Shaping keratin fibres using dialdehyde compounds

Patent metadata

Field	Value
Publication number	US-2016367451-A1
Application number	US-201615185439-A
Country	US
Kind code	A1
Filing date	Jun 17, 2016
Priority date	Jun 18, 2015
Publication date	Dec 22, 2016
Grant date	—

Abstract

Described herein is a method for shaping keratin fibres including (i) providing a crosslinking composition comprising from about 1% to about 20% of a dialdehyde compound, optionally a photocatalyst, and a cosmetically acceptable carrier; (ii) applying the crosslinking composition to keratin fibres; and (iii) mechanically shaping the keratin fibres with an appliance at a temperature of about 50° C. to about 280° C.

First claim

What is claimed is:

1 . A method for shaping keratin fibres comprising:
a) providing a crosslinking composition, wherein the crosslinking composition comprises a cosmetically acceptable carrier and from about 1% to about 20% of one or more dialdehyde compounds having the structure:

wherein R 1 , R 2 , and R 3 are independently selected from the group consisting of hydrogen, hydroxy, C 1 -C 6 alkoxy, C 1 -C 12 alkyl, C 6 -C 12 aryl, and combinations thereof;
wherein if one of R 1 or R 2 is hydrogen, then at least two of R 1 , R 2 , or R 3 is independently selected from the group consisting of hydroxy, C 1 -C 6 alkoxy, C 1 -C 12 alkyl, C 6 -C 12 aryl, and combinations thereof;

b) applying the dialdehyde composition to keratin fibres; and
c) mechanically shaping the keratin fibres with an appliance at a temperature of about 50° C. to about 280° C.

2 . The method of claim 1 , wherein the crosslinking composition further comprises a photocatalyst, wherein the photocatalyst is a hydroxy-substituted aromatic compound.

3 . The method of claim 2 , wherein the crosslinking composition has not been exposed to electromagnetic radiation having a wavelength of about 750 nm or less for about 30 min or more.

4 . The method of claim 3 , wherein the mechanically shaping further comprises exposing the crosslinking composition to electromagnetic radiation having a wavelength of from about 300 nm to about 750 nm.

5 . The method according to claim 2 , wherein the photocatalyst can be activated to a photo-excited state by excitation with incident radiation with a wavelength of from about 300 nm to about 750 nm, and wherein the appliance emits radiation with a wavelength from about 300 nm to about 750 nm.

6 . The method according to claim 2 , wherein the hydroxy-substituted aromatic compound is selected from the group consisting of 8-hydroxyquinoline, 4′,5′-dibromofluorescein, Eosin Y, and combinations thereof.

7 . The method according to claim 1 , wherein the mechanical shaping of keratin fibres is straightening of keratin fibres.

8 . The method according to claim 1 , wherein the mechanical shaping of keratin fibres is curling of keratin fibres.

9 . The method according to claim 1 , wherein the appliance comprises light-emitting diodes.

10 . The method according to claim 1 , wherein the cross-linking composition is substantially free of formaldehyde, derivatives of formaldehyde, formalin, and any compound that produces formaldehyde upon heating.

11 . The method according to claim 1 , wherein the method does not comprise a rinsing step.

12 . The method according to claim 1 , wherein the crosslinking composition further comprises from about 2% to about 18% of a reducing sugar, by weight of the crosslinking composition.

13 . The method according to claim 1 , wherein the crosslinking composition further comprises 1,2-bis(2-maleimidoethoxy)ethane.

14 . The method according to claim 1 , wherein the dialdehyde compound is pentodialdose.

15 . The method according to claim 1 , wherein the crosslinking composition further comprises a conditioning agent, and wherein the conditioning agent is a reaction product of an aminosilane and a polysiloxane.

16 . A cross-linking composition for shaping keratin fibers comprising a cosmetically acceptable carrier and from about 1% to about 20% of one or more dialdehyde compounds having the structure:

wherein R 1 , R 2 , and R 3 are independently selected from the group consisting of hydrogen, hydroxy, C 1 -C 6 alkoxy, C 1 -C 12 alkyl, C 6 -C 12 aryl, and combinations thereof;
wherein if one of R 1 or R 2 is hydrogen, then at least two of R 1 , R 2 , or R 3 is independently selected from the group consisting of hydroxy, C 1 -C 6 alkoxy, C 1 -C 12 alkyl, C 6 -C 12 aryl, and combinations thereof.

17 . The crosslinking composition of claim 16 , wherein the crosslinking composition further comprises a photocatalyst, wherein the photocatalyst is a hydroxy-substituted aromatic compound.

18 . The crosslinking composition of claim 17 , wherein the crosslinking composition has not been exposed to electromagnetic radiation having a wavelength of about 750 nm or less for about 30 min or more.

19 . The crosslinking composition of claim 18 , wherein the mechanically shaping further comprises exposing the crosslinking composition to electromagnetic radiation having a wavelength of from about 300 nm to about 750 nm.

20 . The crosslinking composition of claim 17 , wherein the photocatalyst can be activated to a photo-excited state by excitation with incident radiation with a wavelength of from about 300 nm to about 750 nm, and wherein the appliance emits radiation with a wavelength from about 300 nm to about 750 nm.

Assignees

• Procter & Gamble

Inventors

• Washington Randy Purnell

Classifications

• A61K8/33 Primary

  containing oxygen · CPC title

• A61K8/602

  Glycosides, e.g. rutin · CPC title

• A61K8/498

  having 6-membered rings or their condensed derivatives, e.g. coumarin · CPC title

• A61Q5/06

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

• A61Q5/04

  Preparations for permanent waving or straightening the hair · CPC title