ORGANOPOLYSILOXANE

• US 20160128928A1
• Filed: 01/19/2016
• Published: 05/12/2016
• Est. Priority Date: 07/20/2007
• Status: Active Grant

• Current Assignee: KAO Corporation
• Original Assignee: KAO Corporation
• Inventors: KODATE, Takashi, KITADA, Kayoko, UEYAMA, Kenichi, EHARA, Masayoshi, FUKUHARA, Kazuhisa
• Granted Patent: US 10,456,351 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61K 2800/54 Polymers characterized by specific structures/properties
• 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 77/26 nitrogen-containing groups
• CPC Class Codes: C08G 77/452 containing nitrogen-containing sequences
• 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

There is provided an organopolysiloxane which is excellent in extensibility as well as solubility and dispersibility in water and lower alcohols. There is provided an organopolysiloxane with a poly(N-acylalkyleneimine) segment having a repeating unit represented by the following general formula (1):

wherein R¹ represents a hydrogen atom or an alkyl group, an aralkyl group, or an aryl group each having 1 to 22 carbon atoms, and n is 2 or 3, wherein the segment is bound to each of at least two silicon atoms of an organopolysiloxane segment as a main chain via an alkylene group containing a hetero atom, and wherein the number-average molecular weight of the segment is 800 to 1600, the mass ratio of the organopolysiloxane segment as a main chain and the poly(N-acylalkyleneimine) segment is 65/35 to 82/18, and the weight-average molecular weight of the organopolysiloxane segment as a main chain is 10,000 to 100,000.

Claims

1. An organopolysiloxane comprising a poly(N-acylalkyleneimine) segment having a repeating unit represented by the following general formula (1):

2. A hair cosmetic comprising the organopolysiloxane according to claim 1.

3. The hair cosmetic according to claim 2 further comprising one or more organic solvents selected from the group consisting of the following (b1) to (b5):

(b1) a compound represented by the general formula (2)

4. The hair cosmetic according to claim 3, wherein the organic solvent is at least one selected from dipropylene glycol, 1,3-butanediol, benzyl alcohol, phenoxyethanol, 2-benzyloxyethanol, propylene carbonate, and polypropylene glycol (number-average molecular weight, 300 to 500).

5. The hair cosmetic according to claim 3, wherein the organic solvent is a lower alcohol having 1 to 6 carbon atoms.

6. The hair cosmetic according to claim 4 comprising an organic carboxylic acid which may have a hydroxy group or a salt thereof.

7. The hair cosmetic according to claim 6, wherein the organic carboxylic acid which may have a hydroxy group is a hydroxycarboxylic acid having 2 to 6 carbon atoms.

8. The hair cosmetic according to any one of claims 2 to 7 further comprising a set polymer.

9. The hair cosmetic according to claim 6 or 7, wherein the pH is 2.5 to 4.5 at 25°

C. when diluted 20-fold by mass with water.

10. The hair cosmetic according to any one of claims 2 to 9, which is a semisolid styling composition.