Purification of bisphenol-A

Details Purification of bisphenol-A Purification of bisphenol-A

1982-11-15

1984-07-24

Lone, Werren B.

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

Organic compounds

Oxygen containing

C07C 3784

Patent

active

044619154

ABSTRACT:
A method for purifying bisphenol-A involving aqueous crystallization of impure bisphenol-A followed by in-situ treatment of the water/bisphenol-A crystal slurry with an organic washing solvent is presented. The purified bisphenol-A is then either removed from the crystal slurry or melted so the purification process can be repeated before separating the purified bisphenol-A.

REFERENCES:
patent: 2959622 (1906-11-01), Grimme et al.
patent: 3326986 (1967-06-01), Dugan et al.
patent: 3393622 (1970-02-01), Ornstein et al.
patent: 3972950 (1976-08-01), Kwantes
patent: 4079087 (1978-03-01), Sun
patent: 4192955 (1980-03-01), Reinitz
patent: 4212997 (1980-07-01), Adams
patent: 4294993 (1981-10-01), Li
patent: 4324926 (1982-04-01), Demler et al.

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