Process for preparing bisphenol A

Details Process for preparing bisphenol A Process for preparing bisphenol A

1989-02-10

1990-08-21

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568724, 568722, C07C 3720, C07C 3770

Patent

active

049508075

ABSTRACT:
A process for producing high-purity bisphenol A comprises reacting phenol with acetone in the presence of an acid catalyst to obtain a product mixture, removing the acid catalyst from the product mixture, thereby yielding a liquid mixture, treating the liquid mixture with a weakly basic ion-exchange resin having pyridyl groups as the exchange groups, and purifying the treated liquid mixture. The process does not cause any corrosion of equipment and any decomposition and discoloration of bisphenol A during distillation.

REFERENCES:
patent: 3073868 (1963-01-01), Prahl
patent: 4375567 (1983-03-01), Faler
patent: 4507509 (1985-03-01), Mendiratta et al.
patent: 4517387 (1985-05-01), Matsunaga et al.

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