| 发明名称 |
PROCESS FOR PREPARATION OF POLYTRIMETHYLENE ETHER GLYCOLS |
| 摘要 |
There is disclosed a process for preparing polytrimethylene ether glycol by acid catalyzed polycondensation, neutralization and contact with filter aid. The process avoids hydrolysis and yet provides product substantially free of catalyst derived end groups. |
| 申请公布号 |
EP1756028(A1) |
申请公布日期 |
2007.02.28 |
| 申请号 |
EP20050761241 |
申请日期 |
2005.06.15 |
| 申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
SUNKARA, HARI, BABU;PARMPI, PARASKEVI |
| 分类号 |
C08G65/34;C07C41/03;C07C41/09;C07C41/34;C07C43/13;C08G65/46 |
主分类号 |
C08G65/34 |
| 代理机构 |
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代理人 |
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| 主权项 |
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