Photo stable organic sunscreen compounds with antioxidant properties and compositions obtained therefrom
US6602515B2 · kind B2 · utility
8Cited by
44References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 2001 |
| Grant date | Aug 5, 2003 |
| Priority date | — |
| Expiry date | Oct 26, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C255/41
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A compound of formula I whereinA is a moiety which provides UV absorbing activity to the compound of formula I that comprises 1 divalent group or 2 monovalent groups, with at least one group having carbonyl (C═O) functionality, and each R is independently linear or branched C1-C8 alkyl. Sunscreen formulations which contain these compounds and methods using these compounds to prepare formulations are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.