Silane-functionalized ultra-violet screen precursors

Details Silane-functionalized ultra-violet screen precursors Silane-functionalized ultra-violet screen precursors

C - Chemistry, Metallurgy

07

F

400/5314, 260/31

C07F 7/08 (2006.01) B05D 7/02 (2006.01) C07F 7/18 (2006.01) C08J 7/04 (2006.01) C08K 5/54 (2006.01) C09D 4/00 (2006.01)

Patent

CA 1164875

ABSTRACT OF THE DISCLOSURE Silane-functionalized ultraviolet screening agent precursors comprise compounds of the fomula: Image and Image wherein R is Image or Image R1 is C1-C6 alkyl, R is C1-C6 or C2-C6 alkanoyl, R? is hydrogen or C1-C6 alkoyl, X id 0, ; pr 2, y is 1.2, or 3 and x + y = 3. Under ultraviolet radiation the compounds rearrange to the corresponding .alpha. -hydroxybenzophenons which protect substrates, especially transparent plastics, against degradation.

382451

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