POLYMER, IN VIVO ABSORPTIVE MATERIAL AND FILM FOR PREVENTING ADHESION OF TISSUE

摘要

PROBLEM TO BE SOLVED: To provide in vivo absorptive A1 BA2 polymer having good physical properties in a dry state and capable of disappearing within a definite period in the body. SOLUTION: The A1 BA2 polymer having 10,000 to 600,000 number-average molecular weight, in which a segment B comprises a polyethylene glycol having 8,000 to 300,000 number-average molecular weight and a segment A1 is bound to one end of the segment B and a segment A2 is bound to the other end of the segment B is provided. These segments A1 and A2 contain a modified amino acid group or unmodified amino acid group.