发明名称 |
PROCESS FOR PREPARING BISPHENOL A |
摘要 |
This invention is a process for the preparation of bisphenol A from acetone and phenol. By this invention, the formation of by-products is extremely decreased and post treatment steps can be simplified. This invention involves the following steps. (1) One mole of acetone is reacted with 4 to 12 moles of phenol in the presence of a sulfonic acid type cation exchange resin catalyst modified with a mercapto group-containing compound such as mercaptoethylamine to convert 20 to 60% of acetone, and (2) the reaction mixture containing unreacted acetone is successively reacted in the presence of the hydrochloric acid catalyst. The formation of by-products such as 2-(2-hydroxyphenyl)-2-(4-hydroxyphenyl)propane, Dianin's compound and the like is remarkably reduced by the process of this invention. |
申请公布号 |
CA1282797(C) |
申请公布日期 |
1991.04.09 |
申请号 |
CA19880584934 |
申请日期 |
1988.12.02 |
申请人 |
IIMURO, SHIGERU |
发明人 |
IIMURO, SHIGERU;KITAMURA, TAKASHI;MORIMOTO, YOSHIO |
分类号 |
C07C39/16;B01J27/10;B01J31/10;C07B61/00;C07C27/00;C07C37/20;C07C67/00 |
主分类号 |
C07C39/16 |
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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