Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1995-08-31
1998-03-03
Geist, Gary
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568723, C07C 3912, C07C 3916
Patent
active
057236917
ABSTRACT:
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.degree. C.
REFERENCES:
patent: 3037052 (1962-05-01), Bortnick
patent: 5146007 (1992-09-01), Cipullo
Cipullo Michael John
Pressman Eric James
Geist Gary
General Electric Company
Puttlitz, Jr. Karl J.
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