Patent ID: 8585938

Claim:
A UV absorber of the formula wherein is R 1 =C 1 -C 12 alkylene, (CH 2 CH 2 O) n , (CH 2 CH(CH 3 )O) n , or CH 2 CH 2 CH 2 (Si(CH 3 ) 2 O) b Si(CH 3 ) 2 CH 2 CH 2 CH 2 ; X is nothing if R 1 is (CH 2 CH 2 O) n , (CH 2 CH(CH 3 )O) n , or R 2 is Si(CH 3 ) 2 , otherwise X is O, NR, or S; R=H, CH 2 Si(CH 3 ) 3 , C 1 -C 6 alkyl, or phenyl; R 2 =nothing, C(═O), C(═O)C j H 2j , C 1 -C 6 alkylene, phenyl, C 1 -C 6 alkylphenyl, or Si(CH 3 ) 2 ; R 3 =H or CH 3 ; R 4 =H, C 1 -C 6 alkyl, or phenyl; R 5 =C 4 -C 12 t-alkyl; b=1-9; n=1-10; and j=1-6.