Purification of bisphenols by removing residual solvent

Details Purification of bisphenols by removing residual solvent Purification of bisphenols by removing residual solvent

1984-03-29

1985-08-06

Lone, Werren B.

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

Organic compounds

Oxygen containing

568748, 568749, C07C 3784

Patent

active

045337640

ABSTRACT:
Occluded organic solvent is removed from bisphenol crystals by placing in water maintained at a temperature sufficient to form a molten water-bisphenol phase, holding at that temperature for a time sufficient to transfer the organic solvent to the water phase, flash distilling the organic solvent, cooling molten water-bisphenol phase to produce crystallization and thereafter recovering the bisphenol.

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patent: 4408087 (1983-10-01), Li
patent: 4414422 (1983-11-01), Ash et al.
patent: 4461915 (1984-07-01), Mendiratta et al.

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