Patent ID: 8513377

Claim:
A polymer, comprising: a unit derived from a monomer according to structure (I): wherein each instance of Q is O or S; each of R 1a , R 1b , R 2a , R 2b , R 3 , and R 4 independently is hydrogen; C 1 -C 20 alkyl, C 1 -C 20 haloalkyl, aryl, C 1 -C 20 alkoxy, C 1 -C 20 haloalkoxy, aryloxy, —C 1 -C 10 alkyl-O—C 1 -C 10 alkyl, —C 1 -C 10 alkyl-O-aryl, —C 1 -C 10 alkyl-aryl; or hydroxyl; with the proviso that at least one of R 1a , R 1b , R 2a , R 2b , R 3 , and R 4 is not hydrogen, and when R 1a , R 1b , R 2a , and R 2b are all hydrogen, then at least one of R 3 and R 4 is other than hydrogen, C 1 -C 20 alkyl, or —C 1 -C 10 alkyl-aryl; wherein the C 1 -C 20 alkyl, C 1 -C 20 haloalkyl, aryl, C 1 -C 20 alkoxy, C 1 -C 20 haloalkoxy, aryloxy, —C 1 -C 10 alkyl-O—C 1 -C 10 alkyl, —C 1 -C 10 alkyl-O-aryl, —C 1 -C 10 alkyl-aryl group each may be optionally substituted with one or more of C 1 -C 20 alkyl; aryl; halogen; hydroxyl; —N—(R 7 ) 2 wherein each R 7 is independently hydrogen or C 1 -C 6 alkyl; cyano; nitro; —COOH; —S(═O)C 0 -C 10 alkyl; or —S(═O) 2 C 0 -C 10 alkyl.