Ion exchange resin catalyst for the synthesis of bisphenols and

Details Ion exchange resin catalyst for the synthesis of bisphenols and Ion exchange resin catalyst for the synthesis of bisphenols and

1995-10-23

1998-06-02

Caldarola, Glenn

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502155, 502159, B01J 3110

Patent

active

057599424

ABSTRACT:
An ion exchange resin catalyst containing sulfonated styrene-divinylbenzene copolymer, a porous structure with micropore area and transfer pass networks, the transfer pass network is composed of main pass networks and branch pass networks, in non-swollen state, the pore size of the main pass network is 9.times.10.sup.3 -38.times.10.sup.3 nanometer and the pore size of the branch pass network is 20-150 manometer, the pore size of the micropore area pass is 5-20 nanometer, wherein the pore capacity of the micropore pass with the pore size of 5-10.4 nm is more than 50% of the total pore capacity of the micropore area, and the ratio of the pore capacity of the micropore area to that of the transfer network area is 0.25-1.1. The catalyst is useful to condense phenols with ketones.

REFERENCES:
patent: 3965039 (1976-06-01), Chaplits et al.
patent: 4820740 (1989-04-01), Li
patent: 5502016 (1996-03-01), Kiedik et al.

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