Protein-acrylate copolymer and hair conditioning product comprising said polymer

• US 9,421,159 B2
• Filed: 03/25/2011
• Issued: 08/23/2016
• Est. Priority Date: 03/30/2010
• Status: Active Grant

• Current Assignee: Croda International PLC
• Original Assignee: Croda International PLC
• Inventors: Chahal, Surinder Pall, Tooley, Ian Robert, James, Neil Howard, Stricane, Charlotte Odette Camille
• Primary Examiner(s): Holloman, Nannette
• Application Number:
  US13/634,662
• Publication Number:
  US 20130004450A1
• Time in Patent Office: 1,978 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61K 8/8152 Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners
• CPC Class Codes: C08F 289/00 Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00

Abstract

A protein-acrylate copolymer contains at least one nitrogen containing acrylic monomer. The nitrogen containing acrylic monomer preferably contains a tertiary or quaternary amine group, and particularly a quaternary amine group. The protein-acrylate copolymer can be produced by reacting hydrolyzed protein with at least one nitrogen containing acrylic monomer, preferably by free-radical polymerization. The protein-acrylate copolymer is suitable for use in personal care or cosmetic products, particularly in hair care products where it can increase volume to hair.

Claims

1. A protein-acrylate copolymer comprising at least one nitrogen containing acrylic monomer;

wherein;

i) the protein of the protein-acrylate copolymer is a hydrolyzed protein of 8 to 50 amino acids; and

ii) the nitrogen containing acrylic monomer comprises at least 60 mol. % of monomers comprising tertiary and/or quarternary amine groups.

3. The copolymer according to claim 1, wherein the nitrogen containing acrylic monomer comprises a tertiary or quaternary amine group.

4. The copolymer according to claim 3, wherein the nitrogen containing acrylic monomer comprises a quaternary amine group.

5. The copolymer according to claim 4, wherein the nitrogen containing acrylic monomer comprises at least 40 mole % of monomers comprising a quaternary amine group.

6. The copolymer according to claim 1, wherein the copolymer has a molecular weight (weight average) in the range from 20,000 to 500,000 Daltons.

7. The copolymer according to claim 1, wherein the molecular weight (weight average) of the protein is in the range from 500 to 10,000 Daltons.

8. The copolymer according to claim 1, wherein the ratio of protein to acrylate is in the range from 20%:

80% to 80%;

20% by weight.

15. A method of treating hair, comprising:

applying a composition comprising the protein-acrylate copolymer of claim 1.

16. A method of increasing the volume of hair comprising applying a composition comprising the protein-acrylate copolymer of claim 1.

17. The copolymer according to claim 1, wherein the protein-acrylate copolymer is a random copolymer, a graft copolymer, or a block copolymer.

18. The copolymer according to claim 17, wherein the protein-acrylate copolymer is a graft copolymer.

2. A protein-acrylate copolymer obtainable by reacting a protein component with an acrylate component comprising at least one nitrogen containing acrylic monomer;

wherein;

i) the protein of the protein-acrylate copolymer is a hydrolyzed protein of 8 to 50 amino acids; and

ii) the nitrogen containing acrylic monomer comprises at least 60 mol. % of monomers comprising tertiary and/or quarternary amine groups.

9. A composition comprising in the range from 0.01 to 20% by weight of a protein-acrylate copolymer, said copolymer comprising at least one nitrogen containing acrylic monomer;

wherein;

i) the protein of the protein-acrylate copolymer is a hydrolyzed protein of 8 to 50 amino acids; and

ii) the nitrogen containing acrylic monomer comprises at least 60 mol. % of monomers comprising tertiary and/or quarternary amine groups.

10. The composition according to claim 9, wherein the composition is a personal care or cosmetic product.

11. The composition according to claim 9, wherein the composition is a hair care or skin care product.

12. The composition according to claim 9, wherein the composition is a hair conditioning product.

19. The composition according to claim 9, wherein the protein-acrylate copolymer is a random copolymer, a graft copolymer, or a block copolymer.

13. A method of producing a protein-acrylate copolymer which comprises reacting protein with at least one nitrogen containing acrylic monomer, and/or oligomer and/or polymer formed from at least one nitrogen containing acrylic monomer;

wherein;

i) the protein of the protein-acrylate copolymer is a hydrolyzed protein of 8 to 50 amino acids; and

ii) the nitrogen containing acrylic monomer comprises at least 60 mol. % of monomers comprising tertiary and/or quarternary amine groups.

14. The method of claim 13, wherein at least one nitrogen containing acrylic monomer is reacted with the protein.

20. The method according to claim 13, wherein the produced protein-acrylate copolymer is a random copolymer, a graft copolymer, or a block copolymer.