Patent ID: 8865860

Claim:
A polymer including a moiety A represented by the Chemical Formula 1: wherein, in Chemical Formula 1, X 1 is a functional group including at least two ester residual groups and a substituted or unsubstituted divalent aliphatic group linking the ester residual groups, and X 2 is one of hydrogen, a halogen atom, a substituted or unsubstituted C 1 to C 20 aliphatic group, a hydroxy group, a substituted or unsubstituted C 1 to C 20 alkoxy group, a substituted or unsubstituted C 1 to C 30 ketone group, a substituted or unsubstituted C 1 to C 20 ester group, a thiol group, —SR 100 (wherein R 100 is one of a substituted or unsubstituted C 1 to C 20 aliphatic group, a substituted or unsubstituted C 2 to C 30 aromatic group, and a substituted or unsubstituted C 2 to C 30 heterocycloalkyl group), and a combination thereof.