Patent ID: 7799434

Claim:
A polymer having the formula: wherein x is such that the polymer has a molecular weight of about 1,000 to 100,000; R 1 , R 2 , R 3 , and R 4 are independently hydrogen, C 1 -C 10 alkyl, C 1 -C 10 fluoro-substituted alkyl, cyclopentyl, cyclohexyl, benzyl, toluoyl, xylylor phenyl; R 5 is represented by a formula and R 6 is represented by a formula; wherein R 7 , R 9 , R 11 , and R 13 are independently linear or branched alkylene; R 8 , R 10 , R 12 , and R 14 are independently hydrogen or linear or branched C 1 -C 10 alkyl; b, e, z, and u are independently an integer from 0 to 6; a, d, y, and t are independently an integer from 1 to 300; and m and n are independently 0 or 1; R 15 and R 16 are independently hydrogen, C 1 -C 10 alkyl, cyclopentyl, cyclohexyl, benzyl, toluoyl, xylyl or phenyl; and L 1 and L 2 are linking groups.