COMPOSITION COMPRISING AT LEAST ONE SILICONE ACRYLIC COPOLYMER AND AT LEAST ONE HYDROCARBON-BASED BLOCK COPOLYMER

Abstract

The present invention relates to a composition comprising at least one silicone acrylic copolymer and at least one hydrocarbon-based 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 hydrocarbon-based block copolymer.

Claims

1.-25. (canceled)

26. A composition comprising at least one silicone acrylic copolymer and at least one hydrocarbon-based block copolymer, wherein the silicone acrylic copolymer comprises: a) a polyalkylsiloxane unit, and b) an alkyl acrylate or methacrylate unit, wherein the alkyl acrylate or methacrylate unit comprises from 1 to 30 carbon atoms.

27. The composition of claim 26, wherein the silicone acrylic copolymer comprises: a) a polydimethylsiloxane (PDMS) unit, and b) an alkyl acrylate or methacrylate unit comprising 1 to 30 carbon atoms.

28. The composition of claim 26, wherein the silicone acrylic copolymer comprises: a) a polydimethylsiloxane (PDMS) unit including at least one polymerizable ##STR00007## 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.

29. 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 10% by weight, relative to the total weight of the composition.

30. The composition of claim 26, wherein the hydrocarbon-based block copolymer is a diblock or triblock copolymer.

31. The composition of claim 26, wherein the hydrocarbon-based block copolymer is a block copolymer of styrene and of olefin.

32. The composition of claim 26, wherein the hydrocarbon-based block copolymer comprises at least one styrene block and at least one block comprising units chosen from butadiene, ethylene, propylene, butylene, isoprene, or mixtures thereof.

33. The composition of claim 26, wherein the composition comprises the at least one hydrocarbon-based block copolymer in an amount ranging from about 0.01% to about 10% by weight, relative to the total weight of the composition.

34. The composition of claim 26, wherein the total amount of the at least one silicone acrylic copolymer and the at least one hydrocarbon-based block copolymer ranges from about 0.02% to about 20% by weight, relative to the total weight of the composition.

35. The composition of claim 26, wherein the weight ratio between the total amount of the at least one silicone acrylic copolymer and the total amount of the at least one hydrocarbon-based block copolymer ranges from about 0.1 to about 10.

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

37. The composition of claim 26, wherein the composition further comprises one or more fatty substances chosen from saturated hydrocarbons including a carbon number of between 8 and 16 or mixtures thereof.

38. The composition of claim 26, wherein the composition further comprises the 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.

39. The composition of claim 26, wherein the composition further comprises one or more cationic and/or anionic acrylic film-forming polymers other than the at least one silicone acrylic copolymer and the at least one hydrocarbon-based block copolymer.

40. The composition of claim 39, wherein the composition comprises the one or more acrylic 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.

41. The composition of claim 26, wherein the composition further comprises one or more thickeners other than the at least one hydrocarbon-based block copolymer, wherein the one or more thickeners are chosen from mineral thickeners, organic thickeners, or mixtures thereof.

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

43. A process for treating keratin fibers, comprising a step of applying the composition of claim 26 to the keratin fibers, wherein the composition is a noncoloring composition.

44. A process for treating keratin fibers, comprising the following steps: i. applying to the keratin fibers the composition of claim 26, and ii. applying heat to the keratin fibers using a heating tool, wherein the heat is applied before, during or after the application of the composition.

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

Description

EXAMPLES

Example 1

[0270] 1. Preparation of the Compositions

[0271] Compositions A and B according to the invention 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 Silicone acrylic copolymer 8.75 8.75 (containing 40% by weight active (3.5 am) (3.5 am) material in isododecane) (1) Styrene-ethylene/propylene diblock 5 2 copolymer (2) Isododecane qs 100% qs 100% (1) Granacrysil BMAS, sold by the company Grant Industries (2) Kraton, G1701 EU SQR 1111 sold by the company Kraton Polymers

[0272] 2. Application Protocols

[0273] The protocols for application (to locks of hair, malleable heads or models) 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.)

[0274] 3. Evaluation and Results

[0275] 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).

[0276] The shampoo-persistence evaluation protocol is as follows. Performance of several cycles:

[0277] Wetting of the hair

[0278] Shampooing

[0279] Rinsing

[0280] Drying with a hairdryer

[0281] Evaluation of the impact on the shape, the cosmetic criteria (feel) and the appearance criteria (macroscopic effects, SEM visualization).

[0282] 3.1 Appearance of Locks by SEM

[0283] 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 polymer and its persistence.

[0284] The evaluated locks of hair lead to the following observations (application of 0.4 g of composition/g of hair).

[0285] 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.

[0286] 3.2 Cosmetic Aspects

[0287] 3.2.1. Volume—Evaluation on Malleable Heads

[0288] Malleable heads are provided for this test. Each of the compositions A and B was applied to these malleable heads. The compositions are applied per half-head, i.e. on the right or left side of the head of hair separated by a line in the middle, at a rate of 4 g per half-head. The effects of composition A are compared with the other half-head on which, firstly, only water is applied in the same amounts and, secondly, composition B is applied, at a rate of 4 g per half-head. By following the protocol according to the invention (shampooing, applying the formulation to wet hair and to the roots, predrying with a hairdryer and treating the roots three times with a straightening iron at 210° C.), a gain in volume is observed, with persistence for up to three shampoo washes for the half-heads treated with each of the compositions A and B. However, better persistence of the volumizing effect is observed with composition A compared with composition B.

[0289] 3.2.2. Volume—Evaluation by Consumers and Professionals

[0290] An evaluation of composition A was also performed in terms of gain in volume and of volume persistence after several shampoo washes after applying this composition by consumers and professionals. The test was performed by six hairstylists and 24 consumers with fine hair. By following the protocol according to the invention (shampooing, applying formulation A to wet hair and to the roots, predrying using a hairdryer and treating the roots three times with a straightening iron at 210° C.), a gain in volume is observed, with an immediate effect and with persistence for up to three shampoo washes.

Example 2

[0291] 1. Preparation of the Compositions

[0292] Compositions A and B according to the invention 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 (invention) B Isobutyl methacrylate/bis-hydroxypropyl 8.75 8.75 dimethicone acrylate copolymer at 40% by (3.5 am) weight active material in isododecane Granacrysil BMAS Styrene/ethylene-propylene diblock 5 — copolymer, (Kraton G1701 EU SQR 1111) Isododecane Qs 100% Qs 100%

[0293] 2. Application Protocol

[0294] Shampooing

[0295] Application of compositions A and B to a half head on a wet malleable head, in a proportion of 4.3 g of composition per half head. The compositions are applied per half-head, i.e. on the right or left side of the head of hair separated by a line in the middle

[0296] Pre-drying with the head facing downwards using a hairdryer

[0297] Straightening iron (3 passes at the roots at 210° C.)

[0298] 3. Volume—Evaluation on Malleable Heads

[0299] The performance level with respect to “persistence of provision of volume” will be evaluated visually by means of comparative photographs.

Evaluation Protocol

[0300] In order to evaluate the durability of provision of volume, the malleable head was washed with the shampoo, rinsed, dried with the head facing downwards using a hair dryer, then photographed.

[0301] The volume V is represented by the maximum width L between the median and the exterior outline of the head of hair and also by the maximum height (H) between the top of the head and the exterior outline of the head of the hair.

[0302] The values obtained are given below, in cm:

TABLE-US-00004 L H A (invention) 14 1.6 B (comparative) 12.6 1

[0303] Composition A according to the invention results in roots that are more lifted, in a head of hair with greater volume (the exterior outline of the head of hair is further from the outline of the head with composition A compared to composition B)

[0304] Composition A according to the invention made it possible to improve the persistence of the provision of volume compared to composition B not containing copolymer.