Patent ID: 8187575

Claim:
A UV absorber represented by compound of formula (1) wherein R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 and R 8 independently from each other are hydrogen; C 1 -C 18 alkyl; C 2 -C 18 alkenyl; C 5 -C 7 cycloalkyl or C 1 -C 6 alkylene-C 5 -C 7 cycloalkyl; R 9 is C 1 -C 18 alkyl; C 2 -C 18 alkenyl; C 5 -C 7 cycloalkyl; C 1 -C 6 alkylene-C 5 -C 7 cycloalkyl or C 6 -C 10 aryl; A is —S—; or —NR 10 —, wherein R 10 is hydrogen, C 1 -C 18 alkyl; C 2 -C 18 alkenyl; C 5 -C 7 cycloalkyl; C 1 -C 6 alkylene-C 5 -C 7 cycloalkyl or C 6 -C 10 aryl; and X is COOR 11 ; CONR 12 R 13 ; SO 3 R 14 or SO 2 NR 15 R 16 , wherein R 11 , R 12 , R 13 , R 14 , R 15 and R 16 are independently from each other hydrogen, C 1 -C 18 alkyl; C 2 -C 18 alkenyl; C 5 -C 7 cycloalkyl; C 1 -C 6 alkylene-C 5 -C 7 cycloalkyl or C 6 -C 10 aryl.