Process for the production of bisphenols

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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568722, 568723, 568728, C07C 3916

Patent

active

053027744

ABSTRACT:
The invention relates to a process for the production of bisphenols from acetone and phenols in the presence of sulfonic acid ion exchanger resins modified with alkyl-SH groups, in which 0.6 to 5% by weight H.sub.2 O is added to the mixture of phenol and acetone before the reaction.

REFERENCES:
patent: 2623908 (1952-12-01), Stosser et al.
patent: 2775620 (1956-12-01), Williamson
patent: 3634341 (1972-01-01), Gammill et al.
patent: 4391997 (1983-07-01), Mandiratta
patent: 4423252 (1983-12-01), Maki et al.
patent: 4847433 (1989-07-01), Kissinger
patent: 4859803 (1989-08-01), Shaw
patent: 5210328 (1993-05-01), Freitag et al.

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