Process for preparing perpropionic acid solution

Details Process for preparing perpropionic acid solution Process for preparing perpropionic acid solution

1991-03-15

1993-04-27

Dees, Jose' G.

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

Organic compounds

Percarboxylic acids or salts thereof

560302, C07C40924

Patent

active

052064255

ABSTRACT:
A process for preparing perpropionic acid solution comprising reacting propionic acid with hydrogen peroxide in the presence of a boric acid catalyst wherein the reaction is carried out by using an ethyl propionate as a reaction solvent, and water in the reaction solution is removed continuously by azeotropic distillation with the reaction solvent. Since the reaction is carried out while the concentration of the peroxide in an aqueous phase separated from the distillate by the azeotropic distillation is maintained at not more than 0.1% by weight, a perpropionic acid solution containing almost no unreacted hydrogen peroxide can be prepared.

REFERENCES:
patent: 3264346 (1966-08-01), Weiberg
patent: 4267124 (1981-05-01), Hardy et al.
patent: 4338260 (1982-07-01), Schirmann
patent: 5098607 (1992-03-01), Inaba et al.

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