Organosilicon compounds
US4912241A · kind A · utility
2Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1988 |
| Grant date | Mar 27, 1990 |
| Priority date | — |
| Expiry date | Jul 29, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/57
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Organosilicon compounds having at least one unit of the general formula ##STR1## in which R represents alkyl, R' is a divalent alkylene, oxyalkylene, alkenylene or oxyalkenylene, Z represents an alkyl, alkoxy or hydroxyl group, a has a value of 0, 1, 2 or 3 and c is 0 to 1, wherein at least one of Z and R' is linked to the multivalent aryl group via an ether linkage, are useful for absorbing UV radiation. Especially if polymeric (with e.g. diorganosiloxane units) they can be incorporated in sunscreen preparations to improve their substantivity to the skin. A process for preparing the compounds is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.