ORGANOPOLYSILOXANE

• US 20100203002A1
• Filed: 07/18/2008
• Published: 08/12/2010
• Est. Priority Date: 07/20/2007
• Status: Abandoned Application

• Current Assignee: KAO Corporation
• Original Assignee: KAO Corporation
• Inventors: Kitada, Kayoko, Kodate, Takashi, Ehara, Masayoshi, Ueyama, Kenichi, Fukuhara, Kazuhisa
• Application Number:
  US12/669,045
• Publication Number:
  US 20100203002A1
• Time in Patent Office: Days
• US Class Current: 424/70.122
• 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):

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 said segment is bound to each of at least two silicon atoms of an organopolysiloxane segment as a main chain via an alkylene group comprising a hetero atom, and wherein

the number-average molecular weight of the poly(N-acylalkyleneimine) segment is 800 to 1600,

the mass ratio (a/b) of the organopolysiloxane segment (a) as a main chain and the poly(N-acylalkyleneimine) segment (b) 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.

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)

wherein R² represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a group R³-Ph-R⁴—

, wherein R³ represents a hydrogen atom, a methyl group, or a methoxy group;

R⁴ represents a bond or a saturated or unsaturated divalent hydrocarbon group having 1 to 3 carbon atoms; and

Ph represents a paraphenylene group, A represents a bond or a saturated divalent hydrocarbon group having 1 to 4 carbon atoms, Y and Z each independently represent a hydrogen atom or a hydroxy group, and p and q each independently are an integer of 0 to 5, provided that when p=q=0, Z represents a hydroxy group, and R² is not either a hydrogen atom or a group R³-Ph-;

(b2) N-alkylpyrrolidone or N-alkenylpyrrolidone in which an alkyl group or an alkenyl group having 1 to 18 carbon atoms binds to a nitrogen atom;

(b3) an alkylene carbonate having 2 to 4 carbon atoms;

(b4) a polypropylene glycol having a number-average molecular weight of 100 to 1000; and

(b5) a lactone or a cyclic ketone represented by the general formula (3), (4), or (5);

wherein X represents a methylene group or an oxygen atom, R⁵ and R⁶ represent substituents different from each other, and a and b each independently are 0 or 1.

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.