发明名称 |
Process for producing aliphatic polyester |
摘要 |
Ring-opening polymerization of a cyclic ester is performed by using an alcohol and water positively as initiators or/and molecular weight-adjusting agents to control the initial properties and properties with time of the resultant aliphatic polyester. More specifically, an aliphatic polyester is produced by ring-opening polymerization of a cyclic ester containing water and an alcohol based on a total proton concentration and a ratio between a mol concentration of carboxyl (carboxylic acid)-source compounds including water and a mol concentration of alkoxycarbonyl (ester)-source compounds, as polymerization-controlling indexes.
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申请公布号 |
US2007073033(A1) |
申请公布日期 |
2007.03.29 |
申请号 |
US20040577379 |
申请日期 |
2004.11.04 |
申请人 |
SATO HIROYUKI;AKUTSU FUMIO;KOBAYASHI FUMINORI;OKADA YASUSHI |
发明人 |
SATO HIROYUKI;AKUTSU FUMIO;KOBAYASHI FUMINORI;OKADA YASUSHI |
分类号 |
C08G63/02;C08G63/06;C08G63/78 |
主分类号 |
C08G63/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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