Patent ID: 8889821

Claim:
A polyester amide compound, comprising: a polycarboxylic acid unit in an amount of from 25 to 50 mol %, the polycarboxylic acid unit comprising an aromatic dicarboxylic acid unit of formula (I): in an amount of 70 mol % or more; a polyhydric alcohol unit in an amount of from 25 to 50 mol %, the polyhydric alcohol unit comprising an aliphatic diol unit of formula (II): in an amount of 70 mol % or more; and a structural unit of formula (III): in an amount of from 0.1 to 50 mol % wherein Ar is an arylene group; X is a C2 to C20 alkylene group; and R is a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group.