Method for the gentle heat-assisted shaping of keratin fibers

Patent metadata

Field	Value
Publication number	US-9681724-B2
Application number	US-201514742791-A
Country	US
Kind code	B2
Filing date	Jun 18, 2015
Priority date	Dec 21, 2012
Publication date	Jun 20, 2017
Grant date	Jun 20, 2017

Abstract

A compound of formula (I) in which R1, R2 and R3 independently represent an aliphatic hydrocarbon group with 6 to 30 carbon atoms, and n and m independently represent integers from 1 to 10, is suitable for restructuring keratin-containing fibers that were exposed to heat of a temperature of 80° C. to 350° C.

First claim

What is claimed is:

1. A method for shaping, keratin-containing fibers, wherein
(i) the fibers are subjected to a heat treatment;
(ii) the heat-treated fibers, subsequently to the heat treatment, are post-treated with a cosmetic agent which includes at least one compound of formula (I) in a cosmetic carrier

where—R1, R2 and R3 independently of each other denote an aliphatic hydrocarbon group having 6 to 30 carbon atoms; and —n and m independently of each other denote integers from 1 to 10,
(iii) and the fibers are reshaped after, prior to or during step (i) by way of reshaping aids.

2. The method according to claim 1 , wherein the shaping of the keratin-containing fibers is straightening of the keratin-containing fibers.

3. The method according to claim 1 , wherein the fibers are subjected to a heat treatment in step (i), while simultaneously styling the fiber at a temperature of 50° C. to 350° C.

4. The method according to claim 1 , wherein the fibers are subjected to a heat treatment in step (i), while simultaneously styling the fiber at a temperature of 80° C. to 280° C.

5. The method according to claim 1 , wherein the fibers are subjected to a heat treatment in step (i), while simultaneously styling the fiber at a temperature of 100° C. to 250° C.

6. The method according to claim 1 , wherein at least one heatable straightening iron is used as a reshaping aid.

7. The method according to claim 1 , wherein the aliphatic hydrocarbon group of the groups R1, R2 and R3 denotes a C6 to C30 alkyl group or a C6 to C30 alkenyl group.

8. The method according to claim 1 , wherein the aliphatic hydrocarbon group of the groups R1, R2, and R3 denotes a C8 to C24 alkyl group or a C8 to C24 alkenyl group.

9. The method according to claim 1 , wherein the aliphatic hydrocarbon group of the groups R1, R2, and R3 denotes a C10 to C20 alkyl group or a C10 to C20 alkenyl group.

10. The method according to claim 1 , wherein the aliphatic hydrocarbon group of the groups R1, R2, and R3 denotes a C12 to C18 alkyl group or a C12 to C18 alkenyl group.

11. The method according to claim 1 , wherein the groups R2 and R3 of formula (I) are identical.

12. The method according to claim 1 , wherein the groups R1 and R2 and R3 of formula (I) are identical.

13. The method according to claim 1 , wherein the compounds of above formula (I) are included in an amount of 0.01 to 15.0 wt. % based on the weight of the ready-to-use agent.

14. The method according to claim 1 , wherein the compounds of above formula (I) are included in an amount of 0.1 to 10.0 wt. % based on the weight of the ready-to-use agent.

15. The method according to claim 1 , wherein the compounds of above formula (I) are included in an amount of 0.1 wt. % to 7.5 wt. % based on the weight of the ready-to-use agent.

16. The method according to claim 1 , wherein n=m in formula (I).

17. The method according to claim 1 , wherein n and m of formula (I) denote integers from 2 to 6.

18. The method according to claim 1 , wherein n and m of formula (I) denote the integers 2, 3 or 4.

Assignees

• Croda Int Plc
• Croda Int Plc

Inventors

• Metten Diane
• Richters Bernd
• Scheffler Rene

Classifications

• A61Q5/06 Primary

  Preparations for styling the hair, e.g. by temporary shaping or colouring · CPC title

• A61K8/4946

  Imidazoles or their condensed derivatives, e.g. benzimidazoles · CPC title

• A45D7/06 Primary

  combined chemical and thermal · CPC title