Method for the purification of ion exchange resins used in the p

Details Method for the purification of ion exchange resins used in the p Method for the purification of ion exchange resins used in the p

1987-12-28

1989-07-11

Lone, Werren B.

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

Organic compounds

Oxygen containing

568724, 568728, C07C 3916, C07C 3912

Patent

active

048474320

ABSTRACT:
A method for treating a sulfonic acid-containing ion exchange resin to remove destabilizing impurities therefrom is disclosed. The method comprises contacting the resin with a base, followed by contact with a strong acid. The treated ion exchange resin is particularly suitable for use as a catalyst in the preparation of bisphenol A.

REFERENCES:
patent: 3172916 (1965-03-01), Wagner
patent: 3394089 (1968-07-01), McNutt et al.
patent: 4400555 (1983-08-01), Mendiratta
"Neutralization of Impurities Formed During Manufacture and Separation of Bisphenol A Catalyzed by Cation Exchangers".
Kiedik, Maciej et al., (Instytut Ciezkiej Syntezy Organicznej "Blachownia"); Pol. PL 130,206 (Cl. C07C37/86), Apr. 25, 1986, Appl. 224,958, Jun. 1980; 3 pp.; Abstract No. Chem (107)176628c.

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