发明名称 |
PROCESS FOR RECOVERING DIPROPYLENE GLYCOL TERT-BUTYL ETHERS |
摘要 |
<p>A process for making and purifying dipropylene glycol tert-butyl ethers (DPTB) is disclosed. 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.</p> |
申请公布号 |
CA2143407(A1) |
申请公布日期 |
1995.08.29 |
申请号 |
CA19952143407 |
申请日期 |
1995.02.24 |
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):C07C43/11 |
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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