发明名称 |
Preparation of polytrimthylene ether glycol or copolymers thereof |
摘要 |
This invention relates to a process for preparing polytrimethylene ether glycols or copolymers thereof by a polycondensation reaction using at least one acid catalyst, wherein the temperature of the reaction is controlled such that the average temperature during the first half of the reaction is higher than the average temperature during the second half of the reaction. |
申请公布号 |
US8148491(B2) |
申请公布日期 |
2012.04.03 |
申请号 |
US20080262626 |
申请日期 |
2008.10.31 |
申请人 |
CONFER DAVID C.;HARMER MARK ANDREW;HOFFMANN CHRISTIAN;JACKSON SCOTT CHRISTOPHER;KRISTJANSDOTTIR SIGRIDUR SOLEY;SPENCE RUPERT;E I DU PONT DE NEMOURS AND COMPANY |
发明人 |
CONFER DAVID C.;HARMER MARK ANDREW;HOFFMANN CHRISTIAN;JACKSON SCOTT CHRISTOPHER;KRISTJANSDOTTIR SIGRIDUR SOLEY;SPENCE RUPERT |
分类号 |
C08F6/06;C08F6/12;C08G65/34;C08J3/11 |
主分类号 |
C08F6/06 |
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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