Claims
- 1. Water-soluble amphiphilic cationic associative polyurethanes of formula (I):
- 2. The polyurethane according to claim 1, wherein the only hydrophobic groups are the R and R′ groups.
- 3. The polyurethane according to claim 1, wherein R and R′ independently represent a hydrophobic group; X and X′ are L″; n and p have values between 1 and 1000; and L, L′, L″, P, P′, Y and m are the same as claim 1.
- 4. The polyurethane according to claim 1, wherein R and R′ independently represent a hydrophobic group; X and X′ are L″; n and p have the value 0; and L, L′, L″, Y and m are the same as claim 1.
- 5. The polyurethane according to claim 1, wherein R and R′ independently represent a hydrophobic group; X and X′ comprise a quartenary amine; n and p have the value 0; and L, L′, Y and m are the same as claim 1.
- 6. The polyurethane according to claim 1, which exhibits a number-average molecular mass between 400 and 500,000.
- 7. The polyurethane according to claim 6, which has a number-average molecular mass ranging from 1,000 to 400,000.
- 8. The polyurethane according to claim 7, which has a number-average molecular mass ranging from 1,000 to 300,000.
- 9. The polyurethane according to claim 1, wherein R and R′ represent a radical or a polymer with a saturated or unsaturated and linear or branched hydrocarbonaceous chain, in which chain one or more of the carbon atoms is optionally replaced by a heteroatom selected from the group consisting of S, N, O and P, or a radical comprising a silicone or perfluorinated chain.
- 10. The polyurethane according to claim 1, wherein X and X′ represent one of the formulae:
- 11. The polyurethane according to claim 1, wherein L, L′, and L″ are identical or different, represent the formula:
- 12. The polyurethane according to claim 1, wherein P and P′ are identical or different, and are selected from the following formulae:
- 13. The polyurethane according to claim 1, wherein Y represents a glycol selected from the group consisting of ethylene glycol, diethylene glycol and propylene glycol or a polymer selected from the group consisting of polyethers, sulphonated polyesters and sulphonated polyamides.
- 14. A method for using a polyurethane as defined in claim 1 as a thickener or gelling agent comprising adding said polyurethane to a composition which is to be used for topical application as a cosmetic.
- 15. A cosmetic composition thickened or gellified with at least one water-soluble polyurethane according to claim 1.
- 16. The polyurethane according to claim 1, wherein r is an integer between 1 and 50.
- 17. The polyurethane according to claim 16, wherein r is an integer between 1 and 25.
Priority Claims (1)
Number |
Date |
Country |
Kind |
0009609 |
Jul 2000 |
FR |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This is a divisional of U.S. patent application Ser. No. 09/904,516, filed Jul. 16, 2001, which claims priority to French Patent Appl. No. 0009609, filed Jul. 21, 2000, the contents of both applications are herein incorporated in their entirety by reference.
Divisions (1)
|
Number |
Date |
Country |
Parent |
09904516 |
Jul 2001 |
US |
Child |
10751514 |
Jan 2004 |
US |