Silane-functionalized ultraviolet screen precursors

Details Silane-functionalized ultraviolet screen precursors Silane-functionalized ultraviolet screen precursors

1980-08-01

1982-05-04

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

556428, 556440, 20415913, C07F 718

Patent

active

043283462

ABSTRACT:
Silane-functionalized ultraviolet screening agent precursors comprise compounds of the formula: ##STR1## wherein R is ##STR2## R.sup.1 is C.sub.1 -C.sub.6 alkyl, R.sup.2 is C.sub.1 -C.sub.6 alkyl or C.sub.2 -C.sub.6 alkanoyl, R.sup.3 is hydrogen or C.sub.1 -C.sub.6 alkoxyl, X is 0,1 or 2, y is 1,2, or 3 and x+y=3. Under ultraviolet radiation the compounds rearrange to the corresponding .alpha.-hydroxybenzophenones which protect substrates, especially transparent plastics, against degradation.

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