Cosmetic composition comprising an organosilane, a cationic surfactant and a cationic polymer having charge density greater than or equal to 4 meq/g

Abstract

The present invention relates to a cosmetic composition for the treatment of keratin fibres, particularly human keratin fibres such as hair, comprising, in a cosmetically acceptable medium, one or more organosilanes, one or more cationic polymers having charge density greater than or equal to 4 meq/g and one or more cationic surfactants. The present invention also relates to a cosmetic process for treating keratin fibres using said cosmetic composition. The present invention finally relates to the use of said composition for the cosmetic treatment of keratin fibres.

Claims

1. A cosmetic composition for caring for keratin fibers, comprising, in a cosmetically acceptable medium: (i) one or more organosilanes chosen from 3-aminopropyltriethoxysilane, oligomers thereof, or mixtures thereof; (ii) one or more cationic polymers having a charge density greater than or equal to 4 meq/g chosen from: (1) alkyldiallylamine or dialkyldiallylammonium cyclopolymers; (2) crosslinked polymers of methacryloyloxyalkyl(C.sub.1-C.sub.4) trialkyl(C.sub.1-C.sub.4) ammonium salts; or (3) mixtures thereof, and (iii) one or more cationic surfactants chosen from: (a) quaternary ammonium salts of formula (XII) below: ##STR00015## in which, R.sub.28 to R.sub.31, which can be identical or different, represent a linear or branched aliphatic group including from 1 to 30 carbon atoms or an aromatic group, at least one of the R.sub.28 to R.sub.31 groups denoting a group including from 8 to 30 carbon atoms, and X.sup.− is an anion chosen from the group of halides, phosphates, acetates, lactates, (C.sub.1-C.sub.4)alkylsulfates, (C.sub.1-C.sub.4)alkylsulfonates and (C.sub.1-C.sub.4)alkyl-arylsulfonates, (b) quaternary ammonium salts containing at least one ester function, or (c) mixtures thereof; wherein the pH of said composition ranges from 3 to 7, wherein the amount of the organosilane(s) ranges from 1% to 8% by weight, relative to the total weight of the composition, and the amount of cationic polymer(s) ranges from 0.1% to 15% by weight, relative to the total weight of the composition.

2. The composition according to claim 1, wherein the cationic polymer(s) are chosen from 2-methacryloyloxyethyl trimethyl ammonium chloride, dimethyldiallylammonium chloride or mixtures thereof.

3. The composition according to claim 1, wherein the cationic surfactant(s) are chosen from cetyltrimethylammonium chloride, dipalmitoylethylhydroxyethylammonium methosulfate or mixtures thereof.

4. The composition according to claim 1, wherein the content of cationic surfactant(s) ranges from 0.05% to 10% by weight, relative to the total weight of the composition.

5. The composition according to claim 1, further comprising one or more fatty substances.

6. The composition according to claim 5, wherein the content of the fatty substance(s) ranges from 1% to 30% by weight, relative to the total weight of the composition.

7. A method for the cosmetic treatment of keratin fibers, which consists in applying to the said keratin fibers a composition comprising, in a cosmetically acceptable medium: (i) one or more organosilanes chosen from 3-aminopropyltriethoxysilane, oligomers thereof, or mixtures thereof; (ii) one or more cationic polymers having a charge density greater than or equal to 4 meq/g chosen from (1) alkyldiallylamine or dialkyldiallylammonium cyclopolymers; (2) crosslinked polymers of methacryloyloxyalkyl(C.sub.1-C.sub.4) trialkyl(C.sub.1-C.sub.4) ammonium salts; or (3) mixtures thereof, and (iii) one or more cationic surfactants chosen from: (a) quaternary ammonium salts of formula (XII) below: ##STR00016## in which, R.sub.28 to R.sub.31, which can be identical or different, represent a linear or branched aliphatic group including from 1 to 30 carbon atoms or an aromatic group, at least one of the R.sub.28 to R.sub.31 groups denoting a group including from 8 to 30 carbon atoms, and X.sup.− is an anion chosen from the group of halides, phosphates, acetates, lactates, (C.sub.1-C.sub.4)alkylsulfates, (C.sub.1-C.sub.4)alkylsulfonates and (C.sub.1-C.sub.4)alkyl-arylsulfonates, (b) quaternary ammonium salts containing at least one ester function, or (c) mixtures thereof; wherein the pH of said composition ranges from 3 to 7, wherein the amount of the organosilane(s) ranges from 0.1% to 8% by weight, relative to the total weight of the composition, and and wherein the amount of cationic polymer(s) ranges from 1% to 15% by weight, relative to the total weight of the composition.

Description

EXAMPLES

(1) In the examples that follow, all the amounts are given as percentages by weight relative to the total weight of the composition.

I. Example 1

(2) a. Compositions Tested

(3) The following compositions, A1 (invention) and B1 (comparison), have been prepared from ingredients whose contents are indicated in the table below.

(4) TABLE-US-00001 A1 B1 (invention) (comparison) Cetylstearyl alcohol (50/50: C.sub.16/C.sub.18) 9 9 Mixture of myristyl stearate and myristyl 1 1 palmitate White mineral oil 3 3 Dipalmitoylethylhydroxyethylmethyl- 4.5 4.5 ammonium methosulfate/cetearyl alcohol (1.35 AI + (1.35 AI + (30/70) 3.15 AI) 3.15 AI) Cetyltrimethylammonium chloride 3.2 3.2 (25% aqueous solution)  (0.8 AI) (0.8 AI) 3-Aminopropyltriethoxysilane 5 — Lactic acid 2 2 Chlorhexidine digluconate 0.1 0.1 Preservative, Fragrance qs qs Polydimethyldiallylammonium chloride 1.2 — (40% aqueous solution) (0.48 AI) Water qs 100 qs 100 pH 5 ± 0.2 5 ± 0.2 AI: Active Ingredient

(5) The resulting compositions A1 and B1 were applied to the same hair, by applying each composition to a half-head at 6 g per half head, on damp hair. The experiment was repeated on 14 models.

(6) An expert then evaluated each of the following conditioning properties: detangling, suppleness, smoothness. The detangling was evaluated using a comb, whereas the other properties were scored on feel. For each of the 14 experiments, the expert attributed a score ranging from 0 to 5, where 0 corresponds to a minimum conditioning level and 5 corresponds to a maximum conditioning level.

(7) Then the persistence of each of these properties after 3 washes with shampoo was evaluated according to the same criteria as previously.

(8) b. Results

(9) The results of the conditioning properties are given in the following table (average values for the 14 experiments).

(10) TABLE-US-00002 After After 3 washes application with shampoo Disentangling A1 3.6 3.1 B1 3.6 2.2 Suppleness A1 3.3 3.2 B1 3.3 2.6 Smoothness A1 2.8 2.9 B1 3.2 1.9

(11) For smoothness, although the invention performs slightly less well than the comparison after application (at T0), it is observed that the effect is long-lasting after 3 washes with shampoo for the invention whereas it is not for the comparison.

(12) The results above show that the hair treated with the composition according to the invention (A1) has good conditioning properties, that persist after washing with shampoo, by contrast with the conditioning effects obtained with the comparison composition (B1). Indeed, even after three washes, hair treated with the composition (A1) retain their conditioning properties. By contrast, the properties obtained with composition (B1) degrade.

II. Example 2

(13) a. Compositions Tested

(14) The following compositions, A2 (invention) and B2 (comparison), have been prepared from ingredients whose contents are indicated in the table below.

(15) TABLE-US-00003 A2 B2 (invention) (comparison) Cetyltrimethylammonium chloride 3.2% 3.2% (0.8% AM) (0.8% AM) 3-Aminopropyltriethoxysilane .sup. 5% .sup. 5% Polyquaternium-6 1.2% — (Charge density: 6 meq/g) (0.4% AI)   Polyquaternium-10 — 0.44%  (Charge density: 1.1 meq/g) (0.4% AI)   Water Qs 100% Qs 100% pH 5 ± 0.2 5 ± 0.2
b. Procedure

(16) The resulting compositions A2 and B2 were applied at 1 g on tresses of bleached, damp hair weighing 2.7 g.

(17) Using a comb, an expert then evaluated the persistence of detangling after 3 washes with shampoo, for each of the tresses tested, attributing scores ranging from 0 to 5, where 0 corresponds to minimum detangling (very difficult detangling) and 5 corresponds to a very easy level of detangling.

(18) c. Results

(19) The results of the detangling properties are given in the following table (average value for the 2 tresses).

(20) TABLE-US-00004 After 3 washes with shampoo A2 (invention) 5 B2 (comparison) 1

(21) The results above show that the presence of a cationic polymer having charge density greater than or equal to 4 meq/g is necessary to produce good conditioning properties, which are long-lasting after 3 washes with shampoo. So hair treated with the composition comprising the Polyquaternium-6 (invention) detangles much better than hair treated with the composition comprising Polyquaternium-10 (comparison), after 3 washes with shampoo.

III. Example 3

(22) a. Compositions Tested

(23) The following compositions, A1 (invention) and B3 (comparison), have been prepared from ingredients whose contents are indicated in the table below.

(24) TABLE-US-00005 A1 B3 (invention) (comparison) Cetylstearyl alcohol (50/50: C.sub.16/C.sub.18) 9 9 Mixture of myristyl stearate and myristyl 1 1 palmitate White mineral oil 3 3 Dipalmitoylethylhydroxyethylmethyl- 4.5 4.5 ammonium methosulfate/cetearyl alcohol (1.35 AI + (1.35 AI + (30/70) 3.15 AI) 3.15 AI) Cetyltrimethylammonium chloride 3.2 3.2 (25% aqueous solution)  (0.8 AI) (0.8 AI) 3-Aminopropyltriethoxysilane 5 5 Lactic acid 2 2 Chlorhexidine digluconate 0.1 0.1 Preservative, Fragrance Qs Qs Polydimethyldiallylammonium chloride 1.2 — (40% aqueous solution) (0.48 AI) Water Qs 100 Qs 100 pH 5 ± 0.2 5 ± 0.2 AI: active ingredient

(25) The resulting compositions A1 and B3 have been applied at 6 g per half head on damp hair. The experiment was run on 6 models having sensitized hair.

(26) Directly after compositions A1 and B3 were applied, using a comb an expert evaluated the level of detangling, for all of the 6 comparison experiments, by attributing scores ranging from 0 to 5, where 0 corresponds to minimum detangling (very difficult detangling) and 5 corresponds to a very easy level of detangling.

(27) The persistence of detangling after 3 washes with shampoo was also determined, using the same criteria as previously.

(28) b. Results

(29) The results of the detangling properties are given in the following table (average value for the 6 experiments).

(30) TABLE-US-00006 After After 3 washes application with shampoo A1 (invention) 3.6 3.4 B3 (comparison) 3.8 2.8

(31) The results above show that the composition according to the present invention (A1) can produce good detangling properties.

(32) Moreover, in contrast to the properties produced with composition B3, those obtained with composition A1 are long-lasting when washed with shampoo. So even after three washes with shampoo, the hair treated with the composition comprising a cationic polymer having charge density equal to 4 meq/g (invention) retains its detangling properties. By contrast, these properties fade when hair is treated with a composition that does not comprise a cationic polymer having charge density greater than or equal to 4 meq.

(33) The presence of this specific type of cationic polymer is therefore necessary to secure a long-lasting effect for the cosmetic properties.

IV. Example 4

(34) a. Compositions Tested

(35) The following compositions, A1 (invention) and B4 (comparison), have been prepared from ingredients whose contents are indicated in the table below.

(36) TABLE-US-00007 A1 B4 (invention) (comparison) Cetylstearyl alcohol (50/50: C.sub.16/C.sub.18) 9 9 Mixture of myristyl stearate and myristyl 1 1 palmitate White mineral oil 3 3 Dipalmitoylethylhydroxyethylmethyl- 4.5 4.5 ammonium methosulfate/cetearyl alcohol (1.35 AI + (1.35 AI + (30/70) 3.15 AI) 3.15 AI) Cetyltrimethylammonium chloride 3.2 3.2 (25% aqueous solution)  (0.8 AI) (0.8 AI) 3-Aminopropyltriethoxysilane 5 — Lactic acid 2 2 Chlorhexidine digluconate 0.1 0.1 Preservative, Fragrance Qs Qs Polydimethyldiallylammonium chloride 1.2 1.2 (40% aqueous solution) (0.48 AI) (0.48 AI) Water Qs 100 Qs 100 pH 5 ± 0.2 5 ± 0.2 AI: active ingredient

(37) Compositions A1 and B4 have been applied at 6 g per half head on damp hair. The experiment was run on 6 models having sensitized hair.

(38) Directly after compositions A1 and B4 were applied, using a comb an expert evaluated the level of detangling, for all of the 6 comparison experiments, by attributing scores ranging from 0 to 5, where 0 corresponds to minimum detangling (very difficult detangling) and 5 corresponds to a very easy level of detangling.

(39) The persistence of detangling after 3 washes with shampoo was also determined, using the same criteria as previously.

(40) b. Results

(41) The results of the detangling properties are given in the following table (average value for the 6 experiments).

(42) TABLE-US-00008 After After 3 washes application with shampoo A1 (invention) 3.2 3.3 B4 (comparison) 3.5 2.6

(43) The results above show that the composition according to the present invention (A1) can produce detangling properties that are long-lasting for at least 3 washes with shampoo, in contrast with the properties obtained with composition B4. Indeed, after three washes, hair treated with the composition comprising 3-aminopropyltriethoxysilane (invention) retains its detangling properties. By contrast, these properties fade when hair is treated with a composition not comprising an organosilane having formula (I).

(44) The presence of a silane having formula (I) is therefore necessary to secure a long-lasting effect for the cosmetic properties.