Method for producing high-purity bisphenols

Details Method for producing high-purity bisphenols Method for producing high-purity bisphenols

1994-03-10

1995-12-12

Siegel, Alan

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

Organic compounds

Oxygen containing

568723, 568724, 568729, C07C 3912, C07C 3916

Patent

active

054751543

ABSTRACT:
Low-color bisphenols may be produced by condensing phenol with ketones in the presence of a strong-acid cation exchange resin acting as an acid catalyst for the condensation reaction, and of a small amount, relative to the acid catalyst, of a weak-base anion exchange resin.

REFERENCES:
patent: 4766254 (1988-08-01), Faler et al.
patent: 5008470 (1991-04-01), Powell et al.
patent: 5059721 (1991-10-01), Powell et al.
patent: 5124490 (1992-06-01), Cipullo
patent: 5233096 (1993-08-01), Lundquist et al.
patent: 5288926 (1994-02-01), Patrascu et al.

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