Silane-functionalized ultraviolet screen precursors

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

1982-01-28

1983-02-08

Bleutge, John C.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

525100, 525403, 525477, 528 32, 528 34, 528 40, 528 43, C08F 250

Patent

active

043728359

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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