Cosmetic use of a crosslinked and at least 90% neutralized poly(2-acrylamido-2-methylpropanesulphonic acid) and topical compositions containing it
US6120780A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Oct 27, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present application relates to the use, as a cosmetic product, of crosslinked and at least 90% neutralized poly(2-acrylamido-2-methylpropanesulphonic acid) polymers. They generally comprise, distributed randomly: PA0 a) from 90 to 99.9% by weight of units of general formula (1) below: ##STR1## in which X.sup.+ denotes a cation or a mixture of cations, not more than 10 mol % of the cations X.sup.+ being able to be protons H.sup.+ ; PA0 b) from 0.01 to 10% by weight of crosslinking units derived from at least one monomer having at least two olefinic double bonds; the weight proportions being defined relative to the total weight of the polymer. The present application relates in particular to their use as thickener and/or gelling agent in cosmetic and/or dermatological compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.