| 发明名称 |
Manufacture of polytrimethylene ether glycol |
| 摘要 |
The present invention relates to a process of manufacture of polytrimethylene ether glycol, in which one or more inorganic compounds selected from an inorganic salt and an inorganic base is utilized during certain purification steps to reduce phase separation time.
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| 申请公布号 |
US7164046(B1) |
申请公布日期 |
2007.01.16 |
| 申请号 |
US20060336004 |
申请日期 |
2006.01.20 |
| 申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
SUNKARA HARI BABU;NG HOWARD C.;ZHENG WEI;WU ZHIHONG |
| 分类号 |
C07C43/11;C08J3/26 |
主分类号 |
C07C43/11 |
| 代理机构 |
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