SOLID COMPOSITION WITH A VINYL POLYMER BEARING A CARBOSILOXANE DENDRIMER UNIT AND VOLATILE HYDROCARBON-BASED OILS, AND TREATMENT PROCESS

Abstract

The present invention relates to an anhydrous solid cosmetic composition comprising: a) at least one vinyl polymer comprising at least one carbosiloxane dendrimer-based unit; b) at least two hydrocarbon-based volatile oils, c) at least one saturated or unsaturated, preferably linear, solid fatty alcohol whose melting point is greater than or equal to 40 C., comprising from 16 to 60 carbon atoms. The invention also relates to a process for making up and/or caring for the lips, in which the abovementioned composition is applied to the lips.

Claims

1. An anhydrous solid cosmetic composition, comprising: a) at least one vinyl polymer comprising at least one carbosiloxane dendrimer-based unit; b) at least two hydrocarbon-based volatile oils, c) at least one saturated or unsaturated, solid fatty alcohol whose melting point is greater than or equal to 40 C., comprising from 16 to 60 carbon atoms.

2. The composition of claim 1, wherein the vinyl polymer comprising at least one carbosiloxane dendrimer-based unit has a molecular side chain containing a carbosiloxane dendrimer structure, and is the product of polymerization of: (A) from 0 to 99.9 parts by weight of a vinyl monomer; and (B) from 100 to 0.1 parts by weight of a carbosiloxane dendrimer of formula (I) below: ##STR00032## in which: R.sup.1 represents an aryl group containing from 5 to 10 carbon atoms or an alkyl group containing from 1 to 10 carbon atoms; X.sup.i represents a silylalkyl group which, when i=1, is represented by formula (II): ##STR00033## in which: R.sup.1 is as defined above in formula (I), R.sup.2 represents an alkylene radical containing from 2 to 10 carbon atoms, R.sup.3 represents an alkyl group containing from 1 to 10 carbon atoms, X.sup.i+i is a hydrogen atom, an alkyl group containing from 1 to 10 carbon atoms, an aryl group containing from 5 to 10 carbon atoms, or a silylalkyl group defined above of formula (II) with i=i+1, i is an integer from 1 to 10 which represents the generation of said silylalkyl group, and a.sup.i is an integer from 0 to 3; Y represents a radical-polymerizable organic group which is: an organic group containing a methacrylic group or an acrylic group, said organic group being represented by the formulae: ##STR00034## in which: R.sup.4 represents a hydrogen atom or an alkyl group containing from 1 to 10 carbon atoms; and R.sup.5 represents an alkylene group containing from 1 to 10 carbon atoms; or an organic group containing a styryl group of formula: ##STR00035## in which: R.sup.6 represents a hydrogen atom or an alkyl group containing from 1 to 10 carbon atoms; R.sup.7 represents an alkyl group containing from 1 to 10 carbon atoms; R.sup.8 represents an alkylene group containing from 1 to 10 carbon atoms; b is an integer from 0 to 4; and c is 0 or 1, such that, if c is 0, (R.sup.8).sub.c represents a bond.

3. The composition of claim 2, wherein the carbosiloxane dendrimer is represented by the following formula: ##STR00036## in which: Y, R.sup.1, R.sup.2 and R.sup.3 are as defined in claim 2; a.sup.1, a.sup.2 and a.sup.3 correspond to the definition of a.sup.i according to claim 2; and R.sup.12 is H, an aryl group containing from 5 to 10 carbon atoms or an alkyl group containing from 1 to 10 carbon atoms.

4. The composition of claim 2, wherein the carbosiloxane dendrimer is represented by one of the following formulae: ##STR00037##

5. The composition of claim 1, wherein a content of vinyl polymer(s) is from 0.5% to 20% relative to the weight of the composition.

6. The composition of claim 1, wherein the hydrocarbon-based volatile oils are apolar, comprise from 8 to 16 carbon atoms and are linear or branched alkanes.

7. The composition of claim 6, wherein a content of volatile oil(s) represents from 0.5% to 40% by weight relative to the total weight of the said composition.

8. The composition of claim 1, comprising at least one saturated or unsaturated, linear or branched solid fatty alcohol, whose melting point is greater than or equal to 40 C., comprising from 18 to 60 carbon atoms.

9. The composition of claim 8, wherein a content of solid fatty alcohol(s) whose melting point is greater than or equal to 40 C. is from 5% to 20% by weight, relative to the total weight of the composition.

10. The composition of claim 1, comprising at least one alcohol or alcohol-derived additive selected from the group consisting of: a solid fatty alcohol with a melting point between 25 C. and less than 40 C., a linear or branched, saturated or unsaturated, monooxyalkylenated or polyoxyalkylenated C.sub.2-C.sub.3 fatty alcohol containing at least 14 carbon atoms, which is solid at 25 C., a liposoluble polyether resulting from polyetherification between one or more C.sub.2-C.sub.100 diols, and mixtures thereof.

11. The composition of claim 10, wherein a content of alcohol or alcohol-derived additive(s) is between 1% and 10% by weight relative to the total weight of the composition.

12. The composition of claim 1, further comprising at least one wax, other than the solid fatty alcohols whose melting point is greater than or equal to 40 C., and other than the alcohol or alcohol-derived additives.

13. The composition of claim 12, the composition comprises at least one of: an apolar wax in a proportion between 0.1% and 5% by weight relative to the composition; and a polar wax in a proportion between 0.1% and 5% by weight relative to the composition.

14. The composition of claim 1, comprising at least one phenyl silicone non-volatile oil not comprising any dimethicone fragments.

15. The composition of claim 1, further comprising one or more additional non-volatile oils selected from the group consisting of a polar or apolar hydrocarbon-based non-volatile oil, a non-phenyl silicone non-volatile oil and mixtures thereof.

16. The composition of claim 15, wherein a content of additional non-volatile oil(s) is between 2% and 20% by weight relative to the weight of the composition.

17. The composition of claim 1, further comprising at least one dyestuff which is a water-soluble or water-insoluble, liposoluble or non-liposoluble, organic or mineral dyestuff, an optical material, and mixtures thereof.

18. A process for making up and/or caring for the lips, the process comprising applying the composition of claim 1 to the lips.

Description

EXAMPLES

[0538] The solid lipstick composition was prepared, the ingredients and proportions of which are collated in the table below (the percentages are expressed as weight percentages of raw material):

TABLE-US-00001 Invention comparative Phenyl trimethicone (KF 56 A from Shin-Etsu) 44.98 44.98 C.sub.12-C.sub.15 Alkyl benzoate 7.40 7.40 Polyphenyltrimethylsiloxydimethylsiloxane (Belsil PDM 7.54 7.54 1000 from Wacker) Butyl acrylate copolymer containing dendritic silicone side 21 21 chains: Tris((trimethylsiloxy)siloxyethyldimethylsiloxy)silylpropyl methacrylate in isododecane (40/60) sold under the reference Dow Corning FA 4002 ID by Dow Corning Linear long chain (C.sub.30-C.sub.50) fatty alcohol (Performacol 550 8.8 Alcohol from New Phase Technologies) C30-45 alkyldimethylsilyl polypropylsilsesquioxane 8.8 (DOW CORNING SW-8005 C30 RESIN WAX de Dow Corning) Candelilla wax 0.2 0.2 Isohexadecane 2.00 2.00 Pigments 8.00 8.00 Fragrance 0.08 0.08

[0539] The pigments are ground in part of the oily phase.

[0540] The remaining oily phase, the waxes, the isohexadecane and the acrylate polymer from Dow Corning are then placed in a heating pan with moderate stirring at 100 C.

[0541] Stirring is continued until the mixture is homogeneous.

[0542] The composition is then poured into moulds and left to cool.

[0543] A stick of suitable hardness is obtained in the case of the composition according to the invention whereas in the case of the comparative experiment, the composition is very fluid when poured into moulds and yields a very soft stick.

[0544] The wand of lipstick obtained according to the invention is glidant on application, depositing a fine, comfortable, non-tacky film with good persistence.