Patent ID: 7381762

Claim:
A compound represented by the formula: wherein: R 1 is selected from the group consisting of: H, F, Cl, Br, I, alkyl, alkoxy, carbonyl-containing groups represented as —C(O)-A, and SO 2 -containing radicals represented as SO 2 -A; wherein A is selected from OH, alkyl, alkoxy, and organic amine groups; R 2 is selected from the group consisting of: H, C 1 -C 10 alkyls, and C 7 -C 20 phenylalkyls; R 3 is selected from the group consisting of: H, carbon containing chain radicals, and carbon/oxygen containing chain radicals; R 4 is selected from the group consisting of: divalent C 2 -C 20 alkyl radicals, divalent C 4 -C 20 alky radicals interrupted by oxygen, sulfur or nitrogen, and divalent oligomeric radicals; R 7 and R 8 each are independently selected from the group consisting of: H and C 1 -C 10 alkyl groups; n is an integer between 1 and 10; and m is a positive integer or fraction thereof between 1 and 20.