Process for the production of bisphenols with the use of new coc

Details Process for the production of bisphenols with the use of new coc Process for the production of bisphenols with the use of new coc

1996-10-15

1997-12-16

Krass, Frederick

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Ion-exchange polymer or process of preparing

521 33, 568196, 568718, 568721, 568722, 568723, 568727, 568728, C07C 3917

Patent

active

056986009

ABSTRACT:
The invention relates to the synthesis of bisphenols from monophenols and carbonyl compounds such as aldehydes and ketones with concentrated mineral acids such as hydrochloric acid and/or hydrogen chloride gas as acid catalysts and a mercaptan as cocatalyst, which is fixed by an ion-pair bond to a matrix insoluble in the reaction medium.

REFERENCES:
patent: 2182308 (1939-12-01), Britten
patent: 2191831 (1940-02-01), Perkins
patent: 2468982 (1949-05-01), Jansen
patent: 2623908 (1952-12-01), Stoesser
patent: 2775620 (1956-12-01), Williamson
patent: 4912263 (1990-03-01), Rudolph et al.
patent: 4982014 (1991-01-01), Freitag et al.
patent: 5210328 (1993-05-01), Freitag et al.
patent: 5212206 (1993-05-01), Rudolph
patent: 5284981 (1994-02-01), Rudolph et al.
Chemical Abstracts 58, 1403e.

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