Process for obtaining high purity bisphenol A

Details Process for obtaining high purity bisphenol A Process for obtaining high purity bisphenol A

1981-05-26

1982-10-12

Lone, Werren B.

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

Organic compounds

Oxygen containing

568749, 568753, C07C 3784

Patent

active

043540465

ABSTRACT:
A method of purifying bisphenols by (1) crystallizing the crude bis from a single liquid phase containing water, bis and an organic solvent, (2) stripping the remaining mother liquor (containing the impurities) of solvent and water, and (3) mixing it with phenol, (4) contacting the mixture of phenol and mother liquor with a cation exchange resin to convert the impurity to the desired product, (5) stripping the phenol and (6) recycling the remainder to the initial crystallizing step.

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