发明名称 |
Process for recovering dipropylene glycol tert-butyl ethers |
摘要 |
A process for making and purifying dipropylene glycol tert-butyl ethers (DPTB). DPTB is made by reacting dipropylene glycol with isobutylene in the presence of an acidic catalyst. Extractive distillation of the product mixture using a glycol extracting agent, preferably dipropylene glycol, allows removal of di-tert-butyl ether impurities as an overhead product. The DPTB product is then distilled to separate it from the glycol extracting agent. High-purity DPTB, substantially free of diethers and exceptionally useful as a solvent, is obtained from the process.
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申请公布号 |
US5552024(A) |
申请公布日期 |
1996.09.03 |
申请号 |
US19940203162 |
申请日期 |
1994.02.28 |
申请人 |
ARCO CHEMICAL TECHNOLOGY, L.P. |
发明人 |
CHANG, TE;HARRIS, STEPHEN H. |
分类号 |
C07C41/42;C07C43/04;(IPC1-7):B01D3/40 |
主分类号 |
C07C41/42 |
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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