Patent ID: 7705108

Claim:
A compound having formula 7 or 8 wherein n is an integer greater than one; R 1 and R 2 are, independently, hydrogen or an alkyl group with the proviso that at least one of R 1 and R 2 is an alkyl group, and at least one Q is a halogen, an acyl halide, an ester, an aldehyde, a ketone, a hydroxyl group, a thiol group, or an amino group, and the other Q is, independently, hydrogen, a substituted or unsubstituted alkyl group, an acyl halide, an ester, an aldehyde, a ketone, a hydroxyl group, a thiol group or alkyl substituted thiol group, an alkoxy group, an acrylate group, an amino group, a vinyl ether, or a halogen.