发明名称 |
PROCESS FOR CONTINUOUSLY PRODUCING POLYESTER |
摘要 |
<p>A process for continuously producing a polyester comprising an aromatic dicarboxylic acid or a lower alkyl ester thereof and an alkylene glycol having 2 to 4 carbon atoms as the main glycol component by recycling part or all of a distillate comprising an alkylene glycol having 2 to 4 carbon atoms recovered from a polycondensation reaction step as the main component as a raw material for the polyester. Low-boiling substances contained in the distillate are separated by flush distillation and the distillate is supplied to an ester exchange reaction step or esterification reaction step.</p> |
申请公布号 |
EP1245606(A4) |
申请公布日期 |
2003.06.04 |
申请号 |
EP20010925902 |
申请日期 |
2001.04.25 |
申请人 |
TEIJIN LIMITED |
发明人 |
NAKANE, MIKIO;YAMAGUCHI, KENTARO;TAKENAGA, FUMINORI |
分类号 |
C08G63/183;C08G63/78;(IPC1-7):C08G63/78 |
主分类号 |
C08G63/183 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|