COMPOSITION COMPRISING AT LEAST ONE SILICONE ACRYLIC COPOLYMER AND AT LEAST ONE CATIONIC ACRYLIC COPOLYMER

Abstract

The present invention relates to a composition comprising at least one silicone acrylic copolymer and at least one particular block copolymer. The present invention also relates to a process for treating keratin fibers using a composition comprising at least one silicone acrylic copolymer and at least one particular block copolymer.

Claims

1.-25. (canceled)

26. A composition comprising at least one silicone acrylic copolymer and at least one cationic acrylic copolymer, wherein the at least one cationic acrylic copolymer comprises: a) at least one monomer derived from acrylic esters, methacrylic esters, acrylic amides, or methacrylic amides, and wherein the at least one monomer comprises at least one cationic group, and b) at least one alkyl acrylate or methacrylate monomer.

27. The composition of claim 26, wherein the silicone acrylic copolymer comprises: a) at least one polyalkylsiloxane unit, and b) at least one alkyl acrylate or methacrylate unit, wherein the alkyl acrylate or methacrylate unit comprises from 1 to 30 carbon atoms.

28. The composition of claim 26, wherein the silicone acrylic copolymer comprises: a) at least one polydimethylsiloxane (PDMS) unit, and b) at least one alkyl acrylate or methacrylate unit, wherein the alkyl acrylate or methacrylate unit comprises from 1 to 30 carbon atoms.

29. The composition of claim 26, wherein the silicone acrylic copolymer comprises: a) at least one polydimethylsiloxane (PDMS) unit comprising at least one polymerizable CH.sub.2═CH—COOA radical group, where A represents an alkyl group comprising from 1 to 3 carbon atoms; and b) a C.sub.1-C.sub.22 alkyl acrylate or methacrylate unit.

30. The composition of claim 26, wherein the composition comprises the at least one silicone acrylic copolymer in an amount ranging from about 0.01% to about 25% by weight, relative to the total weight of the composition.

31. The composition of claim 26, wherein the acrylic cationic copolymer further comprises c) at least a third unit obtained from a polymerizable ethylenic monomer having the following formula: ##STR00007## wherein R and R′, which may be identical or different, represent a hydrogen atom or a C1-C10 alkyl radical; and x is a number from 1 to 10.

32. The composition of claim 26, wherein the at least one acrylic cationic copolymer comprises at least one unit chosen from: a) a monomer derived from acrylic esters, methacrylic esters, acrylic amides, or methacrylic amides, and comprising at least one cationic group chosen from the following formulas: ##STR00008## wherein: R.sub.3, which may be identical or different, is a hydrogen atom or a CH.sub.3 group; A, which may be identical or different, is a linear or branched divalent alkyl group of 1 to 6 carbon atoms; R.sub.4, R.sub.5 and R.sub.6, which may be identical or different, are chosen from an alkyl group comprising from 1 to 18 carbon atoms or a benzyl group; R.sub.1 and R.sub.2, which may be identical or different, are chosen from a hydrogen atom or an alkyl group comprising from 1 to 6 carbon atoms; X.sup.− is an anion derived from a mineral acid, an organic acid, or a halide, and/or b) a C.sub.1-C.sub.30 acrylate or methacrylate monomer.

33. The composition of claim 26, wherein the acrylic cationic copolymer comprises at least the units derived from the following monomers: a) methacryloyloxyethyltrimethylammonium salt, b) butyl methacrylate, and c) ethoxyethyl methacrylate.

34. The composition of claim 26, wherein the composition comprises the cationic acrylic copolymer(s) in an amount ranging from about 0.01% to about 25% by weight, relative to the total weight of the composition.

35. The composition of claim 26, wherein the composition further comprises one or more fatty substances.

36. The composition of claim 26, wherein the composition comprises one or more fatty substances chosen from saturated hydrocarbons comprising between 8 and 16 carbons.

37. The composition of claim 35, wherein the composition comprises one or more fatty substances in an amount ranging from about 0.1% to about 95% by weight, relative to the total weight of the composition.

38. The composition of claim 26, wherein the composition further comprises one or more film-forming polymers other than the silicone acrylic copolymer and the cationic acrylic polymer, chosen from cationic, anionic, amphoteric, or nonionic film-forming polymers, or mixtures thereof.

39. The composition of claim 38, wherein the composition comprises the film-forming polymer(s) in an amount ranging from about 0.01% to about 15% by weight, relative to the total weight of the composition.

40. The composition of claim 26, wherein the composition further comprises one or more thickeners chosen from mineral or organic thickeners, or mixtures thereof.

41. The composition of claim 26, wherein the composition further comprises one or more organic solvents other than fatty substances.

42. The composition of claim 26, wherein the composition is a noncoloring composition.

43. A process for treating keratin fibers, comprising applying the composition of claim 26 to the keratin fibers.

44. A process for treating keratin fibers, comprising: i. applying to the keratin fibers the composition of claim 26, and ii. applying heat to the keratin fibers using a heating tool, the application of heat taking place before, during or after the application of the composition, preferably during or after.

45. The process of claim 44, wherein applying heat to the keratin fibers is performed using a heating tool at a temperature of between about 30° C. and about 230° C., and wherein applying heat takes place after applying the composition to the keratin fibers.

Description

EXAMPLES

Example 1

[0279] 1. Preparation of the Compositions

[0280] Compositions A to C were prepared using the ingredients whose contents are indicated in the table below as weight percentages of starting material relative to the total weight of the composition.

TABLE-US-00001 A B C Silicone acrylic copolymer 8.75 8.75 — (containing 40% by weight active (3.5 am) (3.5 am) material in isododecane) (1) Cationic acrylic copolymer 16.7 — 16.7 (containing 30% by weight active (5.0 am) (5.0 am) material in ethanol) (2) Ethanol qs 100% qs 100% qs 100% (1) Granacrysil BMAS, sold by the company Grant Industries (2) Polyquaternium-99, sold by the company GOO Chemical

[0281] 2. Application Protocols

The protocols for application to locks of hair were as follows:

TABLE-US-00002 Protocol according to the invention Shampooing Application of the composition onto wet natural straight or curly hair Predrying with a hairdryer or blow-drying Straightening iron (3 passes at the roots at 210° C.)

[0282] 3. Evaluation and Results

[0283] The evaluation protocol after drying relates to the evaluation of the impact on the shape, the cosmetic criteria (feel) and the appearance criteria (macroscopic effects, SEM visualization).

[0284] The shampoo-persistence evaluation protocol is as follows. Performance of several cycles:

[0285] Wetting of the hair

[0286] Shampooing

[0287] Rinsing

[0288] Drying with a hairdryer

[0289] Evaluation of the impact on the shape, the cosmetic criteria (feel) and the appearance criteria (macroscopic effects, SEM visualization).

[0290] 3.1 Appearance of Locks by SEM

[0291] Observations by scanning electron microscope (SEM) demonstrate the surface state of treated hair, on the day of application and after shampoo washing, and reveal the quality of the coating formed by the polymers and its persistence.

[0292] The evaluated locks of hair lead to the following observations (application of 0.4 g of composition/g of hair).

[0293] With composition A according to the invention and by following the protocol according to the invention, homogeneous, uniform and covering coating of the fiber was observed. This coating is persistent for up to three shampoo washes. In particular, better persistence is observed with composition A, compared with composition B or C. This coating is thicker and more uniform when the silicone acrylic polymer is combined with a cationic acrylic polymer such as PQ 99 (composition A), compared with the coating obtained when the composition comprises the silicone acrylic polymer alone (composition B). Better cosmeticity is also observed with composition A according to the invention relative to composition B. By following the process according to the invention, composition A (mixture of the two particular copolymers) has the advantage of limiting the tack and powdering during application.

Example 2

[0294] 1. Preparation of the Compositions

[0295] Compositions A and B were prepared using the ingredients whose contents are indicated in the table below as weight percentages of starting material relative to the total weight of the composition

TABLE-US-00003 A B (invention) (comparative) Isobutyl methacrylate/bis-hydroxypropyl 3.5 am 3.5 am dimethicone acrylate copolymer at 40% by weight active material in isododecane (Granacrysil BMAS) Polyquaternium-99 5 am — Octylacrylamide/Acrylates/ — 5 am Butylaminoethyl Methacrylate Copolymer (AMPHOMER from NOURYON) Ethanol qs 100% qs 100%

[0296] 2. Application Protocol

[0297] Shampooing

[0298] Application of compositions A and B to a half head on a wet malleable head, in a proportion of 4 g of composition per half head.

[0299] Predrying with a hair dryer or blow drying

[0300] Straightening iron (3 passes at the roots at 210° C.)

[0301] 3. Evaluation and Results

1//Powdering Criterion

[0302] The powdering criterion was evaluated visually by comparative photography during the drying.
Composition A according to the invention shows no powdering, contrary to composition B which exhibits clumps of white residues.

2//Cosmetic Criterion (Disentangling of Wet Hair and Feel of Dry Hair)

[0303] The performance levels in terms of disentangling and feel were evaluated by 5 experts, during a blind test.
Each of the 5 experts gave their opinion as to the side of the head that exhibited the easiest disentangling (on wet hair) and the most natural feel (on dry hair).
The disentangling criterion was evaluated using the combing test. A fine comb runs through the hair of the malleable head from top to bottom. As the comb passes through, the earlier it catches, the more difficult the disentangling will be.
The evaluation of the feel is tactile: The expert takes hold of a lock between the thumb and index finger and slides their fingers from the upper part to the ends; the expert evaluates whether the hair is soft, whether there is coarsess, whether it catches the fingers, and whether it has an even feel.
The results obtained are shown below:

Disentangling of Wet Hair

[0304]

TABLE-US-00004 A B invention Comparative Expert 1 ++ − Expert 2 ++ − Expert 3 ++ − Expert 4 ++ − Expert 5 ++ −
With composition A according to the invention, the comb passes through easily, compared with composition B, where it catches.

Feel of Dry Hair

[0305]

TABLE-US-00005 A B invention Comparative Expert 1 ++ − Expert 2 ++ − Expert 3 ++ − Expert 4 ++ − Expert 5 ++ −
With composition A according to the invention, the feel is natural and subtle, compared with composition B, where it is coarse, rigid and cardboard like.
All the experts judged that composition A according to the invention made it possible to improve the disentangling on wet hair and the feel compared with composition B.