- 专利标题： Aliphatic polyester and preparation process thereof
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申请号： US219344申请日： 1994-03-29
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公开(公告)号： US5401796A公开(公告)日： 1995-03-28
- 发明人: Takeshi Kashima , Taiji Kameoka , Chojiro Higuchi , Masanobu Ajioka , Akihiro Yamaguchi
- 申请人： Takeshi Kashima , Taiji Kameoka , Chojiro Higuchi , Masanobu Ajioka , Akihiro Yamaguchi
- 申请人地址： JPX Tokyo
- 专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人： Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX5-076538 19930402; JPX5-143228 19930615; JPX5-145882 19930617; JPX5-321722 19931221
- 主分类号： C08G63/16
- IPC分类号： C08G63/16 ; C08G63/60 ; C08G63/81 ; C08K3/32
摘要：
A preparation process of aliphatic polyester having a weight average molecular weight of 15,000 or more by conducting a direct polycondensation reaction of an aliphatic polyhydric alcohol or a mixed aliphatic polyhydric alcohol and an aliphatic polybasic acid or a mixed aliphatic polybasic acid, or additionally a hydroxycarboxylic acid or a mixed hydroxycarboxylic acid or an oligomer of the hydroxycarboxylic acid in a reaction mixture containing an organic solvent.The aliphatic polyester thus obtained contains an extremely small amount of impurities, has low color and can exhibit satisfactory strength in the form of films, filaments and other shaped articles.
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