发明授权
US5516883A Biodegradable optically active copolymer and process for producing the
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可生物降解的光学活性共聚物及其制备方法
- 专利标题： Biodegradable optically active copolymer and process for producing the same
- 专利标题（中）： 可生物降解的光学活性共聚物及其制备方法
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申请号： US164697申请日： 1993-12-09
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公开(公告)号： US5516883A公开(公告)日： 1996-05-14
- 发明人: Yoji Hori , Akio Yamaguchi
- 申请人： Yoji Hori , Akio Yamaguchi
- 申请人地址： JPX Tokyo
- 专利权人： Takasago International Corporation
- 当前专利权人： Takasago International Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX4-353170 19921211; JPX5-090548 19930326; JPX5-301248 19931105
- 主分类号： C08G63/08
- IPC分类号： C08G63/08 ; C08G63/664 ; C08G63/78 ; C08G63/82 ; C08G63/85 ; C08L101/16
摘要：
A biodegradable, optically active copolymer is disclosed. The copolymer is represented by general formula (I): ##STR1## wherein R.sup.1 represents a group selected from the group consisting of methyldimethylene, 1,2-dimethyldimethylene, 1,1-dimethyldimethylene, methyltrimethylene, tetramethylene, methyltetramethylene, pentamethylene, 1,4-dimethyl-2-oxo-3-oxytetramethylene, 2-oxo-3-oxytetramethylene, and 2-methyl-3-oxypentamethylene, and m and n each represents a natural number of from 10 to 15,000. According to the present invention, useful polymers which are a new type of functional materials characterized as having optical activity, biodegradability (enzymatic degradability), and hydrolyzability can be easily produced in an industrially advantageous manner by the ring-opening copolymerization of optically active .beta.-butyrolactone with various lactones.
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