Countercurrent multi-stage water crystallization of aromatic com

Details Countercurrent multi-stage water crystallization of aromatic com Countercurrent multi-stage water crystallization of aromatic com

1988-02-29

1989-08-29

Lee, Mary C.

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

Organic compounds

Oxygen containing

C07B 6300, C07C 3784, C07C 3906

Patent

active

048619191

ABSTRACT:
A process for the purification of an aromatic compound, e.g. isopropylidenediphenol, comprising using a multi-stage countercurrent process wherein the crystals are melted by the addition of heat and water prior to each crystallization step and wherein one crystallization is accomplished at a pre-selected low temperature.

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