Process for obtaining high-purity bisphenol A

Details Process for obtaining high-purity bisphenol A Process for obtaining high-purity bisphenol A

1989-03-28

1990-06-05

Manoharan, Virginia

Distillation: processes, separatory

Vaporization zone under positive pressure or vacuum

Including the addition of water or steam

203 96, 568724, B01D 304, B01D 310

Patent

active

049311468

ABSTRACT:
A process for obtaining high-purity bisphenol A by removing most part of phenol from an adduct of bisphenol A with phenol and removing continously the residual phenol by steam stripping, wherein a multi-tubular packed column is used as a stripping equipment. The residual phenol in bisphenol A can be removed constantly. In addition, the process of the present invention is economical because the residual phenol can be removed with a small amount of steam.

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Chemical Abstracts, vol. 109, No. 18, Abstract No. 150239t, Oct. 31, 1988.

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