (78.40%) **water contained 0.2% Biocide and
0.1% EDTA
[0068] 0.33 g NaOH pure (0.15%)
EXAMPLE 3
[0069] The same ingredients and general procedure as described in
Example 1 were used in this Example 3, except that the fragrance
was BLISS M 0054403, to produce an aqueous perfume having the
following composition:
[0070] 10.27% 1,2-hexanediol (22.59 g)
[0071] 0.57% Brij 30 (1.247 g)
[0072] 0.57% stearic acid (1.247 g)
[0073] 3.40% BLISS M 0054403* (7.48 g) *containing 0.3% UV filter
and 0.1% antioxidant
[0074] 85.11% stabilized water** (187.18 g) **water contained 0.2%
Biocide and 0.1% EDTA
[0075] 0.08% pure NaOH (0.175 g)
EXAMPLE 4
[0076] The same ingredients and general procedure as described in
Example 1 were used in this Example 4, except that THOMAS M0054402
fragrance was used, to produce an aqueous perfume having the
following composition:
[0077] 11.45% 1,2-hexanediol (25.08 g)
[0078] 0.42% Brij 30 (0.918 g)
[0079] 1.68% stearic acid (3.673 g)
[0080] 6.29% THOMAS M0054402* (13.77 g) *containing 0.3% UV filter
and 0.1% antioxidant
[0081] 79.94% water** (175.13 g) **water contained 0.2% Biocide and
0.1% EDTA
[0082] 0.24% pure NaOH (0.516 g)
EXAMPLE 5
[0083] Similar ingredients and the same general procedure as
described in Example 1 were used in this Example 5, except that
CITRUS FUSION M 0054405 fragrance was used, to produce an aqueous
perfume having following composition:
[0084] 7.71% 1,2-hexanediol (0.5 g)
[0085] 3.86% Brij 30 (0.25 g)
[0086] 3.86% stearic acid (0.25 g)
[0087] 23.14% CITRUS FUSION M 0054405 (1.5 g)
[0088] 59.40% water (175.13 g)
[0089] 2.02% triethanolamine (0.131 g)
EXAMPLE 6
[0090] The same general procedure as described in Example 1 was
used in this Example 6, except that 1,2-hexanediol, CRACK M 0054404
fragrance and water were used to produce an aqueous perfume having
the following surfactant-free composition:
[0091] 19.08% 1,2-hexanediol (0.95 g)
[0092] 16.07% CRACK M 0054404 (0.80 g)
[0093] 64.85% water (3.23 g)
EXAMPLE 7
[0094] Using the same general procedure as described in Example 1,
5 g of a 5% stabilized LEA* M 0045414 aqueous perfume were produced
with the following quantities of raw materials:
[0095] 0.73 g 1,2-hexanediol (14.6%)
[0096] 0.042 g Brij 30 (0.83%) 0.042 g stearic acid (0.83%)
[0097] 0.25 g LEA* M 0045414 (5.00%) *containing 0.3% UV filter and
0.1% antioxidant
[0098] 3.93 g water** (78.62%) **water contained 0.2% Biocide and
0.1% EDTA
[0099] 0.006 g NaOH pure (0.12%)
[0100] Stearic acid can be replaced by SLS (sodium lauryl sulfate)
or cetyl trimethyl ammonium chloride as shown in Examples 8 and
9.
EXAMPLE 8
[0101] Into a 15 mL glass container, 0.139 g of SLS (sodium lauryl
sulfate, 30% active in water), 0.042 g of Brij 30, 0.2 g of
1,2-hexanediol, and 0.5 g of water were introduced at room
temperature (about 20.degree. C.).
[0102] The resulting blend in the container was gently shaken to
afford a clear homogeneous solution. This took less than 5 minutes.
0.25 g of LEA* M 0045414 fragrance was added to the container which
was gently shaken to homogenize. A clear homogeneous solution was
obtained.
[0103] Then 3.34 g of pure water was added to the container.
Towards the end of addition of water, the solution became turbid
(milky white). Dropwise addition of 1,2-hexanediol was carried out
until the solution became optically clear and homogeneous. It took
0.54 g of 1,2-hexanediol to achieve an optically clear, transparent
microemulsion.
[0104] The weight composition of the resulting aqueous perfume
produced according to the above procedure was as follows:
[0105] 14.80% 1,2-hexanediol
[0106] 0.84% Brij 30
[0107] 0.84% SLS
[0108] 4.99% LEA* M 0045414
[0109] 78.54% water.
[0110] The composition of the aqueous microemulsion was very
similar to the composition of Example 7, except that no sodium
hydroxide was used and no heat was applied to prepare the
sample.
EXAMPLE 9
[0111] Into a 15 mL glass container, 0.167 g of cetyl trimethyl
ammonium chloride (25% active in water), 0.042 g of Brij 30, 0.2 g
of 1,2-hexanediol, and 0.5 g of water were introduced at room
temperature (about 20.degree. C.).
[0112] The resulting blend in the container was gently shaken to
afford a clear homogeneous solution. This took less than 5 minutes.
0.25 g of LEA* M 0045414 was added to the container which was
gently shaken to homogeneise. A clear homogeneous solution was
obtained. Then 3.34 g of pure water was added to the container.
Towards the end of addition of water, the solution became turbid
(milky white). Dropwise addition of 1,2-hexanediol was carried out
until the composition became optically clear. It took 0.537 g of
1,2-hexanediol to achieve an optically clear and transparent
microemulsion.
[0113] The weight composition of the resulting aqueous perfume
produced according to the above procedure was as follows:
[0114] 14.72% 1,2-hexanediol
[0115] 0.84% Brij 30
[0116] 0.84% cetyl trimethyl ammonium chloride
[0117] 4.99% LEA* M 0045414
[0118] 78.61% water
[0119] The composition of the aqueous microemulsion of Example 9
was very similar to the composition of Example 7, except that no
sodium hydroxide was used and no heat applied to prepare the
sample.
EXAMPLE 10
[0120] Similar ingredients and the same general procedure as
described in Example 7 were used in this Example 10, except that
CITRUS FUSION M 0054405 fragrance was used, to produce an aqueous
perfume having following composition:
[0121] 7.96% 1,2-hexanediol (0.400 g)
[0122] 0.83% Brij 30 (0.042 g)
[0123] 0.83% stearic acid (0.042 g)
[0124] 4.98% CITRUS FUSION M 0054405 (0.250 g)
[0125] 85.29% water (4.286 g)
[0126] 0.12% NaOH pure (0.006 g)
[0127] Stearic acid can be replaced by SLS (sodium lauryl sulfate)
or cetyl trimetyl ammonium chloride as shown in Examples 11 and
12.
EXAMPLE 11
[0128] Similar ingredients and the same general procedure as
described in Example 8 were used in this Example 11, except that
CITRUS FUSION M 0054405 fragrance was used, to produce an aqueous
perfume having following composition:
[0129] 9.53% 1,2-hexanediol (0.45 g)
[0130] 0.89% Brij 30 (0.042 g)
[0131] 0.89% SLS (0.042 g)
[0132] 5.30% CITRUS FUSION M 0054405 (0.25 g)
[0133] 83.39% water (3.937 g)
[0134] The composition of the aqueous microemulsion of Example 11
was very similar to the composition of Example 10, except that no
sodium hydroxide was used and no heat applied to prepare the
sample.
EXAMPLE 12
[0135] Similar ingredients and the same general procedure as
described in Example 9 were used in this Example 12, except that
CITRUS FUSION M 0054405 fragrance was used, to produce an aqueous
perfume having the following composition:
[0136] 10.05% 1,2-hexanediol (0.477 g)
[0137] 0.88% Brij 30 (0.042 g)
[0138] 0.88% cetyl trimethyl ammonium chloride (0.042 g)
[0139] 5.27% CITRUS FUSION M 0054405 (0.25 g)
[0140] 82.92% water (3.937 g)
[0141] The composition of the aqueous microemulsion of Example 12
was very similar to composition of Example 10, except that no
sodium hydroxide was used and no heat was applied to prepare the
sample.
EXAMPLE 13
[0142] Similar ingredients and the same general procedure as
described in Example 8 were used in this Example 13, except that
1,2-heptane diol instead of 1,2-hexane diol was used to produce an
aqueous perfume the having following composition:
[0143] 11.78% 1,2-heptane diol
[0144] 0.91% Brij 30
[0145] 0.81% SLS (sodium lauryl sulfate)
[0146] 5.14% fragrance LEA I 871382 DPG free
[0147] 81.37% water.
[0148] An optically clear and transparent microemulsion was
obtained.
EXAMPLE 14
[0149] Similar ingredients and the same general procedure as
described in Example 8 were used in this Example 14, except that
1,2-heptane diol instead of 1,2-hexane diol was used to produce an
aqueous perfume having following composition:
[0150] 17.12% 1,2-hexane diol
[0151] 0.88% Brij 30
[0152] 0.78% SLS (sodium lauryl sulfate)
[0153] 4.86% fragrance LEA I 871382 DPG free
[0154] 76.36% water.
An optically clear and transparent microemulsion was obtained.
[0155] While the present invention has been particularly shown and
described with respect to preferred embodiments thereof, it will be
understood by those skilled in the art that the foregoing and other
changes in the form and detail may be made without departing from
the spirit and scope of the present invention. It is therefore
intended that the present invention not be limited to the exact
forms and details described and illustrated, but fall within the
appended claims.
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