| 发明名称 |
PREPARATION OF POLYTRIMETHYLENE ETHER GLYCOL OR COPOLYMERS THEREOF |
| 摘要 |
This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof having a number-average molecular weight of at least about 250 g/mole by a polycondensation reaction using at least one acid catalyst.
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| 申请公布号 |
US2009118464(A1) |
申请公布日期 |
2009.05.07 |
| 申请号 |
US20080262609 |
申请日期 |
2008.10.31 |
| 申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HARMER MARK ANDREW;HOFFMANN CHRISTIAN;JACKSON SCOTT CHRISTOPHER;MURPHY EDWARD R.;SPENCE RUPERT |
| 分类号 |
C08G65/34 |
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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