Purification of bisphenol-A

Details Purification of bisphenol-A Purification of bisphenol-A

1994-07-28

1995-07-18

Lone, Werren B.

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

Organic compounds

Oxygen containing

568722, 568727, 568728, 4222451, 422255, C07C 3784

Patent

active

054343160

ABSTRACT:
Bisphenol-A produced by the condensation of acetone and phenol is freed of contaminant co-products by melting and crystallization in and from water. The final washing, in hot water, cleanses the crystal surfaces of remaining contaminants without the need for organic solvents.

REFERENCES:
patent: 3326986 (1967-06-01), Doggan et al.
patent: 4927973 (1990-05-01), Dong et al.
patent: 5243093 (1993-09-01), Kissinger et al.
patent: 5300700 (1994-04-01), Malamet et al.
patent: 5345000 (1994-09-01), Moriya et al.
Kokai Japanese Patent Application No. HEI 5 (1993)-97746.
Kokai Japanese Patent Application No. HEI 5 (1993)-97744.

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