Patent ID: 8653223

Claim:
A compound comprising structure I wherein R 1 is hydrogen, a metal cation, an organic cation, a linear, branched, or cyclic alkyl, a linear, branched, or cyclic alkenyl, alkynyl, aryl, alkaryl, or an oligomeric or polymeric moiety, wherein R 1 is the same or different for each occurrence; R 2 is a covalent bond or a linear or branched alkyl group wherein R 2 is the same or different for each occurrence; R 3 is the same or different for each occurrence and is a linear, branched, or cyclic alkyl group, or at least one R 3 is wherein n is 0, 1, or 2, R′ is a linear or branched alkyl having between 1 and 6 carbon atoms, and X is O or NR, wherein R is hydrogen or a linear or branched alkyl group having six or less carbon atoms; R 4 is a covalent bond, methylene, or alkylmethylene, wherein a covalent bond indicates a 5-membered ring and a methylene or alkylmethylene indicates a 6-membered ring, wherein R 4 is the same or different for each occurrence; R 5 is a covalent bond, methylene, ethylene, hydroxymethylene, —CH 2 —O—CH 2 —, or a polymeric moiety, wherein R 5 is the same or different for each occurrence; R 6 and R 7 are independently linear, branched, or cyclic alkyl groups; R 8 and R 9 are independently hydrogen, a linear, branched, or cyclic alkyl, a linear, branched, or cyclic alkenyl, alkynyl, aryl, alkaryl, or a polymeric moiety; Z is O or NR, wherein R is hydrogen or a linear or branched alkyl group having six or less carbon atoms wherein Z is the same or different for each occurrence; γ is an integer of at least 1; and the structure I comprises at least one α unit and at least one β unit.