发明名称 |
Apparatus and method for producing 2-hydroxycarboxylic acid oligomer |
摘要 |
<p>The present invention provides a method capable of continuously efficiently producing a 2-hydroxycarboxylic acid oligomer while effectively removing the water contained in a raw material and the water produced by dehydration reaction. In production of a 2-hydroxycarboxylic acid oligomer by supplying a 2-hydroxycarboxylic acid to a reaction system, a dehydration system is provided between a raw material supply system and a polymerization reaction system so as to remove the water contained in the raw material and the water produced in the polymerization reaction system. As a result, the raw material in the dehydration system is concentrated and then supplied to the polymerization reaction system.</p> |
申请公布号 |
EP0808861(A2) |
申请公布日期 |
1997.11.26 |
申请号 |
EP19970303503 |
申请日期 |
1997.05.22 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO ALSO KNOWN AS KOBE STEEL LTD. |
发明人 |
MAEDA, HIROSHI;SHIMIZU, KUNIHIKO;KURISHIRO, YUJI;KAWADA, EIICHI;FUJISAWA, KAZUHISA |
分类号 |
C08G63/06;C08G63/78;(IPC1-7):C08G63/78 |
主分类号 |
C08G63/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|