PROBLEM TO BE SOLVED: To provide a polymer having in vivo degradability and biocompatibility, being capable of ensuring visibility inside a living body and storage stability outside a living body, and being suitable for, in particular, surgical suture and the like, and to provide a method of producing the same.SOLUTION: In a method for obtaining a polymer with a weight average molecular weight of 3,000-20,000, the polymer is obtained by addition reaction of a phthalocyanine compound, which has a metal atom selected from the group consisting of a silicon atom, a germanium atom, and an aluminum atom as the central metal, to the terminal of a polymer selected from the group consisting of a polylactic acid, a polyglycolic acid, and a copolymer of them. A polymer obtained by the method is also provided.COPYRIGHT: (C)2014,JPO&INPIT【課題】生体内での分解性、生体適合性を有し、かつ生体内部での視認性と生体外部での保存安定性を確保することができ、特に手術用縫合糸用途などに好適な重合体及び該重合体の製造方法を提供すること。【解決手段】ポリ乳酸、ポリグリコール酸、及びこれらの共重合体からなる群より選ばれたポリマーの末端に、ケイ素原子、ゲルマニウム原子、アルミニウム原子からなる群より選ばれた金属原子を中心金属として有するフタロシアニン系化合物を付加反応して、重量平均分子量が3,000~20,000の重合体を得る方法、及び該方法で得られた重合体。【選択図】なし
