Cosmetic and/or dermatological composition comprising a dispersion of a polymer system, and use of this system as a tensioning agent
US6413526B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 1999 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Jul 7, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/926
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to an anti-wrinkle composition containing a dispersion of a polymer system comprising at least one polymer of natural origin, and to the use of this polymer system as a tensioning agent in a cosmetic or dermatological composition.The polymer used must characteristically have a molecular weight of greater than 670,000 daltons and the polymer system obtained must be capable of forming a steam-permeable film, it must have a Young's modulus ranging from 108 to 9×109 N/m2 and it must produce, at a concentration of 7%, a greater than 1.5% retraction of isolated stratum corneum at 30° C. and at a relative humidity of 40%.The composition obtained is used in particular for the immediate treatment of wrinkles and fine lines on the skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.