Organosilicon compounds their preparation and use

Details Organosilicon compounds their preparation and use Organosilicon compounds their preparation and use

1989-11-06

1991-02-12

Shaver, Paul F.

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

Aromatic acid or derivative containing

424 59, 556438, 556439, 556441, A61K 744, A61K 742

Patent

active

049922610

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 or 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.

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