Dye composition based on copolymers derived from the polymerization of at least one crotonic acid monomer or crotonic acid derivative and of at least one thickening polymer bearing (meth)acrylic acid unit(s), and process for dyeing keratin fibers using same

Abstract

The present invention relates to a composition for dyeing keratin fibers, comprising at least (i) one or more copolymers derived from the polymerization of at least one crotonic acid monomer or crotonic acid derivative and of at least two different vinyl ester monomers, (ii) one or more thickening polymers bearing (meth)acrylic acid unit(s), and (iii) one or more pigments. The invention also relates to a dyeing process in which said composition is applied to keratin fibers, the operation optionally being followed by drying. The composition makes it possible to obtain temporary dyeing having the advantage of forming a transfer-resistant deposit, leaving the treated fibers individualized, with an improved cosmetic feel.

Claims

1. A composition for dyeing keratin fibers comprising: (i) at least one copolymer derived from the polymerization of at least one crotonic acid monomer or crotonic acid derivative and of at least two different vinyl ester monomers; (ii) at least one thickening polymer bearing at least one (meth)acrylic acid unit, chosen from: (a) acrylic associative polymers; (b) crosslinked acrylic acid homopolymers; (c) crosslinked copolymers of (meth)acrylic acid and of (C1-C6)alkyl acrylate; and/or (d) ammonium acrylate homopolymers or copolymers of ammonium acrylate and of acrylamide; and (iii) at least one pigment.

2. The composition according to claim 1, wherein the at least one crotonic acid derivative is chosen from crotonic acid esters or amides.

3. The composition according to claim 1, wherein the at least one crotonic acid derivative is chosen from crotonic acid esters of formula CH.sub.3CH═CHCOOR′1 with R′1 representing a linear, branched or cyclic, saturated or unsaturated, optionally aromatic carbon-based or hydrocarbon-based chain, containing 1 to 30 carbon atoms, optionally comprising at least one function chosen from —OH, —OR′ with R′ representing C1-C6 alkyl, —CN, or —X halogen.

4. The composition according to claim 1, wherein the at least one crotonic acid derivative is chosen from crotonic acid amides of formula CH.sub.3CH═CHCONR′2R″2 with R′2 and R″2, which may be identical or different, representing hydrogen or a linear, branched or cyclic, saturated or unsaturated, optionally aromatic, carbon-based or hydrocarbon-based chain, containing 1 to 30 carbon atoms, optionally comprising at least one function chosen from —OH, —OR′ with R′ representing C1-C6 alkyl, —CN, or —X halogen.

5. The composition according to claim 1, wherein the at least two different vinyl ester monomers are independently chosen from vinyl acetate, vinyl propionate, vinyl butyrate, vinyl ethylhexanoate, vinyl neononanoate, vinyl neododecanoate, vinyl neodecanoate, vinyl pivalate, vinyl cyclohexanoate, vinyl benzoate, vinyl 4-tert-butylbenzoate, or vinyl trifluoroacetate.

6. The composition according to claim 1, wherein the at least one copolymer is chosen from copolymers derived from the polymerization of crotonic acid, vinyl acetate and vinyl propionate, copolymers derived from the polymerization of crotonic acid, vinyl acetate and vinyl neodecanoate, and mixtures thereof.

7. The composition according to claim 1, wherein the at least one copolymer comprises a crotonic acid/vinyl acetate/vinyl neodecanoate terpolymer.

8. The composition according to claim 1, wherein the at least one copolymer further comprises other monomers chosen from allylic esters, methallylic esters, or vinyl ethers.

9. The composition according to claim 1, wherein the at least one copolymer derived from the polymerization of at least one crotonic acid monomer or crotonic acid derivative and of at least two different vinyl ester monomers is present in an amount ranging from 0.05% to 15% by weight, relative to the weight of the composition.

10. The composition according to claim 1, wherein the at least one thickening polymer bearing at least one (meth)acrylic acid unit(s) is crosslinked.

11. The composition according to claim 1, wherein the at least one thickening polymer bearing at least one (meth)acrylic acid unit is chosen from crosslinked acrylic acid homopolymers.

12. The composition according to claim 1, wherein the at least one thickening polymer bearing at least one (meth)acrylic acid unit is present in a total amount from 0.001% to 20% by weight, relative to the total weight of the final composition.

13. The composition according to claim 1, wherein the composition further comprises at least one fatty substance, chosen from silicones and non-silicone fatty substances that are liquid at 30° C. and at atmospheric pressure.

14. A process for the cosmetic treatment of keratin fibers, comprising applying to the fibers a composition comprising: (i) at least one copolymer derived from the polymerization of at least one crotonic acid monomer or crotonic acid derivative and of at least two different vinyl ester monomers; (ii) at least one thickening polymer bearing at least one (meth)acrylic acid unit, chosen from: (a) acrylic associative polymers; (b) crosslinked acrylic acid homopolymers; (c) crosslinked copolymers of (meth)acrylic acid and of (C1-C6)alkyl acrylate; and/or (d) ammonium acrylate homopolymers or copolymers of ammonium acrylate and of acrylamide; and (iii) at least one pigment.

15. A process for dyeing human hair comprising applying to the hair a composition comprising: (i) at least one copolymer derived from the polymerization of at least one crotonic acid monomer or crotonic acid derivative and of at least two different vinyl ester monomers; (ii) at least one thickening polymer bearing at least one (meth)acrylic acid unit, chosen from: (a) acrylic associative polymers; (b) crosslinked acrylic acid homopolymers; (c) crosslinked copolymers of (meth)acrylic acid and of (C1-C6)alkyl acrylate; and/or (d) ammonium acrylate homopolymers or copolymers of ammonium acrylate and of acrylamide; and (iii) at least one pigment.

Description

EXAMPLES

Example 1

(1) Compositions (g AM/100 g)

(2) TABLE-US-00001 A1 INVENTION VA/crotonates/vinyl neodecanoate copolymer 2 Neutralizer (aminomethylpropanol and/or qs triethanolamine) Carbomer 0.75 Mica (and) titanium dioxide 10 Phenoxyethanol 0.7 Ethanol 7.5 PEG-40 Hydrogenated castor oil 1 Cocos nucifera oil 2 Water qs 100
Protocol

(3) Composition A1 is applied to locks of yack hair at a rate of 1 g of composition per gram of lock. After application, the locks are combed, dried with a hairdryer and then combed again.

(4) Results: “Cosmetic Feel” Performance

(5) The performance qualities in terms of cosmetic feel were evaluated on dried locks by five experts, in a blind test.

(6) In 100% of the cases, the experts judged that composition A1 according to the invention afforded smooth locks with clearly individualized hair strands, having a pleasant cosmetic feel, especially good softness, good suppleness and absence of tackiness.

Example 2

(7) Compositions (g AM/100 g)

(8) TABLE-US-00002 A2 B2 C2 Invention comparative comparative Phenoxyethanol 0.7 0.7 0.7 Cocos nucifera oil 2.5 2.5 2.5 CI 77891 (and) synthetic 10 10 10 fluorophlogopite (and) CI 15850 VA/crotonates/vinyl 3 — — neodecanoate copolymer Carbomer 0.75 0.75 0.75 Polyvinylcaprolactam — 3 — VP/dimethylaminoethyl — — 3 methacrylate copolymer Ethanol 7.5 7.5 7.5 Neutralizer (triethanolamine qs qs qs and/or aminomethylpropanol) PEG-40 Hydrogenated castor oil 1 1 1 Water qs 100 qs 100 qs 100
Protocol

(9) Composition A2, B2 or C2 is applied to locks of yack hair at a rate of 1 g of composition per gram of lock.

(10) The locks are dried with a hairdryer and then combed.

(11) The locks are then rubbed on a white cloth.

(12) Results: “Transfer-Resistance” Performance

(13) The performance qualities in terms of transfer resistance were evaluated by five experts, in a blind test, who visually evaluated the amount of pigment present on the white cloth after rubbing.

(14) In 100% of the cases, the experts judged that composition A2 according to the invention, compared with compositions B2 and C2, led to a very markedly smaller amount of pigment(s) present on the cloth. Composition A according to the invention thus has better transfer-resistance properties than the comparative compositions B2 and C2.

Example 3

(15) Compositions in Gel Form (g AM/100 g)

(16) TABLE-US-00003 C3 D3 A3 COMPAR- COMPAR- INVENTION ATIVE ATIVE VA/crotonates/vinyl 2 2 2 neodecanoate copolymer Neutralizer qs qs qs (aminomethylpropanol) Carbomer 0.5 — — Cetylhydroxyethylcellulose — 0.5 — Scleroglucan gum — — 0.5 Mica (and) titanium dioxide 10 10 10 Phenoxyethanol 0.7 0.7 0.7 Ethanol 7.5 7.5 7.5 Water qs 100 qs 100 qs 100
Results: “Gel Appearance” Performance

(17) In 100% of the cases, the experts judged that composition A3 of the invention, compared with compositions C3 and D3, led to the production of a smooth, glossy and consistent gel.

Example 4

(18) Compositions (g AM/100 g)

(19) TABLE-US-00004 A4 E INVENTION Comparative VA/crotonates/vinyl neodecanoate 3 3 copolymer Neutralizer (aminomethylpropanol qs qs and/or triethanolamine) Carbomer 0.75 — CI 77891 (and) synthetic 10 10 fluorphlogopite (and) CI 15850 Phenoxyethanol 0.7 0.7 Ethanol 7.5 7.5 PEG-40 Hydrogenated castor oil 1 1 Cocos nucifera oil 2 2 Water qs 100 qs 100
Protocol

(20) Composition A4 and composition E are applied to locks of yack hair at a rate of 1 g of composition per gram of lock.

(21) After application, the locks are combed, dried with a hairdryer and then combed again.

(22) Results: Performance in Terms of Colour

(23) The performance in terms of homogeneity and intensity of the color are evaluated on dried locks of hair, by 5 experts during a blind test.

(24) 100% of the experts have found that the lock of hair treated with composition A4 according to the invention has a more intense and homogeneous color than comparative composition E.