Patent ID: 7682522

Claim:
A compound represented by formula (1): wherein R represents hydrogen or methyl; A represents alkylene having from 1 to 12 carbon atoms, wherein in the alkylene, arbitrary —CH 2 — may be replaced by —O—, —S—, —CH═CH—, —CO—, —COO— or —OCO—; X and Y each independently represent an aromatic ring or a cyclohexane ring, wherein in the rings, arbitrary hydrogen may be replaced by alkyl having from 1 to 3 carbon atoms; Z independently represents a single bond, —O—, —S—, —COO—, —OCO—, —CON(R 1 )— or —N(R 1 )CO—, wherein R 1 represents hydrogen or methyl; and m represents an integer of from 0 to 3.