Preparation of bisphenols

Details Preparation of bisphenols Preparation of bisphenols

1988-05-16

1989-08-22

Lone, Werren B.

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

Organic compounds

Oxygen containing

568728, C07C 3916

Patent

active

048598038

ABSTRACT:
A process for the preparation of bisphenols which comprises treating a phenol with a ketone in the presence of a cation exchange resin catalyst and a mercaptan co-catalyst in a reactor or a series of reactors wherein all of the phenol and a portion of the mercaptan is injected into the beginning of the reactor or the first reactor and the remaining mercaptan is injected along the reactor length or in the subsequent reactors whereby cyclic dimers formation is reduced.

REFERENCES:
patent: 2730552 (1956-01-01), Williamson
Hougen et al. "Chemical Process Principles", p. 1032 Chapter XX1 Lines 10-12, Part Three TP155 H65 C.4.

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