Patent ID: 7803359

Claim:
A UV absorber of the formula wherein R 1 and R 3 independently=H; C 1 -C 12 alkyl, optionally substituted; C 1 -C 12 cycloalkyl, optionally substituted; phenyl, optionally substituted; or naphthyl; or R 1 and R 3 are linked through the optional (as designated by the dashed bonds) linking group R 2 where R 2 is a C 1 -C 6 alkylene, optionally substituted; or R 1 , R 2 , and R 3 taken together form an optionally substituted 1,2-phenyl, 1,2-naphthyl, or 2,3-naphthyl, wherein, in each case, the optional substituents are independently C 1 -C 6 alkyl, C 1 -C 6 alkoxy, OH, —Si(CH 3 ) 3 , halogen, —(CH 2 CH 2 O) n —R 10 , or —(CH 2 CH(CH 3 )O) n R 10 ; R 10 =H, —Si(CH 3 ) 3 , or C 1 -C 6 alkyl; R 8 =H or C 1 -C 12 alkyl; and R 9 =H; C 1 -C 12 alkyl, optionally substituted with OH; or R 4 =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) m Si(CH 3 ) 2 CH 2 CH 2 CH 2 ; X=nothing, O, NR 7 , or S, provided that if R 4 is (CH 2 CH 2 O) n , or (CH 2 CH(CH 3 )O) n then X is nothing; R 5 =nothing, C(═O), C(═O)C j H 2j , C 1 -C 6 alkylene, phenyl, or C 1 -C 6 alkylphenyl; C(═O)O, C(═O)OC j H 2j , C(═O)NR 7 , C(═O)NR 7 C j H 2j , C(═S)O, C(═S)OC j H 2j , C(═S)NR 7 , C(═S)NR 7 C j H 2j , n=2-10; j=1-6; m=1-9; R 6 =H or methyl; and R 7 =H, C 1 -C 6 alkyl, or phenyl.