Organosilicon compounds and preparation and use thereof
US4554369A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 1984 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Aug 16, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/38
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Organosilicon compounds which are silanes or siloxanes characterized by the presence of silicon-bonded groups represented by the general formula ##STR1## in which R' is a divalent hydrocarbon group which may contain ether oxygen, R" represents --CHBCH.sub.2 -- or --C.sub.6 H.sub.9 B-- in which B is OH or the group ##STR2## a and n are each 0 or 1 and Y is --OH, lower alkoxy or --NX.sub.2 wherein X represents hydrogen or lower alkyl. The compounds are prepared by the reaction of an organosilicon compound having an organic substituent which contains an epoxy group, and the appropriate acid or acid chloride. They absorb ultra violet radiation and are useful as cosmetic and other sunscreen agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.