Process for treating hair fibers using polysiloxane/polyurea

Patent metadata

Field	Value
Publication number	US-9498426-B2
Application number	US-201213440984-A
Country	US
Kind code	B2
Filing date	Apr 5, 2012
Priority date	Dec 13, 2007
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

A process for treating hair fibers comprising: applying to the hair fibers at least one cosmetic composition comprising, in a cosmetically acceptable medium, at least one polysiloxane/polyurea block copolymer; and subsequently or simultaneously heating the hair fibers at a temperature ranging from 50 to 280° C.

First claim

What is claimed is:

1. A process for treating hair fibers comprising:
applying to the hair fibers at least one cosmetic composition comprising, in a cosmetically acceptable medium, at least one non-ionic polysiloxane/polyurea block copolymer, and
heating the hair fibers at a temperature ranging from 60 to 280° C.,
wherein the heating step occurs either simultaneously with, or successively to, the applying step;
wherein the at least one copolymer comprises only polysiloxane blocks and polyurea blocks; and
wherein the polysiloxane block of the at least one copolymer is present in an amount greater than 50% by weight, relative to the total weight of the copolymer.

2. The process of claim 1 , wherein the polysiloxane block of the at least one copolymer is present in an amount greater than 90% by weight, relative to the total weight of the copolymer.

3. The process of claim 1 , wherein the at least one polysiloxane/polyurea copolymer is chosen from those of formula (I):

wherein:
R is a monovalent hydrocarbon-based radical, optionally substituted by fluorine or chlorine, having 1 to 20 carbon atoms;
X is an alkylene radical having 1 to 20 carbon atoms, in which non-neighboring methylene units may be replaced by —O— radicals;
A is an oxygen atom or an —NR′— amino radical;
Z is an oxygen atom or an —NR′— amino radical;
R′ is hydrogen or an alkyl radical having 1 to 10 carbon atoms;
Y is a divalent hydrocarbon-based radical, where appropriate optionally substituted by fluorine or chlorine, having 1 to 20 carbon atoms;
D is an alkylene radical, optionally substituted by fluorine, chlorine, C 1 -C 6 alkyl or C 1 -C 6 alkyl ester, having 1 to 700 carbon atoms, wherein non-neighboring methylene units may be replaced by —O—, —COO—, —OCO— or —OCOO— radicals;
n is a number ranging from 1 to 4,000;
a is a number of at least 1;
b is a number ranging from 0 to 40;
c is a number ranging from 0 to 30; and
d is a number greater than 0,
on the condition that A is an —NH— radical in at least one of the (a) units.

4. A process of claim 1 , wherein the at least one copolymer is obtained by a process comprising:
reacting a cyclic silazane of formulae (2) or (2′):

with an organic silicon compound of formula (3):
(HO)(R 2 SiO) n-1 [H]  (3)

to give an aminoalkylpolydiorganosiloxane of formula (4):
H 2 N—X—[SiR 2 O] n SiR 2 —X—NH 2   (4);

wherein the aminoalkylpolydiorganosiloxane of formula (4) is then polymerized with a diisocyanate of formula (5):
OCN—Y—NCO  (5); and

further wherein
X is an alkylene radical having 1 to 20 carbon atoms, in which non-neighboring methylene units may be replaced by —O— radicals;
Y is a divalent hydrocarbon-based radical, where appropriate optionally substituted by fluorine or chlorine, having 1 to 20 carbon atoms;
R is a monovalent hydrocarbon-based radical, optionally substituted by fluorine or chlorine, having 1 to 20 carbon atoms; and
n is a number ranging from 1 to 4,000.

5. A process of claim 1 , wherein the at least one copolymer is polyureadimethicone.

6. A process of claim 1 , wherein the at least one non-ionic polysiloxane/polyurea block copolymer is present in an amount ranging from 0.05 to 20%, relative to the weight of the composition.

7. A process of claim 1 , wherein the at least one non-ionic polysiloxane/polyurea block copolymer is present in an amount ranging from 0.1 to 15% of the weight of the composition applied.

8. A process of claim 1 , wherein the at least one non-ionic polysiloxane/polyurea block copolymer is present in an amount ranging from 0.5 to 10% of the weight of the composition applied.

9. A process of claim 1 , wherein the at least one composition further comprises at least one adjuvant chosen from organomodified silicones; cationic, non-ionic, anionic and amphoteric polymers; peptides and derivatives thereof; protein hydrolysates; waxes; swelling agents; penetrants; anionic, cationic, non-ionic, amphoteric and zwitterionic surfactants; agents for combating hair loss; anti-dandruff agents; natural and synthetic associative and non-associative thickeners; suspension agents; sequestering agents; sunscreens; vitamins and provitamins; fatty acids; fatty alcohols; mineral, plant and synthetic oils; fragrances and preservatives.

10. A process of claim 1 , wherein the at least one composition is applied to wet hair fibers.

11. A process of claim 1 , wherein the hair fibers are heated at a temperature ranging from 120 to 220° C.

12. A process of claim 1 , further comprising at least one additional operation chosen from permanent waving, oxidation dyeing, bleaching, and straightening.

Assignees

• Vic Gabin
• Brun Gaëlle
• Gourlaouen Luc
• Oreal

Inventors

• Vic Gabin
• Brun Gaëlle
• Gourlaouen Luc

Classifications

• A61Q5/06

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

• A61K8/898 Primary

  containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine · CPC title

• A61Q5/00

  Preparations for care of the hair · CPC title

• A61K8/87

  Polyurethanes · CPC title

• A61K8/89 Primary

  Polysiloxanes · CPC title