发明名称 |
PROCESS FOR PRODUCING BISPHENOL A |
摘要 |
There is provided a process for producing bisphenol A exhibiting a stable hue without undesired coloration even when treated at an elevated temperature. In the process for producing bisphenol A by reacting acetone with phenol in the presence of an acid-type ion exchange resin as a catalyst and then subjecting the reaction mixture to a reduced-pressure distillation to recover the bisphenol A from a fraction discharged from a bottom of distillation column, said process comprises: washing said acid-type ion exchange resin filled in a reactor with phenol before used in the reaction; and distilling a phenol solution obtained after the washing together with a fraction obtained from a top of the distillation column to recover phenol. |
申请公布号 |
EP1162188(A4) |
申请公布日期 |
2002.12.04 |
申请号 |
EP20010901383 |
申请日期 |
2001.01.17 |
申请人 |
IDEMITSU PETROCHEMICAL CO., LTD. |
发明人 |
IWAHARA, MASAHIRO |
分类号 |
B01J31/10;C07B61/00;C07C37/20;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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