Process for the production of bisphenol A

Details Process for the production of bisphenol A Process for the production of bisphenol A

1993-09-23

1995-03-21

Richter, Johann

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

Organic compounds

Oxygen containing

568724, 568749, C07C 3916

Patent

active

053997840

ABSTRACT:
A high quality bisphenol A with a high purity and an excellent hue is produced from a crystalline adduct of bisphenol A and phenol by washing the adduct with specifically purified phenol, followed by decomposition of the washed adduct to separate bisphenol A. The purification is performed by a method including contacting raw material phenol with a strong-acid ion exchange resin to obtain treated phenol, and distilling the treated phenol.

REFERENCES:
patent: 3290390 (1966-12-01), Prahl
patent: 3936507 (1976-02-01), Ligorati et al.
patent: 4327229 (1982-04-01), Mendiratta
patent: 4517387 (1985-05-01), Matsunaga et al.
patent: 4942265 (1990-07-01), Iimuro et al.
European Search Report dated Aug. 20, 1993.

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