发明名称 |
Process for preparing bisphenol A. |
摘要 |
<p>This invention relates to a process for preparing 2,2-bis(4-hydroxyphenyl)propane, e.g. bisphenol A and particularly to a process for preparing high quality bisphenol A with good workability by distilling the intermediate adduct of bisphenol A and phenol. The adduct of bisphenol A and phenol is fed to a distillation column. Phenol is recovered from the top of the column and bisphenol A is obtained from its bottom. In this distillation process, the adduct of bisphenol A and phenol is added with a part of recycled bottom liquid. Consequently troubles such as plugging of the distillation column are prevented, continuous operation becomes possible for a long period of time and high quality bisphenol A can be steadily obtained.</p> |
申请公布号 |
EP0290179(A1) |
申请公布日期 |
1988.11.09 |
申请号 |
EP19880303706 |
申请日期 |
1988.04.25 |
申请人 |
MITSUI TOATSU CHEMICALS, INCORPORATED |
发明人 |
IIMURO, SHIGERU;KITAMURA, TAKASHI;MORIMOTO, YOSHIO |
分类号 |
C07C37/20;C07C27/00;C07C37/74;C07C39/16;C07C67/00;(IPC1-7):C07C37/74 |
主分类号 |
C07C37/20 |
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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