Preparation of bisphenols

Details Preparation of bisphenols Preparation of bisphenols

1978-07-05

1981-12-29

Lone, Werren B.

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

Organic compounds

Oxygen containing

568728, C07C 3912, C07C 3916

Patent

active

043084052

ABSTRACT:
An improved continuous process for preparing bisphenols from phenols and carbonyl compounds in the presence of an acidic ion-exchange resin is described. The improvement comprises recycling a portion of the stream containing bisphenol to the reaction zone before the bisphenol is recovered therefrom.

REFERENCES:
patent: 2730552 (1956-01-01), Williamson
patent: 2775620 (1956-12-01), Williamson
patent: 2791616 (1957-05-01), Luten
patent: 3242220 (1966-03-01), Apel et al.

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