Photoactive additive with functionalized benzophenone

A photoactive additive formed from the reaction of:

• (i) a benzophenone having the structure of Formula (1), (2), or (3):
• wherein R and R′ are independently alkyl, aryl, alkenyl, halogen, sulfonate, phosphate, phosphonate, nitrile, thiophene, or pyrrole;
• p is an integer from 0 to 5;
• q and r are independently an integer from 0 to 4;
• s is an integer from 0 to 3;
• L is oxyalkylene;
• and Y is hydroxyl, alkoxy, aryloxy, or halogen;
• or an anhydride thereof;
• and
• (ii) a first linker moiety comprising a plurality of functional groups and having the structure of one of the following Formulas (B)-(I):
• wherein Ra and Rb each represent a halogen atom or a monovalent hydrocarbon group and may be the same or different;
• p and q are each independently integers of 0 to 4;
• and A represents one of the groups of formula (B-1):
• wherein Rc and Rd each independently represent a hydrogen atom or a monovalent linear or cyclic hydrocarbon group and Re is a divalent hydrocarbon group;
• wherein each Rk is independently a C1-10 hydrocarbon group, and n is 0 to 4;
• wherein each Ar is independently aryl;
• each R is independently alkyl, alkoxy, alkenyl, alkenyloxy, aryl, aryloxy, arylalkyl, or alkylaryl;
• each R6 is independently a divalent C1-C30 organic group such as a C1-C30 alkyl, C1-C30 aryl, or C1-C30 alkylaryl;
• and D and E are an average value of 2 to about 1000;
• wherein each X is independently hydrogen, halogen, or alkyl;
• and i is an integer from 1 to 20;
• wherein R13 and R15 are each independently a halogen or a C1-C6 alkyl group, R14 is a C1-C6 alkyl, phenyl, or phenyl substituted with up to five halogens or C1-C6 alkyl groups, and c is 0 to 4;
• wherein R1 represents a halogen atom, an alkyl group having 1 to 6 carbon atoms, an alkoxy group having 1 to 6 carbon atoms, an aryl group having 6 to 12 carbon atoms, an aryl-substituted alkenyl group having 7 to 13 carbon atoms, or a fluoroalkyl group having 1 to 6 carbon atoms;
• R2 represents a halogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, an aryl-substituted alkenyl group having 7 to 13 carbon atoms, or a fluoroalkyl group having 1 to 12 carbon atoms;
• m represents an integer of 0 to 4;
• and n represents an integer of 0 to 14;
• wherein R1 to R4 are each independently a hydrogen atom, a hydrocarbon group with 1 to 9 carbon atoms which may contain an aromatic group, or a halogen atom;
• or
• wherein R1 is an isosorbide unit and R2-R9 are each independently a hydrogen, a halogen, a C1-C6 alkyl, a methoxy, an ethoxy, or an alkyl ester;
• and
• (iii) a difunctional chain extender having the structure of one of the following Formulas (21)-(24):
• where Y is hydroxyl, halogen, alkoxy, or aryloxy;
• and where n is 1 to 20.