Reductive Decoloration of Keratin-Containing Fibers

• US 20100146710A1
• Filed: 02/22/2010
• Published: 06/17/2010
• Est. Priority Date: 08/23/2007
• Status: Active Grant

• Current Assignee: Henkel AG & Co KGaA
• Original Assignee: Henkel AG & Co KGaA
• Inventors: Neubueser, Inge, Emmerling, Winfried, Bartels, Holger
• Granted Patent: US 8,753,408 B2
• Time in Patent Office: Days
• US Class Current: 8/107
• CPC Class Codes: A61K 8/0216 Solid or semisolid forms
• CPC Class Codes: A61K 8/447 containing sulfur
• CPC Class Codes: A61K 8/4973 with oxygen as the only hetero atom
• CPC Class Codes: A61Q 5/08 Preparations for bleaching the hair

Abstract

The invention relates to compositions comprising a combination of (a) at least one organic compound which carries at least one thiol group and at least one optionally derivatized carboxyl group, for example L-cysteine, and (b) at least one organic compound selected from the group which is formed from cyclic, organic carbonates, glycerol and its derivatives and C₄-C₁₂ fatty acid dimethylamides. Using these low-odor compositions it is possible to reductively decolor colored keratin-containing fibers, in particular human hair, in a rapid and effective manner.

Claims

1. Agent for reductive decoloration of keratin-containing fibers comprising in a vehicle an active ingredient combination of

(a) at least one organic compound having at least one thiol group and at least one optionally derivatized carboxyl group, and

(b) at least one organic compound chosen from the group formed from

(i) cyclic organic carbonates and

(ii) glycerol and its derivatives and

(iii) C₄-C₁₂ fatty acid dimethylamides.

2. Agent according to claim 1, wherein component (a) is selected from at least one compound of formula (I)

HS—

X—

COOM 

 

(I)

wherein

X is a saturated or unsaturated, linear or branched and aliphatic hydrocarbon structure optionally substituted with at least one of a thiol, carboxyl, carboxylate, hydroxy, NH₂, (C₁ to C₆)-alkylamino, (C₁ to C₆)-dialkylamino, and/or (C₁ to C₆)-hydroxyalkyl, and

M is hydrogen, a C₁ to C₈ alkyl group or an equivalent of a monovalent or polyvalent cation.

3. Agent according to claim 1, wherein component (a) is chosen from at least one representative of the group formed from L-cysteine (acid or salt), D-cysteine (acid or salt), D,L-cysteine (acid or salt), cysteamine and acetylcysteine.

4. Agent according to claim 1, wherein component (b) (i) is chosen from at least one cyclic carbonic acid ester of formula (II-1)

wherein R¹, R², R³ and R⁴ independently are hydrogen or organic radicals which may additionally be substituted with further groups.

5. Agent according to claim 1, wherein as component (b) (ii) glycerol and at least one glyceride according to formula (III) is present

wherein R¹, R² and R³ independently are hydrogen or a C₂-C₁₀ acyl group.

6. Agent according to claim 1, wherein component (b) (III) is chosen from at least one compound of formula (IV)

wherein R is a linear or branched C₄ to C₁₂ alkyl group.

7. Agent according to claim 1, wherein the compounds of component (a) are present in an amount of 1 to 10 wt %, in each based on total weight of the agent.

8. Agent according to claim 1, wherein the compounds of component (b) are present in an amount of 5 wt % to 50 wt %, each based on total weight of the agent.

9. Agent according to claim 1, wherein the agent has a pH of from 1 to 9.

10. Agent according to claim 1, further comprising oxalic acid.

11. Agent according to claim 1, further comprising at least one reductone.

12. Agent according to claim 1, further comprising at least one thickening polymer.

13. Method for reductive decolorization of keratin-containing fibers, comprising applying an agent according to claim 1 to the keratin-containing fibers and rinsing off the agent after a treatment time.