Hair styling method

• US 8,865,146 B2
• Filed: 11/18/2010
• Issued: 10/21/2014
• Est. Priority Date: 11/18/2009
• Status: Active Grant

• Current Assignee: KAO Corporation
• Original Assignee: KAO Corporation
• Inventors: Fukuhara, Kazuhisa, Tada, Kiyotake, Kodate, Takashi, Kobaru, Shuichiro
• Primary Examiner(s): VENKAT, JYOTHSNA A
• Application Number:
  US13/505,355
• Publication Number:
  US 20120216823A1
• Time in Patent Office: 1,433 Days
• Field of Search: None
• US Class Current: 424/70.12
• CPC Class Codes: A61K 8/898 containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
• CPC Class Codes: A61Q 5/06 Preparations for styling the hair, e.g. by temporary shaping or colouring
• CPC Class Codes: C08G 73/0233 Polyamines derived from (poly)oxazolines, (poly)oxazines or having pendant acyl groups
• CPC Class Codes: C08G 77/26 nitrogen-containing groups
• CPC Class Codes: C08G 77/388 containing nitrogen
• CPC Class Codes: C08G 81/00 Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers involving only carbon-to-carbon unsaturated bond reactions C08F299/00 ; polyester-amides C08G69/44; polyester-imides C08G73/16; polyamides-imides C08G73/14; block- or graft polymers containing polysiloxane sequences C08G77/42

Abstract

A hair styling method, including the steps of:

• • applying a hair cosmetic composition containing a component (A) to the hair:
  • Component (A): an organopolysiloxane wherein at least two silicon atoms in organopolysiloxane segments which constitute the main chain of the organopolysiloxane (a) are bound to poly(N-acylalkyleneimine) segments (b) consisting of repeating units represented by the following general formula (1):

via respective alkylene groups each containing a hetero atom,

• • wherein the number-average molecular weight of the poly(N-acylalkyleneimine) segments is from 1,200 to 5,500,
  • wherein the mass ratio of the component (a) to the component (b) [i.e., a/b] is from 35/65 to 60/40,
  • wherein the weight-average molecular weights of the organopolysiloxane segments between adjacent two poly(N-acylalkyleneimine) segments (b) are from 1,300 to 5,500, and wherein the weight-average molecular weight of the organopolysiloxane segments (a) is from 7,000 to 100,000;
  • forming the hair style at a hair temperature of 50° C. or higher;
  • and subsequently cooling the hair temperature to lower than 50° C. to fix the formed hair style.

Claims

1. A hair styling method comprising:

applying a hair cosmetic composition comprising component (A) to the hair;

Component (A);

an organopolysiloxane comprising at least two silicon atoms in an organopolysiloxane segment (a) constituting a main chain of the organopolysiloxane that are each bound to a poly(N-acylalkyleneimine) segment (b) consisting of repeating units represented by general formula (1) via an alkylene group containing a hetero atom;

2. The hair styling method according to claim 1, wherein at least one silicon atom in the component (A) to which a poly(N-acylalkyleneimine) segment (b) is bounded via the heteroatom-containing alkylene group is a silicon atom other than silicon atoms at both ends of the organopolysiloxane segment (a).

3. The hair styling method according to claim 1, wherein R¹ in the general formula (1) is an alkyl group having 1 to 3 carbon atoms.

4. The hair styling method according to claim 1, further comprising cooling the hair prior to, simultaneous with, or after said forming of the hair style, wherein the hair is cooled to a temperature lower than 50°

C.

5. The hair styling method according to claim 1, further comprising re-forming the hair style of the hair at a hair temperature of 50°

C. or higher, and subsequently cooling the hair temperature to lower than 50°

C. to fix the formed hair style.

6. The hair styling method according to claim 1, further comprising applying water to the hair prior to applying the hair cosmetic composition to the hair.

7. The hair styling method according to claim 1, further comprising drying the hair after said applying and before said forming the hair style at a hair temperature of 50°

C. or higher.

8. The hair styling method according to claim 4, further comprising re-forming the hair style of the hair at a hair temperature of 50°

C. or higher, and subsequently cooling the hair temperature to lower than 50°

C. to fix the formed hair style.

9. The hair styling method according to claim 8, further comprising applying water to the hair prior to applying the hair cosmetic composition to the hair.

10. The hair styling method according to claim 9, further comprising drying the hair after said applying and before said forming the hair style at a hair temperature of 50°

C. or higher.