FLUID COSMETIC COMPOSITIONS WITH UNUSUAL RHEOLOGIC CHARACTERISTICS, POLYMERS ADAPTED TO PROVIDE THE ABOVE SAID CHARACTERISTICS AND THEIR SYNTHESIS

Abstract

A fluid cosmetic composition with unusual rheologic characteristics has a formulation comprising 0.1 to 50% by weight of at least one fluid branched polymer obtained by simultaneous reaction from components A. B and C, where A is a linear polymer with a molecular weight Mw between 5000 and 50000 Da, provided with reactive functional groups X in a chain at a concentration between 0.1 and 50 mmol/g of polymer. B is a linear polymer with a molecular weight Mw between 10000 and 100000 Da, having terminal reactive functional groups of type Y capable of reacting with the functional group X in an addition or condensation reaction, and C is a molecule or linear oligomer (or a mixture thereof) with a molecular weight between 50 and 1000 Da, having a reactive functional group Y per molecule, capable of reacting with the functional group X in an addition or condensation reaction. The molar ratio of the functional groups of B and A is between 0.01 and 0.5 and the molar ratio of the functional groups of C and A is between 0.5 and 1.2. The reactive group X of A is capable of reacting with the reactive sites Y of B and C.

Claims

1-21. (canceled)

22. A fluid cosmetic composition with a formulation comprising between 0.1 and 50% by weight of at least one fluid branched polymer obtained by reaction of the following components A, B and C: A) linear polymer with a molecular weight Mw between 5000 Da and 50000 Da (expressed in equivalents of polystyrene), provided with reactive functional groups X in a chain at a concentration between 0.1 and 50 mmol/g of polymer; B) linear polymer with a molecular weight Mw between 10000 Da and 100000 Da (expressed in equivalents of polystyrene), having terminal reactive functional groups of type Y capable of reacting with the functional group X in an addition or condensation reaction; C) molecule o linear oligomer with a molecular weight between 50 Da and 1000 Da (or a mixture thereof) having a reactive functional group Y per molecule, capable of reacting with the functional group X in an addition or condensation reaction; wherein said fluid branched polymer is a branched alkyl dimethicone in which: A) is selected from polymethylhydrosiloxanes with the following structural formula: ##STR00003## with x>2; y?0; R?H, CH.sub.3 B) is selected from linear polydimethylsiloxanes with terminal vinyl groups according to the following structural formula: ##STR00004## wherein n identifies a polymer with a molecular weight Mw between 10000 Da and 100000 Da; C) is selected from alpha olefins of general formula CH.sub.2?CHR with R being an alkyl group containing from 6 to 50 carbon atoms; wherein: the molar ratio of the functional groups of B and A is between 0.01 and 0.5, the molar ratio of the functional groups of C and A is between 0.5 and 1.2, and the reactive group X of A is capable of reacting with the reactive sites Y of B and C; and wherein the reaction is a simultaneous hydrosilylation reaction in the presence of a hydrosilylation catalyst.

23. The fluid cosmetic composition of claim 22, wherein the polymers A and B are selected from the families of polymers used in cosmetics, in particular silicones, polyesters, and polyurethanes.

24. The fluid cosmetic composition of claim 22, wherein the reactive functional groups X and Y are selected from complementary reactive groups, in particular SiH, carboxyl, vinyl, hydroxyl, alkoxy (OCH.sub.3, OCH.sub.2CH.sub.3, OCH(CH.sub.3).sub.2) groups, amines, isocyanates.

25. A cosmetic product with the fluid cosmetic composition of claim 22.

26. The cosmetic product of claim 25, which is a lipstick.

27. The cosmetic product of claim 25, which is a foundation.

28. The cosmetic product of claim 25, which is a lip concealer.

29. The cosmetic product of claim 25, which is a primer.

30. A fluid branched polymer for a fluid cosmetic composition, wherein the branched polymer is the result of a reaction between the following components A, B and C: A) linear polymer with a molecular weight Mw between 5000 Da and 50000 Da (expressed in equivalents of polystyrene), provided with reactive functional groups X in a chain at a concentration between 0.1 and 50 mmol/g of polymer; B) linear polymer with a molecular weight Mw between 10000 Da and 100000 Da (expressed in equivalents of polystyrene), having terminal reactive functional groups of type Y capable of reacting with the functional group X in an addition or condensation reaction; C) molecule o linear oligomer with a molecular weight between 50 Da and 1000 Da (or a mixture thereof) having a reactive functional group Y per molecule, capable of reacting with the functional group X in an addition or condensation reaction; wherein said fluid branched polymer is a branched alkyl dimethicone in which: A) is selected from polymethylhydrosiloxanes with the following structural formula: ##STR00005## with x>2; y?0; R?H, CH.sub.3 B) is selected from linear polydimethylsiloxanes with terminal vinyl groups according to the following structural formula: ##STR00006## wherein n identifies a polymer with a molecular weight Mw between 10000 Da and 100000 Da; C) is selected from alpha olefins of general formula CH.sub.2?CHR, with R being an alkyl group containing from 6 to 50 carbon atoms; wherein the molar ratio of the functional groups of B and A is between 0.01 and 0.5, the molar ratio of the functional groups of C and A is between 0.5 and 1.2, and the reactive group X of A is capable of reacting with the reactive sites Y of B and C; and wherein the reaction is a simultaneous hydrosilylation reaction in the presence of a hydrosilylation catalyst.

31. The fluid branched polymer of claim 30, wherein the polymers A and B are selected from the families of polymers used in cosmetics, in particular silicones, polyesters, and polyurethanes.

32. The fluid branched polymer of claim 30, wherein the reactive functional groups X e Y are selected from complementary reactive groups, in particular SiH, carboxyl, vinyl, hydroxyl, alkoxy (OCH.sub.3, OCH.sub.2CH.sub.3, OCH(CH.sub.3).sub.2) groups, amines, isocyanates.

Description

EXAMPLES

Example 1: Lip Fluid

[0052]

TABLE-US-00007 %(w/w) PHASE A Sample II 8.0 Skin conditioners 21.0 Antifoam agents 18.0 PHASE B Soothing agent 4.0 Viscosity enhancers 12.0 PHASE C Solvent 18.0 Dispersants 1.3 Skin conditioners 3.2 Dyes 14.5

Example 2: Foundation

[0053]

TABLE-US-00008 %(w/w) PHASE A Skin conditioners 19.0 Emulsifiers 9.0 Viscosity enhancers 10.0 PHASE B Sample I 4.0 Sample III 2.0 PHASE C Dyes 18.3 PHASE D Preservatives 1.0 PHASE E Solvents 33.0 Viscosity enhancers 2.0 Chelating agents 0.2 PHASE F Antioxidants 0.5 Fragrances 1.0

Example 3: Concealer

[0054]

TABLE-US-00009 %(w/w) PHASE A Skin conditioners 14.0 Emulsifiers 3.0 Surfactants-emulsifiers 2.0 PHASE B Volumizers 0.8 PHASE C Sample I 2.5 PHASE D Solvents 12.5 Dispersants 1.2 Emulsifiers 0.5 Dyes 28.0 PHASE E Dyes 1.5 Surface modifiers 1.0 PHASE F Preservatives 1.0 PHASE G Solvents 29.3 Viscosity enhancers 2.0 Chelating agents 0.2 PHASE H Antioxidants 0.5

Example 4: Foundation

[0055]

TABLE-US-00010 %(w/w) PHASE A Skin conditioners 2.0 Anti-caking agent 0.5 PHASE B Skin conditioners 6.0 Sample II 2.0 Emulsifiers 3.5 Antioxidants 0.5 Antifoam agents 1.0 PHASE C Solvents 4.0 Dispersants 1.0 Emulsifiers 0.5 Skin conditioners 2.5 Soothing agent 2.3 Volumizers 1.0 Dyes 25.0 PHASE D Solvents 28.0 Viscosity enhancers 4.0 Chelating agents 0.5 PHASE E Film-forming agent 7.0 PHASE F Preservatives 1.0 PHASE G Anti-caking agent 2.0 Binder 2.5 Dyes 2.5 PHASE H Fragrance 0.7

Example 5: Primer

[0056]

TABLE-US-00011 %(w/w) PHASE A Sample IV 35.0 PHASE B Skin conditioners 25.0 Soothing agent Sample II 40.0

Example 6: Non-Silicone Lip Fluid

[0057]

TABLE-US-00012 %(w/w) PHASE A Sample V 9.0 Skin conditioners 20.0 Antifoam agents 18.0 PHASE B Soothing agent 6.0 Viscosity enhancers 10.0 PHASE C Solvent 18.0 Dispersants 1.3 Skin conditioners 3.2 Dyes 14.5

Example 7: Non-Silicone Foundation

[0058]

TABLE-US-00013 %(w/w) PHASE A Skin conditioners 17.0 Emulsifiers 10.0 Viscosity enhancers 9.0 PHASE B Sample VI 6.0 PHASE C Dyes 18.3 PHASE D Preservatives 1.0 PHASE E Solvents 35.0 Viscosity enhancers 2.0 Chelating agents 0.2 PHASE F Antioxidants 0.5 Fragrances 1.0

TABLE-US-00014 Summary table Sample/ Raw material P.sub.N, MAX/ Shear rate for Example contained Pa F.sub.N, MAX/s.sup.?1 T/? c. SAMPLE I 7385 approx. 100 20 SAMPLE II 6621 approx. 150 20 SAMPLE III 3183 approx. 150 30 SAMPLE IV 7130 approx. 100 60 SAMPLE V 6950 approx. 100 30 SAMPLE VI 6503 approx. 100 20 EXAMPLE 1 SAMPLE II 229 approx. 3 20 EXAMPLE 2 SAMPLE I 331 approx. 800 20 SAMPLE III EXAMPLE 3 SAMPLE I 92 approx. 300 20 EXAMPLE 4 SAMPLE II 61 approx. 300 20 EXAMPLE 5 SAMPLE IV 611 approx. 800 60 EXAMPLE 6 SAMPLE V 250 approx. 3 20 EXAMPLE 7 SAMPLE VI 3068 approx. 800 20