Method to manufacture bisphenol A

Details Method to manufacture bisphenol A Method to manufacture bisphenol A

1991-11-22

1993-03-30

Lone, Werren B.

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

Organic compounds

Oxygen containing

568722, 568724, 568728, 568749, 568753, 568781, 568782, 568806, C07C 3720, C07C 3770

Patent

active

051985918

ABSTRACT:
The invention relates to a process for obtaining a high purity bisphenol from a post-reaction mixture resulting from the step of synthesis of phenol and acetone in the presence of a strong acid cation exhanger catalyst, by the way of crystallation and separation by distillation followed by recovery of bisphenol-A from the step of thermal catalytic decomposition of by product of the principal process technology in a multistage process.

REFERENCES:
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patent: 4188496 (1980-02-01), Jaquiss et al.
patent: 4301305 (1981-11-01), Kiedik et al.
patent: 4375567 (1983-05-01), Faler
patent: 4847433 (1989-07-01), Kissinger
patent: 4906789 (1990-03-01), Grzywa et al.
patent: 4954661 (1990-09-01), Iimuro
patent: 5087767 (1992-02-01), Okamoto et al.
International Search Report for PCT/PL91/00014.

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