Patent ID: 7795373

Claim:
A polymer of Formula or structure (I) wherein R 1 and R 2 are independently alkyl with 1 to about 30 carbon atoms, aryl with about 6 to about 48 carbon atoms, substituted alkyl, substituted aryl, alkylaryl, a heteroatom containing group, or a halogen; Ar and Ar′ are independently an aromatic moiety; x and y are each independently from zero to about 12; a and b are each independently from 1 to about 6; c and g are each independently from zero to about 10; d and f are each independently from zero to about 4, and the sum of d and f is from 1 to about 4; e is from about 1 to about 10; and n is from 2 to about 5,000.