Photoprotective/cosmetic compositions comprising benzotriazole-substituted polyorganosiloxanes/polyorganosilanes
US5610257A · kind A · utility
18Cited by
2References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1995 |
| Grant date | Mar 11, 1997 |
| Priority date | — |
| Expiry date | Nov 8, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/57
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Topically applicable sunscreen/cosmetic compositions well suited for enhanced photoprotection of human skin and/or hair against the damaging effects of UV-A and UV-B irradiation, particularly solar radiation, comprise a photoprotecting effective amount of a novel benzotriazole-substituted polyorganosiloxane/polyorganosilane having one of the formulae (1) to (3): ##STR1## EQU A--Si(R').sub.3 (3) wherein A is a monovalent benzotriazole radical which comprises an acrylate or acrylamide functional group, which is bonded directly to a silicon atom, and which has the formula (4): ##STR2##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.