| 摘要 |
<p>Block copolymers (B1) comprising polyester and polyether units, where (B1) comprises diblock copolymer of A-B type or triblock copolymer of A-B-A type where A represents polyester block and B represents polyether block, is new. An independent claim is included for an implant comprising the block copolymer (B1).</p> |
