| abstract |
A polyhydroxyalkanoate copolymer comprises one kind of unit ofn n—[OCH((CH 2 ) x —SOC 6 H 5 R)CH 2 CO]— (n=1-7) (1)n n(wherein R is any one of H, halogen, CN, NO 2 , COOR′, SO 2 R″ (R′ is any one of H, Na, K, CH 3 and C 2 H 5 ; R″ is any one of OH, ONa, OK, halogen, OCH 3 and OC 2 H 5 ), CH 3 , C 2 H 5 , C 3 H 7 , (CH 3 ) 2 —CH and (CH 3 ) 3 —C) andn n—[OCH((CH 2 ) x —SO 2 C 6 H 5 R)CH 2 CO]— (n=1-7) (2)n n(wherein R is any one of H, halogen, CN, NO 2 , COO R′, SO 2 R″ (R′ is any one of H, Na, K, CH 3 and C 2 H 5 ; R″ is any one of OH, ONa, OK, halogen, OCH 3 and OC 2 H 5 ), CH 3 , C 2 H 5 , C 3 H 7 , (CH 3 ) 2 —CH and (CH 3 ) 3 —C) and at least one unit of chemical formulae (3) to (6):n n—[OCH((CH 2 ) m —Rz)CH 2 CO]— (n=1-8) (3)n n(wherein Rz comprises a residue having either a phenyl structure or a thienyl structure),n n—[OCH((CH 2 ) k —C 6 H 11 Ra)CH 2 CO]— (n=1-8) (4)n n(wherein R a is any one of H, CN, NO 2 , halogen, CH 3 , C 2 H 5 , C 3 H 7 , CF 3 , C 2 F 5 and C 3 F 7 )n n—[OCH((CH 2 ) n —CH═CH 2 )CH 2 CO]— (n=1-8), and (5)n n—[OCH((CH 2 ) n —COORb)CH 2 CO]— (n=1-8) (6)n n(wherein R b is any one of H, Na and K). |