发明公开
EP0765685A2 Method for preparing ion-exchange resin for use as a catalyst in the synthesis of bisphenols
失效
一种用于在双酚制造Ionenaustauscherhartzes用作催化剂的方法
- 专利标题： Method for preparing ion-exchange resin for use as a catalyst in the synthesis of bisphenols
- 专利标题（中）： 一种用于在双酚制造Ionenaustauscherhartzes用作催化剂的方法
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申请号： EP96306229.4申请日： 1996-08-28
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公开(公告)号： EP0765685A2公开(公告)日： 1997-04-02
- 发明人: Cipullo, Michael John , Pressman, Eric James
- 申请人： GENERAL ELECTRIC COMPANY
- 申请人地址： 1 River Road Schenectady, NY 12345 US
- 专利权人： GENERAL ELECTRIC COMPANY
- 当前专利权人： GENERAL ELECTRIC COMPANY
- 当前专利权人地址： 1 River Road Schenectady, NY 12345 US
- 代理机构： Szary, Anne Catherine, Dr.
- 优先权： US522187 19950831
- 主分类号： B01J31/08
- IPC分类号： B01J31/08 ; C07C37/20
摘要：
In the preparation of bisphenol-A by condensation of phenol with acetone in the presence of an acidic ion-exchange resin catalyst, pretreatment of the catalyst to render it free of acidic oligomers which are detrimental to the preparation of bisphenol-A entails washing the catalyst resin with deionized water until the washings show a specific conductance of less than 50 micromho/cm at 25°C.
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