USE OF AMPHIPHILIC COPOLYMERS TO STABILIZE DISPERSIONS OF INSOLUBLE ORGANIC COMPOUNDS FOR SCREENING OUT UV RADIATION, DISPERSIONS STABILIZED WITH THESE COPOLYMERS AND COSMETIC COMPOSITIONS CONTAINING THEM
US6818206B2 · kind B2 · utility
2Cited by
4References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Oct 10, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/90
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to the use of at least one amphiphilic copolymer comprising at least one hydrophilic block and at least one hydrophobic block to stabilize dispersions of insoluble organic compounds comprising at least one group that absorbs UV radiation, which is in the form of particles with a mean size of between 10 nm and 5 &mgr;m, and also to dispersions stabilized with these amphiphilic copolymers and to cosmetic compositions for topical application, in particular antisun compositions, containing them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.