Claims
- 1. Cosmetic or personal care composition comprsising a thermoplastic elastomer which is a block copolymer comprising a core polymer of (2-methoxyethyl) acrylate and two or more flanking polymers comprising N,N-dimethyl acrylamide, each flanking polymer being covalently bound to an end of the core polymer, wherein the copolymer is soluble at a level of at least 1% by weight in water at 25° C., and a cosmetically acceptable diluent or carrier.
- 2. Composition as claimed in claim 1, wherein the core polymer has a Tg of from −100° C. to 50° C.
- 3. Composition as claimed is claim 1, wherein the flanking polymers have a Tg of from 30° C. to 150° C.
- 4. Composition as claimed is claim 1, wherein the block copolymer is linear or star-shaped.
- 5. Composition as claimed is claim 1, wherein the block copolymer is a linear ABA block copolymer.
- 6. Composition as claimed is claim 1, wherein the copolymer is a poly(N,N-dimethyl acrylamide)-poly((2-methoxyethyl) acrylate)-poly(N,N-dimethyl acrylamide) block copolymer.
- 7. Composition as claimed is claim 1, which comprises from 0.1 to 10% by weight of the block copolymer.
- 8. Composition as claimed is claim 1, wherein the core polymer has a weight average molecular weight of from 20 kDa to 500 kDa.
- 9. Composition as claimed is claim 1, wherein the flanking polymers have a weight average molecular weight of from 200 Da to 50 kDa.
- 10. Composition as claimed is claim 1, wherein the molar ration of the core polymer to the flanking polymers is from 1:10 to 10:1.
- 11. Composition as claimed is claim 1, wherein the block copolymer has a bond strength of at least 30 g at 25° C. and 30% relative humidity.
- 12. Composition as claimed is claim 1, wherein the polymer has a viscosity of less than 15 cp as determined for 5 wt % polymer in 50 vol % aqueous ethanol solution at 25° C. using capillary viscometry and assuming a viscosity for deionised water of 1 mPas.
- 13. Composition as claimed is claim 1, wherein the block copolymer has an elastic modulus of less than 0.45 Gpa.
- 14. Composition as claimed is claim 1, which further comprises a fragrance or perfume.
- 15. Composition as claimed is claim 1, which is a hairspray, mousse or gel for styling hair.
- 16. Composition as claimed in claim 15, further comprising an additional hair styling polymer.
- 17. Composition as claimed is claim 15, further comprising from 0.01% to 7.5% by weight of a surfactant.
- 18. Composition as claimed is claim 15, further comprising up to 30% by weight of a propellant.
- 19. Composition as claimed in claim 15, which is a hair styling cream or gel including from 0.01% to 10% by weight of a structurant or thickener.
- 20. A cosmetic method of treating hair which comprises applying to the hair a composition according to claim 1.
- 21. Method as claimed in claim 20, wherein the hair is human hair.
Priority Claims (3)
Number |
Date |
Country |
Kind |
0024182 |
Oct 2000 |
GB |
|
0028604 |
Nov 2000 |
GB |
|
0028605 |
Nov 2000 |
GB |
|
Parent Case Info
This application is a CIP of U.S. application Ser. No. 09,678,085 filed Oct. 3, 2000.
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Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/678085 |
Oct 2000 |
US |
Child |
09/969924 |
|
US |