Process for the preparation of bis(4-hydroxyphenyl) sulfone

Details Process for the preparation of bis(4-hydroxyphenyl) sulfone Process for the preparation of bis(4-hydroxyphenyl) sulfone

1990-01-03

1991-12-10

Ceperley, Mary E.

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

Organic compounds

Sulfur containing

C07C31504

Patent

active

050720490

ABSTRACT:
A process for the preparation of bis(4-hydroxyphenyl) sulfone by reacting phenol with sulfuric acid at a temperature of from 140.degree. to 230.degree. C., wherein the sulfuric acid is metered in to the phenol only after the reaction temperature has been reached, the phenol and sulfuric acid are used in a molar ratio of from 1:1 to 25:1 and the reaction is carried out in the absence of an inert solvent.

REFERENCES:
patent: 3297766 (1967-01-01), Bradley et al.
patent: 4125562 (1978-11-01), Darragh et al.
patent: 4162270 (1979-07-01), Ogata et al.
patent: 4778932 (1988-10-01), Manami et al.
Patent Abstracts of Japan, Abstracts of JP 57-35559, published Feb. 1982 and JP 61-36253 published Feb. 1986.
Derwent Abstract of Japanese Patent 50-106,938, published Aug. 1975 (Seitetsu).
Derwent Abstract of Japanese Patent 57-77,664, published May 1982 (Tokai).

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