Process for recovering 4,4' dihydroxydiphenyl sulfone from an is

Details Process for recovering 4,4' dihydroxydiphenyl sulfone from an is Process for recovering 4,4' dihydroxydiphenyl sulfone from an is

1989-01-18

1991-03-19

Ceperley, Mary E.

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

Organic compounds

Sulfur containing

C07C31506

Patent

active

050012703

ABSTRACT:
A process for recovering 4,4' bisphenol sulfone from an isomer mixture comprising the 4,4' and 2,4' isomers of bisphenol sulfone, which process comprises dissolving the isomer misture in a basic aqueous solution and adding a non-neutralizing amount of acid to selectively precipitate crystals of 4,4' bisphenol sulfone.

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Hinkel and Summers, 4:4'-and 2:4'-Dihdyroxydiphenyl Sulfones, Chemical Society Journal (1949) p. 2854.

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