Polymer And Cosmetic Preparation

• US 20090123408A1
• Filed: 06/23/2006
• Published: 05/14/2009
• Est. Priority Date: 06/23/2005
• Status: Active Grant

• Current Assignee: Shiseido Company Limited, Toho Chemical Industry Co., Ltd.
• Original Assignee: Shiseido Company Limited, Toho Chemical Industry Co., Ltd.
• Inventors: Yokoyama, Hiroaki, Suzuki, Akio, Nozawa, Takuji, Noda, Akira, Kimura, Tomohiko
• Granted Patent: US 7,872,083 B2
• Time in Patent Office: Days
• US Class Current: 424/70.220
• CPC Class Codes: A61K 2800/5428 amphoteric or zwitterionic
• CPC Class Codes: A61K 8/817 Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair
• CPC Class Codes: C08F 220/603 and containing oxygen in addition to the carbonamido oxygen and nitrogen
• CPC Class Codes: C08F 226/04 Diallylamine

Abstract

The present invention provides a novel polymer that can impart a moisturized feeling to the hair and skin after use. A polymer comprising an amphoteric monomer represented by the following general formula (I) and a cationic monomer represented by the following general formula (II) as the essential constituent monomers:

(wherein, R₁ represents a hydrogen atom or a methyl group; R₂ and R₃ each independently represent an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, a phenyl group, or a —(CH₂CH₂O)_nR₇ group (n is an integer of 1 to 50; and R₇ represents a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or a phenyl group); R₄ represents an alkylene group having 1 to 3 carbon atoms; A represents an oxygen atom or NR₈ (R₈ represents a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms, a phenyl group, or a —(CH₂CH₂O)_nR₉ group (n is an integer of 1 to 50; R₉ represents a hydrogen atom, an alkyl or alkoxy group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, or a phenyl group)); and B represents an alkylene group having 1 to 4 carbon atoms), and

(wherein, R₅ and R₆ each independently represent a hydrogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms; and Y⁻ represents a monovalent inorganic or organic anion).

Claims

1. :

A polymer comprising an amphoteric monomer represented by the following general formula (I) and a cationic monomer represented by the following general formula (II) as the essential constituent monomers;

2. :

The polymer of claim 1, wherein the molar ratio of the cationic monomer to the amphoteric monomer is 1;

9 to 9;

1.

3. :

The polymer, of claim 1, wherein the average molecular weight of the polymer is from 10,000 to 1,000,000.

4. :

A cosmetic preparation comprising the polymer of claim 1.

5. :

The cosmetic preparation of claim 4, further comprising an anionic surfactant.

6. :

A hair cleanser including the cosmetic preparation of claim 4.

7. :

The polymer of claim 2, wherein the average molecular weight of the polymer is from 10,000 to 1,000,000.

8. :

A skin cleanser including the cosmetic preparation of claim 4.

9. :

A hair cleanser including the cosmetic preparation of claim 5.

10. :

A skin cleanser including the cosmetic preparation of claim 5.

11. :

The polymer of claim 1, wherein at least one of R₂ and R₃ is an alkyl group selected from the group consisting of methyl, ethyl, propyl, butyl, 2-hydroxyethyl, 2-hydroxypropyl, trifluoromethyl, trifluoroethyl, and combinations thereof.

12. :

The polymer of claim 1, wherein at least one of R₂ and R₃ is an alkoxy group selected from the group consisting of methoxy, ethoxy, propoxy, isopropoxy, butoxy, tert-butoxy, and combinations thereof.

13. :

The polymer of claim 1, wherein at least one of R₂ and R₃ is a cycloalkyl group selected from the group consisting of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and combinations thereof.

14. :

The polymer of claim 1, wherein R₄ is selected from the group consisting of methylene, ethylene, propylene, isopropylene, 2-hydroxyethylene, 2-hydroxypropylene, difluoromethylene, difluoroethylene, and combinations thereof.

15. :

The polymer of claim 1, wherein Y⁻

is selected from the group consisting of chloride ion, fluoride ion, iodide ion, and the like, and examples of the monovalent organic anions include sulfate ion, acetate ion, benzenesulfonate ion, phosphate ion, and combinations thereof.

16. :

The polymer of claim 1, wherein the amphoteric monomer is selected from the group consisting of N,N-dimethylaminopropyl (meth)acrylamide acetate betaine, N,N-dimethylaminoethyl (meth)acrylate acetate betaine, and the like. N,N-dimethylaminopropyl (meth)acrylamide acetate betaine, and combinations thereof.

17. :

The polymer of claim 1, wherein the cationic monomer is selected from the group consisting of dimethyldiallylammonium chloride, diethyldiallylammonium chloride, dipropyldiallylammonium chloride, dimethyldiallylammonium sulfate, diethyldiallylammonium sulfate, dipropyldiallylammonium sulfate, and combinations thereof.

18. :

The polymer of claim 1, wherein the cationic monomer is dimethyldiallyl-ammonium chloride.

19. :

The polymer of claim 1, wherein the amphoteric monomer is N,N-dimethylaminopropylacrylamide acetate betaine and the cationic monomer is dimethyldiallylammonium chloride.

20. :

The polymer of claim 1, wherein the amphoteric monomer is N,N-dimethylaminopropylacrylamide acetate betaine and the cationic monomer is diethyldiallylammonium chloride.