Patent ID: 7589156

Claim:
A polyhydroxyalkanoate comprising at least a unit represented by a chemical formula (1) within a molecule: wherein R represents —A 1 —SO 2 R 1 ; R 1 represents OH, a halogen atom, ONa, OK or OR 1a ; R 1a and A 1 each independently represents a group having a substituted or unsubstituted aliphatic hydrocarbon structure, a substituted or unsubstituted aromatic ring structure or a substituted or unsubstituted heterocyclic structure; m represents an integer selected from 1-8; Z represents a linear or branched alkyl group, an aryl group or an aralkyl group substituted with an aryl group; and in case plural units are present, R, R 1 , R 1a , A 1 , m and Z are selected independently for each unit.