Countercurrent multi-stage water crystallization of aromatic...

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

C - Chemistry, Metallurgy

07

C

260/623.7

C07C 37/84 (2006.01) C07C 39/16 (2006.01)

Patent

CA 1316943

64693-4421 ABSTRACT A process for the purification or a bisphenol 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.

602863

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