Sunscreen composite particles
US7892524B2 · kind B2 · utility
5Cited by
26References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2008 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Dec 13, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/413
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Composite particles for providing UV photo protection in cosmetic compositions are reported which include an organic sunscreen agent dispersed within a condensation polymerized resin having carboxylic acid groups and a dielectric constant ranging from 6.5 to 18.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.