Process for the preparation of polyhydric phenols

Details Process for the preparation of polyhydric phenols Process for the preparation of polyhydric phenols

1980-06-30

1982-04-13

Lone, Werren B.

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

Organic compounds

Oxygen containing

568712, 568717, 568721, 568731, 568735, 568737, 568741, 568743, 568771, 568767, 568650, 560 70, 560 86, 562464, 562478, C07C 3912, C07C 7924, C07C 9130, C07C14936

Patent

active

043249256

ABSTRACT:
An improved process for the preparation of a polyhydric phenol by hydroxylation of a phenol with a peroxidic hydroxylating agent, is disclosed. The improvement resides in that before the hydroxylation, all or some of the mixture to be hydroxylated is treated with a cation exchanger.

REFERENCES:
patent: 2734925 (1956-02-01), Neuworth
patent: 2785206 (1957-03-01), Neuworth
patent: 4208536 (1980-06-01), Constantini et al.
patent: 4214105 (1980-07-01), Seifert et al.
Kirth-Othmer, "Encyclopaedia of Chem. Techn.," 2nd ed., vol. 11, pp. 462 to 492 esp. pp. 469 & 488 (1966).

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