Patent ID: 8653284

Claim:
A compound having the structural formula: wherein: R 1 and R 3 are independently selected from the group consisting of H, C 1 -C 20 alkyls, C 1 -C 20 cycloalkyls, C 1 -C 20 alkoxy groups, C 7 -C 20 phenylalkyls, and phenyl groups; R 2 and R 4 are each hydrogen; R 5 , R 6 , R 7 and R 8 are independently selected from the group consisting of H C 1 -C 20 alkyls, and C 1 -C 20 alkoxy groups; A is a C 2 -C 20 alkylene oxide group or a divalent oligomeric oxyalkylene radical; Z is a C 2 -C 20 alkyl or a divalent ester radical; and G is an end group selected from the group consisting of H, C 1 -C 10 alkyls, alkyl carbonyls and aryl carbonyls; and wherein (i) A is a divalent oligomeric oxyalkylene radical, (ii) Z is a divalent ester radical, or (iii) A is a divalent oligomeric oxyalkylene radical and Z is a divalent ester radical.