发明名称 |
Preparation of bisphenols. |
摘要 |
<p>A process for the preparation of bisphenols which comprises reacting a phenol with a ketone in the presence of a cation exchange resin catalyst and a mercaptan co-catalyst in a reactor or a series of reactors wherein all of the phenol and a portion of the mercaptan is injected into the beginning of the reactor or the first reactor and the remaining mercaptan is injected along the reactor length or in the subsequent reactors whereby cyclic dimers formation is reduced.</p> |
申请公布号 |
EP0342758(B1) |
申请公布日期 |
1995.05.10 |
申请号 |
EP19890201241 |
申请日期 |
1989.05.16 |
申请人 |
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V. |
发明人 |
VAN SHAW, PAUL |
分类号 |
B01J31/10;C07B61/00;C07C37/20;C07C39/16;(IPC1-7):C07C39/16 |
主分类号 |
B01J31/10 |
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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