发明名称 |
IMPROVED PROCESS FOR THE MANUFACTURE OF CHLOROPRENE |
摘要 |
<p>An improved process for the catalytic dehydrochlorination of 3,4-dichlorobutene-1 with aqueous alkali, wherein the effluent from the dehydrochlorination reactor is separated into phases, and the organic phase is steam-stripped at low temperature (below about 80 DEG C.) to recover chloroprene product, while the steam stripper heels are returned to the dehydrochlorination reactor. A small portion of the heels are purged prior to being recycled. Most of the catalyst is recovered and returned to the reaction, but a small amount of make-up catalyst is added. Chloroprene made in this process is a valuable monomer which finds use in the manufacture of a broad line of synthetic elastomers of considerable industrial interest.</p> |
申请公布号 |
EP0114643(B1) |
申请公布日期 |
1986.04.23 |
申请号 |
EP19840100434 |
申请日期 |
1984.01.17 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
ENGLERT, JOSEPH FRANCIS, JR.;MAURIN, LOUIS JOSEPH, III;STEWART, CLARE AUGUSTUS, JR. |
分类号 |
B01J31/00;C07B61/00;C07C17/00;C07C17/25;C07C21/21;C07C67/00;(IPC1-7):C07C21/21;C07C17/34 |
主分类号 |
B01J31/00 |
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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