Patent ID: 6911521

Claim:
A polyhydroxyalkanoate comprising a unit represented by the following chemical formula (1): wherein R1 is a substituent of an aromatic ring selected from the group consisting of H, CH 3 , C 2 H 5 , CH 3 CH 2 CH 2 , (CH 3 ) 2 CH, (CH 3 ) 3 C, a halogen atom, CN, NO 2 , COOR′, and SO 2 R″, wherein R′ is selected from the group consisting of H, Na, K, CH 3 , and C 2 H 5 , and R″ is selected from the group consisting of OH, a halogen atom, ONa, OK, OCH 3 , and OC 2 H 5 ; and x represents an integer of 1 to 8 being the same or different each other in the polyhydroxyalkanoate, with the proviso that the polyhydroxyalkanoate does not consist of two units represented by the following chemical formulae (2) and (3):