The present invention relates to cosmetic compositions containing, in combination, at least one polyorganosiloxane and an acrylic terpolymer, as well as to the use of these compositions for treating keratinous material.
Silicones are cosmetic products which are particularly sought for their conditioning properties and their softening and disentangling properties, in particular in hair formulations.
When certain silicones are used, such as those which are insoluble in aqueous medium, it is often necessary to introduce them in a thickened or gelled support in order to keep them in suspension and to obtain a stable composition.
It is also important to have available non-pasty, non-greasy compositions which spread well on the skin and the hair.
With the aim of obtaining a thickened or gelled support, thickening and/or gelling polymers are used. Gelling polymers are known which contain in their chain a hydrophilic part and a hydrophobic part consisting of a fatty chain, such as the product xe2x80x9cPemulen TR1xe2x80x9d sold by the company Goodrich or the xe2x80x9cAcrysolxe2x80x9d polymers sold by the company Rohm and Haas. The polymer xe2x80x9cPemulen TR1xe2x80x9d gives formulations of pasty texture which do not spread well. The polymer xe2x80x9cAcrysolxe2x80x9d does not have good gelling power and gives cloudy, unstable formulations.
The Applicant has discovered, surprisingly, that by using a novel family of thickening and/or gelling polymers and by combining them with polyorganosiloxanes, cosmetic formulations which have a satisfactory viscosity at a relatively low pH, which are stable, non-greasy, non-pasty and which spread well on the skin and the hair can be obtained.
The subject of the present invention is thus cosmetic compositions containing, in a cosmetically acceptable aqueous support, at least one polyorganosiloxane and an acrylic terpolymer which will be defined in greater detail later in the description.
This polymer makes it possible in particular to prepare rinse-out or leave-in, aqueous or aqueous-organic compositions containing cosmetically acceptable solvents, ranging from slightly gelled products to solid sticks or tubes.
The advantages of this terpolymer are that it is stable in electrolytic medium and has very good thickening power at a pH equal to or above 5.5, which allows a good level of viscosity to be achieved and allows high concentrations of alcohol to be used.
When used in combination with at least one polyorganosiloxane, this polymer makes it possible to prepare gelled, non-pasty products which are easy to spread, feel soft when applied and are stable on storage.
It also makes it possible to improve the conditioning effect of silicones on the hair, in particular their feel, their softness and their disentangling ability.
The acrylic terpolymer used in accordance with the invention is soluble or swellable in alkalis. It is characterized in that it comprises:
a) about 20 to 70% by weight, preferably 25 to 55% by weight, of a carboxylic acid containing xcex1,xcex2-monoethylenic unsaturation;
b) about 20 to 80% by weight, preferably 30 to 65% by weight, of a non-surfactant monomer containing monoethylenic unsaturation, which is different from a), and
c) about 0.5 to 60% by weight, preferably 10 to 50% by weight, of a nonionic urethane monomer which is the product of reaction of a monohydric nonionic surfactant with a monoisocyanate containing monoethylenic unsaturation.
The carboxylic acid containing xcex1,xcex2-mono-ethylenic unsaturation a) can be chosen from many acids and in particular acrylic acid, methacrylic acid, itaconic acid and maleic acid. Methacrylic acid is preferred. A large proportion of acid is essential in order to give a polymer structure which dissolves and gives a thickening effect by reaction with an alkaline compound such as sodium hydroxide, alkanolamines, aminomethylpropanol or aminomethylpropanediol.
The terpolymer should also contain a large proportion, indicated above, of a monomer b) containing monoethylenic unsaturation which has no surfactant properties. The preferred monomers are those which give polymers that are water-insoluble when they are homopolymerized and are illustrated by C1-C4 alkyl acrylates such as methyl acrylate, ethyl acrylate and butyl acrylate, or corresponding methacrylates. The monomers more particularly preferred are methyl and ethyl acrylates. Other monomers which can be used are styrene, vinyltoluene, vinyl acetate, acrylonitrile and vinylidene chloride. Non-reactive monomers are preferred, such monomers being those in which the single ethylenic group is the only group which is reactive under the polymerization conditions. However, monomers which contain groups that are reactive under the action of heat can be used in certain situations, such as hydroxyethyl acrylate.
The monohydric nonionic surfactants used to obtain the nonionic urethane monomer c) are well known and are generally alkoxylated hydrophobic compounds containing an alkylene oxide forming the hydrophilic part of the molecule. The hydrophobes generally consist of an aliphatic alcohol or an alkylphenol in which a carbon chain containing at least six carbon atoms constitutes the hydrophobic part of the surfactant.
The preferred monohydric nonionic surfactants have the formula: 
in which R is a C6-C30 alkyl or C8-C30 aralkyl group, Rxe2x80x2 is a C1-C4 alkyl group, n is an average number ranging approximately from 5 to 150 and m is an average number ranging approximately from 0 to 50, with the condition that n is at least as large as m and that n+m=5-150.
As preferred C6-C30 alkyl groups, mention may be made of dodecyl and C18-C26 alkyl radicals. As aralkyl groups, mention may be made more particularly of (C8-C13)alkylphenyl groups. The preferred group Rxe2x80x2 is the methyl group.
The monoisocyanate containing monoethylenic unsaturation which is used to form the nonionic urethane monomer c) can be chosen from a wide variety of compounds. A compound containing any copolymerizable unsaturation such as acrylic or methacrylic unsaturation can be used. An allylic unsaturation imparted by allyl alcohol can also be used. The preferred monoethylenic monoisocyanate is xcex1,xcex1-dimethyl-m-isopropenyl-benzylisocyanate.
The acrylic terpolymer defined above is obtained by aqueous emulsion copolymerization of the components a), b) and c) which is entirely common and described in patent application EP-A-0,173,109.
As terpolymers which can be used according to the invention, mention may be made of the products of reaction of methacrylic acid as component a), of ethyl acrylate as component b) and of a nonionic urethane macromonomer as component c), having the following structure: 
in which pxe2x80x2 ranges from 6 to 150 and is preferably equal to 30 and R2 is a C8-C13 alkyl radical, such as that described in Example 3 of patent application EP-A-0,173,109.
The preferred acrylic terpolymer used according to the invention is obtained from methacrylic acid as component a), methyl acrylate as component b) and a nonionic urethane macromonomer as component c), having the following structure: 
in which p ranges from 6 to 150 and R1 is a C18-C26, alkyl radical preferably C20-C24, linear of plant origin, such as the docosyl radical.
The acrylic terpolymer is present in the cosmetic compositions of the invention in concentrations ranging from 0.01 to 20% by weight relative to the total weight of the composition, and preferably from 0.1 to 10% by weight.
The modified or non-modified polyorganosiloxanes used in the compositions according to the present invention are polyorganosiloxane oils or polyorganosiloxane gums or resins, in their natural state or in the form of solutions in organic solvents, or alternatively in the form of emulsions or microemulsions.
Among the polyorganosiloxanes used in accordance with the present invention, mention may be made, in a non-limiting manner, of:
I. Volatile Silicones
These have a boiling point of between 60xc2x0 C. and 260xc2x0 C. They are chosen from cyclic silicones containing from 3 to 7 and preferably 4 to 5 silicon atoms. They are, for example, octamethylcyclotetrasiloxane sold under the name xe2x80x9cVolatile Silicone 7207xe2x80x9d by Union Carbide or xe2x80x9cSilbione 70045 V2xe2x80x9d by Rhxc3x4ne-Poulenc, decamethylcyclopentasiloxane sold under the name xe2x80x9cVolatile Silicone 7158xe2x80x9d by Union Carbide, xe2x80x9cSilbione 70045 V5 by Rhxc3x4ne-Poulenc, and mixtures thereof.
Mention is also made of cyclocopolymers of the dimethylsiloxane/methylalkylsiloxane type, such as xe2x80x9cVolatile Silicone FZ 3109xe2x80x9d sold by the company Union Carbide, which is a dimethylsiloxane/methyloctylsiloxane cyclocopolymer.
II. Non-volatile Silicones
These consist mainly of:
(i) polyalkylsiloxanes;
(ii) polyarylsiloxanes;
(iii) polyalkylarylsiloxanes;
(iv) silicone gums;
(v) silicone resins;
(vi) organomodified polyorganosiloxanes;
(vii) block copolymers having a polysiloxanepolyalkylene linear block as repeating unit;
(viii) grafted silicone polymers containing a non-silicone organic skeleton, consisting of an organic main chain formed from organic monomers not containing silicone, onto which is grafted, within the said chain as well as, optionally, on at least one of its ends, at least one polysiloxane macromonomer;
(ix) grafted silicone polymers containing a polysiloxane skeleton, grafted with non-silicone organic monomers, comprising a polysiloxane main chain onto which is grafted, within the said chain as well as, optionally, on at least one of its ends, at least one organic macromonomer containing no silicone;
(x) or mixtures thereof.
Among the polyalkylsiloxanes, mention may be made mainly of linear polydimethylsiloxanes containing trimethylsilyl end groups, such as, for example, and in a non-limiting manner, the xe2x80x9cSilbionexe2x80x9d oils of the 70047 series sold by Rhxc3x4ne-Poulenc; the oil xe2x80x9c47 V 500 000xe2x80x9d from Rhxc3x4ne-Poulenc or certain xe2x80x9cViscasilxe2x80x9d oils from General Electric or xe2x80x9cMirasilxe2x80x9d oils from Rhxc3x4ne-Poulenc, and linear polydimethylsiloxanes containing hydroxydimethylsilyl end groups, such as the oils of the 48 V series from Rhxc3x4ne-Poulenc.
In this class of polyalkylsiloxanes, mention may also be made of the polyalkylsiloxanes sold by the company Goldschmidt under the names xe2x80x9cAbilwax 9800xe2x80x9d and xe2x80x9cAbilwax 9801xe2x80x9d, which are poly(C1-C20)alkylsiloxanes.
Among the polyalkylarylsiloxanes, mention may be made of linear and branched polymethylphenylsiloxanes, polydimethylmethylphenylsiloxanes and polydimethyldiphenylsiloxanes, such as, for example:
the oil xe2x80x9cRhodorsil 763xe2x80x9d from Rhxc3x4ne-Poulenc,
the oils xe2x80x9cSilbione 70641 V 30 and 70641 V 200xe2x80x9d from Rhxc3x4ne-Poulenc,
the product xe2x80x9cDC 556 Cosmetic Grade Fluidxe2x80x9d from Dow Corning,
the silicones of the PK series from Bayer, such as xe2x80x9cPK20xe2x80x9d,
the silicones of the PN and PH series from Bayer, such as xe2x80x9cPN 1000xe2x80x9d and PH 1000xe2x80x9d,
certain oils of the SF series from General Electric, such as SF 1250, SF 1265, SF 1154 and SF 1023.
The silicone gums in accordance with the present invention are polydiorganosiloxanes with a molecular mass of between 200,000 and 1,000,000, used alone or as a mixture in a solvent chosen from volatile silicones, polydimethylsiloxane (PDMS) oils, polyphenylmethylsiloxane (PPMS) oils, isoparaffins, methylene chloride, pentane, dodecane, tridecane and tetradecane, or mixtures thereof.
Mention is made, for example, of the following compounds:
polydimethylsiloxane,
poly[(dimethylsiloxane)/(methylvinylsiloxane)],
poly[(dimethylsiloxane)/(diphenylsiloxane)],
poly[(dimethylsiloxane)/(phenylmethylsiloxane)],
poly[(dimethylsiloxane)/(diphenylsiloxane)/(methylvinylsiloxane)].
Mention may be made, for example, in a non-limiting manner, of the following mixtures:
1) mixtures formed from a polydimethylsiloxane hydroxylated at the end of the chain (Dimethiconol according to the CTFA nomenclature) and from a cyclic polydimethylsiloxane (Cyclomethicone according to the CTFA nomenclature), such as the product xe2x80x9cQ2 1401xe2x80x9d sold by the company Dow Corning;
2) mixtures formed from a polydimethylsiloxane gum with a cyclic silicone, such as the product xe2x80x9cSF 1214 Silicone Fluidxe2x80x9d from General Electric, which is an SE 30 gum of MW 500,000 dissolved in xe2x80x9cSF 1202 Silicone Fluidxe2x80x9d (decamethylcyclopentasiloxane);
3) mixtures of two PDMSs of different viscosity, in particular a PDMS gum and a PDMS oil, such as the products xe2x80x9cSF 1236xe2x80x9d and xe2x80x9cCF 1241xe2x80x9d from the company General Electric. The product xe2x80x9cSF 1236xe2x80x9d is a mixture of an SE 30 gum defined above, with a viscosity of 20 m2/s, and of an SF 96 oil with a viscosity of 5xc3x9710xe2x88x925 m2/s (15% SE 30 gum and 85% SF 96 oil). The product xe2x80x9cCF 1241xe2x80x9d is a mixture of an SE 30 gum (33%) and of a PDMS (67%) with a viscosity of 10xe2x88x923 m2/s.
The polyorganopolysiloxane resins which can be used in accordance with the invention are preferably crosslinked siloxane systems containing the units: R2SiO2/2, RSiO3/2 and SiO4/2 in which R represents a hydrocarbon-based group having 1 to 6 carbon atoms or a phenyl group. Among these products, the ones which are particularly preferred are those in which R denotes a lower alkyl radical or a phenyl radical.
Among these resins, mention may be made of the product sold under the name xe2x80x9cDow Corning 593xe2x80x9d or those sold under the names xe2x80x9cSilicone Fluid SS 4230xe2x80x9d and
Among these resins, mention may be made of the product sold under the name xe2x80x9cDow Corning 593xe2x80x9d or those sold under the names xe2x80x9cSilicone Fluid SS 4230xe2x80x9d and xe2x80x9cSS 4267xe2x80x9d by the company General Electric and which are dimethyl/trimethylpolysiloxanes.
The organomodified silicones in accordance with the present invention are silicones as defined above, containing in their general structure one or more organofunctional groups directly attached to the siloxane chain or attached via a hydrocarbon-based radical.
Mention is made, for example, of silicones containing:
a) polyethyleneoxy and/or polypropyleneoxy groups, optionally containing alkyl groups, such as:
the product known as dimethiconecopolyol sold by the company Dow Corning under the name xe2x80x9cDC 1248xe2x80x9d, and alkyl (C12) methiconecopolyol sold by the company Dow Corning under the name xe2x80x9cQ2 5200xe2x80x9d,
the oils xe2x80x9cSilwetxe2x80x9d L 722, L 7500, L 77 and L 711 from the company Union Carbide,
the mixture of dimethiconecopolyol and of cyclomethicone, such as the product sold under the name xe2x80x9cQ2-3225Cxe2x80x9d by the company Dow Corning;
the product xe2x80x9cMirasil DMCOxe2x80x9d sold by Rhxc3x4ne-Poulenc;
b) (per)fluoro groups, for instance trifluoroalkyl groups, such as, for example, those sold by the company General Electric under the names xe2x80x9cFF.150 Fluorosilicone Fluidxe2x80x9d or by the company Shin Etsu under the names xe2x80x9cX-22-819xe2x80x9d, xe2x80x9cX-22-820xe2x80x9d, xe2x80x9cX-22-821xe2x80x9d, xe2x80x9cX-22-822xe2x80x9d or xe2x80x9cFL 100xe2x80x9d;
c) hydroxyacylamino groups, such as those described in European patent application EP-A-0,342,834, and in particular the silicone sold by the company Dow Corning under the name xe2x80x9cQ2-8413xe2x80x9d;
d) thiol groups, such as in the silicones xe2x80x9cX 2-8360xe2x80x9d from Dow Corning or xe2x80x9cGP 72Axe2x80x9d and xe2x80x9cGP 71xe2x80x9d from Genesee; Union Carbide or the silicone known as xe2x80x9cAmodimethiconexe2x80x9d in the CTFA dictionary;
f) carboxylate groups, such as the products described in European patent EP 186,507 from Chisso Corporation;
g) hydroxylated groups, such as the polyorganosiloxanes containing a hydroxyalkyl function, described in patent application FR-A-2,589,476, and in particular polyorganosiloxanes containing a xcex3-hydroxy-propyl function;
h) alkoxylated groups containing at least 12 carbon atoms, such as the product xe2x80x9cSilicone Copolymer F 7551xe2x80x9d from SWS Silicones and the products xe2x80x9cAbilwax 2428xe2x80x9d, xe2x80x9cAbilwax 2434xe2x80x9d and xe2x80x9cAbilwax 2440xe2x80x9d from the company Goldschmidt;
i) acyloxyalkyl groups containing at least 12 carbon atoms, such as, for example, the poly-organosiloxanes described in patent application FR-A-2,641,185, and in particular polyorganosiloxanes containing a stearoyloxypropyl function;
j) quaternary ammonium groups, such as in the products xe2x80x9cX2 81 08xe2x80x9d and xe2x80x9cX2 81 09xe2x80x9d and the product xe2x80x9cAbil K 3270xe2x80x9d from the company Goldschmidt;
k) amphoteric or betaine groups, such as in the product sold by the company Goldschmidt under the name xe2x80x9cAbil B 9950xe2x80x9d;
l) bisulphite groups, such as in the products sold by the company Goldschmidt under the names xe2x80x9cAbil S 201xe2x80x9d and xe2x80x9cAbil S 255xe2x80x9d.
The block copolymers having a polysiloxane-polyoxyalkylene linear block as repeating unit, which are used in the context of the present invention, preferably have the following general formula:
([Y(R2SiO)aRxe2x80x22SiYO][CnH2nO)b])cxe2x80x83xe2x80x83(V)
in which
R and Rxe2x80x2, which may be identical or different, represent a monovalent hydrocarbon-based radical containing no aliphatic unsaturation,
n is an integer ranging from 2 to 4,
a is an integer greater than or equal to 5, preferably between 5 and 200 and even more particularly between 5 and 100,
b is an integer greater than or equal to 4, preferably between 4 and 200 and even more particularly between 5 and 100,
c is an integer greater than or equal to 4, preferably between 4 and 1000 and even more particularly between 5 and 300,
Y represents a divalent organic group which is linked to the adjacent silicon atom via a carbon-silicon bond and to a polyoxyalkylene block via an oxygen atom,
the average molecular weight of each siloxane block is between about 400 and about 10,000, that of each polyoxyalkylene block being between about 300 and about 10,000,
the siloxane blocks represent from about 10% to about 95% of the weight of the block copolymer,
the average molecular weight of the block copolymer being at least 3000 and preferably between 5000 and 1,000,000 and even more particularly between 10,000 and 200,000.
R and Rxe2x80x2 are preferably chosen from the group comprising alkyl radicals such as, for example, the methyl, ethyl, propyl, butyl, pentyl, hexyl, octyl, decyl and dodecyl radicals, aryl radicals such as, for example, phenyl and naphthyl, aralkyl radicals such as, for example, benzyl and phenethyl, and tolyl, xylyl and cyclohexyl radicals.
Y is preferably xe2x80x94Rxe2x80x3xe2x80x94, xe2x80x94Rxe2x80x3xe2x80x94COxe2x80x94, xe2x80x94Rxe2x80x3xe2x80x94NHCOxe2x80x94, xe2x80x94Rxe2x80x3xe2x80x94NHxe2x80x94COxe2x80x94NHxe2x80x94Rxe2x80x3xe2x80x94NHCO or xe2x80x94Rxe2x80x3xe2x80x94OCONHxe2x80x94Rxe2x80x2xe2x80x3xe2x80x94NHCOxe2x80x94, where Rxe2x80x3 is a divalent alkylene group such as, for example, ethylene, propylene or butylene, and Rxe2x80x2xe2x80x3is a divalent alkylene group or a divalent arylene group such as xe2x80x94C6H4, xe2x80x94C6H4C6H4xe2x80x94, C6H4xe2x80x94CH2xe2x80x94C6H4, C6H4xe2x80x94C(CH3)2xe2x80x94C6H4xe2x80x94.
Even more preferably, Y represents a divalent alkylene radical, more particularly the xe2x80x94CH2xe2x80x94CH2xe2x80x94CH2xe2x80x94radical or the xe2x80x94C4H8xe2x80x94 radical.
The preparation of the block copolymers used in the context of the present invention is described in European application EP 0,492,657 A1, the teaching of which is included by way of reference in the present description.
The preferred polysiloxane-polyoxyalkylene linear block copolymers according to the invention are chosen from those of formula:
[C4H8O(CnH2nO)b(CmH2mO)dxe2x80x94C4H8xe2x80x94SiMe2O(SiMe2)aSiMe2]cxe2x80x83xe2x80x83(VI)
where Me represents methyl, n and m are integers ranging from 2 to 4, a is an integer greater than or equal to 4, or preferably between 5 and 200, b and d are integers greater than or equal to 0, preferably between 4 and 200, b+d is greater than or equal to 4, preferably between 4 and 200, and c is an integer greater than or equal to 4, preferably between 4 and 1000.
Among these copolymers, the ones more particularly used are those having a repeating unit of formula:
[xe2x80x94(SiMe2O)xSiMe2xe2x80x94C4H8Oxe2x80x94(C2H4O)yxe2x80x94(C3H6O)zxe2x80x94C4H8xe2x80x94]xe2x80x83xe2x80x83(VII)
where x is a number between 5 and 15 (limits included), y is a number between 15 and 30 (limits included), and z is a number between 20 and 40 (limits included).
Among these polymers, the ones more particularly used are those in which the siloxane/polyoxyalkylene weight ratio is about 20 and the polyoxyethylene/polyoxypropylene weight ratio is about 65/35.
Polymers can also be chosen in which the repeating unit is of formula (VI) and whose siloxane/polyoxyalkylene weight ratio is about 75 and whose polyoxyethylene/polyoxypropylene weight ratio is about 50/50, polymers whose siloxane/polyoxyalkylene weight ratio is about 35 and whose polyoxyethylene/polyoxypropylene weight ratio is about 100/0, and polymers whose siloxane/polyoxyalkylene weight ratio is about 30 and whose polyoxyethylene/polyoxypropylene weight ratio is about 0/100.
According to a particular embodiment of the invention, the block copolymer is chosen from the following copolymers:
[[(CH3)2SiO]41(CH3)2SiCH2
CH(CH3)CH2xe2x80x94O(C2H4O)18
xe2x80x94(C3H6O)33CH2CH(CH3)CH2]
16.1[[(CH3)2SiO]31
(CH3)2SiCH2CH(CH3)CH2
xe2x80x94O(C2H4O)20xe2x80x94(C3H6O)29
CH2CH(CH3)CH2]13.3
[[(CH3)2SiO]9(CH3)2
SiCH2CH(CH3)CH2
xe2x80x94O(C2H4O)20xe2x80x94(C3H6O)29
CH2CH(CH3)CH2]26.3
[[(CH3)2SiO]16(CH3)2
SiCH2CH(CH3)CH2xe2x80x94O(C2
H4O)18xe2x80x94(C3H6O)20CH2
CH(CH3)CH2]21.5
[[(CH3)2SiO]9(CH3)2
SiCH2CH(CH3)CH2
xe2x80x94O(C2H4O)5xe2x80x94CH2
CH(CH3)CH2]4.8
The polymers containing a non-silicone organic skeleton grafted with monomers containing a polysiloxane, in accordance with the invention, are preferably chosen from those described in U.S. Pat. Nos. 4,963,935, 4,728,571 and 4,972,037 and patent applications EP-A-0,412,704, EP-A-0,412,707, EP-A-0,640,105 and WO 95/00578, the teachings of which are included in their entirety in the present description by way of non-limiting references. They are copolymers obtained by radical polymerization from monomers containing ethylenic unsaturation and from silicone macromonomers having a vinyl end group, or alternatively copolymers obtained by reaction of a polyolefin comprising functionalized groups and of a polysiloxane macromer having an end function which is reactive with the said functionalized groups.
Examples of polymers containing a polysiloxane skeleton grafted with non-silicone organic monomers, which are suitable for carrying out the present invention, as well as the particular method for preparing them, are described in particular in patent applications EP-A-0,582,152, WO 93/23009 and WO 95/03776, the teachings of which are included in their entirety in the present description by way of non-limiting references.
The polyorganosiloxanes preferably used according to the invention are non-volatile polyorgano-polysiloxanes.
The polyorganosiloxanes are used in the compositions of the invention in proportions of between 0.01 and 50% by weight, and preferably between 0.1 and 30% by weight relative to the total weight of the composition.
The compositions according to the invention contain a cosmetically acceptable aqueous medium. They have a pH which can range from 3.5 to 11, preferably between 5.5 and 11 and even more preferably between 5.5 and 8.5.
The cosmetically acceptable medium for the compositions according to the invention consists more particularly of water and optionally of cosmetically acceptable organic solvents.
The organic solvents can represent from 0.5 to 90% of the total weight of the composition. They can be chosen from the group consisting of hydrophilic organic solvents, lipophilic organic solvents, amphiphilic solvents or mixtures thereof.
Among the hydrophilic organic solvents, mention may be made, for example, of linear or branched lower monoalcohols having from 1 to 8 carbon atoms, polyethylene glycols having from 6 to 80 ethylene oxide units, and polyols.
As amphiphilic organic solvents, mention may be made of polypropylene glycol (PPG) derivatives, such as esters of polypropylene glycol and of fatty acid, derivatives of PPG and of fatty alcohol, such as PPG-23 oleyl ether, and PPG-36 oleate.
As lipophilic organic solvents, mention may be made, for example, of fatty esters such as diisopropyl adipate, dioctyl adipate, alkyl benzoates and dioctyl malate.
In order for the cosmetic compositions of the invention to be more pleasant to use (softer when applied, more nourishing and more emollient), it is possible to add a fatty phase to the medium of these compositions.
The fatty phase can represent up to 50% of the total weight of the composition.
This fatty phase can contain an oil or a wax or mixtures thereof, and can also comprise fatty acids, fatty alcohols and fatty acid esters. The oils can be chosen from animal, plant, mineral or synthetic oils and in particular from liquid petroleum jelly, liquid paraffin, isoparaffins, poly-xcex1-olefins, fluoro oils and perfluoro oils. Similarly, the waxes can be chosen from animal, fossil, plant, mineral or synthetic waxes which are known per se.
The compositions of the invention can contain adjuvants that are common in the cosmetics field, such as other standard gelling agents and/or thickeners; emulsifiers; surfactants; moisturizers; emollients; sunscreens; hydrophilic or lipophilic active agents such as ceramides; anti-free-radical agents; sequestering agents; antioxidants; preserving agents; acidifying or basifying agents; fragrances; fillers; dyestuffs; reducing agents. The amounts of these various additives are those used conventionally in the fields considered.
Needless to say, a specialist will take care to select the optional compound(s) to be added to the composition according to the invention such that the advantageous properties intrinsically associated with the composition in accordance with the invention are not, or are not substantially, adversely affected by the addition envisaged.
The compositions according to the invention can be in any form which is suitable for topical application, in particular in the form of lotion-type solutions, in the form of aqueous or aqueous-alcoholic gels, in the form of vesicle dispersions or in the form of simple or complex emulsions (O/W, W/O, O/W/O or W/O/W emulsions) and can be of liquid, semi-liquid or solid consistency, such as milks, creams, gels, cream-gels, pastes and sticks, and can optionally be packaged as an aerosol and can be in the form of mousses or sprays. These compositions are prepared according to the usual methods.
The compositions according to the invention are preferably used as rinse-out or leave-in hair products, in particular to wash, dye, care for, condition, straighten or maintain the hairstyle or to permanently or temporarily reshape the hair.
The compositions can be styling products such as hairsetting lotions, blow-drying lotions, fixing compositions and styling compositions. The lotions can be packaged in various forms, in particular in vaporizers, pump-dispenser bottles or in aerosol containers in order to ensure application of the composition in vaporized form or in the form of a mousse. Such packaging forms are indicated, for example, when it is desired to obtain a spray or a mousse for fixing or treating the hair.
The compositions of the invention can also be shampoos, rinse-out compositions or leave-in compositions, to be applied before or after shampooing, dyeing, bleaching, permanent-waving or straightening the hair.
The compositions of the invention can also be used as hygiene or care products, such as protective, treatment or beauty creams for the face, for the hands or for the body, protective or care body milks, and skincare or skin cleansing lotions, gels or mousses.
The compositions of the invention can also be used as antisun compositions.
The compositions can also consist of solid preparations constituting cleansing soaps or bars.
The compositions of the invention can also be used as oral care products such as toothpastes and mouthwashes.
The compositions can be make-up products such as face creams, foundations, mascaras, eyeliners, lipsticks or nail varnishes.
Another subject of the invention is a cosmetic, non-therapeutic treatment process for the skin, the scalp, the hair, the eyelashes, the eyebrows, the nails or mucous membranes, characterized in that a composition as defined above is applied to the keratinous support, according to the usual technique for using this composition, for example application of creams, gels, sera, lotions or milks to the skin, the scalp or mucous membranes.
The examples which follow illustrate the invention without being limiting in nature.