Patent ID: 8324256

Claim:
A compound of formula I Y-L 2 -Z-L 1 -X I wherein Z is the ultraviolet absorber and is a divalent radical of formula (1a) or (1c) in which R 3a , R 3b , R 3c , R 2z , R 3z , R 4z , and R 1z , independent of another, are hydrogen, halogen, a C 1 -C 12 linear or branched alkyl group, a C 1 -C 12 linear or branched alkoxy group, or a C 6 -C 24 aryl or substituted aryl group; X is the polymerization initiator and is a monovalent radical comprising a polymerization initiator moiety selected from the group consisting of phosphine oxide a peroxide group, an azide group, an α-hydroxyketone, and an α-aminoketone; Y is the ethenically unsaturated group and is a monovalent radical of formula (2) in which Z 1 and Z 2 independent of each other are a covalent bond, a linear or branched C 1 -C 12 alkylene divalent radical, a linear or branched C 1 -C 12 alkylene divalent radical having one or more hydroxyl groups, a radical of —(CH 2 CH 2 O) d —CH 2 CH 2 — in which d is an integer of 1 to 10, unsubstituted phenylene divalent radical, C 1 -C 4 alkyl or C 1 -C 4 alkoxy substituted phenylene divalent radical, C 7 -C 12 aralkylene divalent radical, in which R′ is H or C 1 -C 8 alkyl; A 5 is a covalent bond, in which R′ is H or C 1 -C 8 alkyl; q 1 and q 2 independent of each other are an integer of 0 or 1; R 14 is hydrogen, C 1 -C 4 alkyl or halogen; R 15 and R 16 independent of each other are hydrogen, C 1 -C 4 alkyl, phenyl, carboxy, halogen, or a radical of in which X 3 is as defined above or —S— and R 17 is C 1 -C 12 alkyl, C 1 -C 12 hydroxyalkyl, C 1 -C 12 aminoalkyl, alkylaminoalkyl having up to 12 carbon atoms, or dialkylaminoalkyl having up to 12 carbon atoms; and L 1 and L 2 independently of each other are a covalent bond or a linker.