Liquid-liquid extraction of isobutyric acid from aqueous HF solu

Details Liquid-liquid extraction of isobutyric acid from aqueous HF solu Liquid-liquid extraction of isobutyric acid from aqueous HF solu

1980-02-04

1981-06-02

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

With disparate physical separation

Utilizing liquid-liquid extracting of distillation product

562521, C07C 5144, C07C 5148

Patent

active

042709830

ABSTRACT:
A method for recovering isobutyric acid from a solution thereof in concentrated aqueous hydrogen fluoride, the latter having served as the reaction medium for effecting the carbonylation of propylene. The method features the partial removal of anhydrous hydrogen fluoride from said solution to provide an aqueous phase of reduced hydrogen fluoride content from whence the isobutyric acid is extracted with optimum efficiency with an immiscible organic solvent.

REFERENCES:
patent: 2831877 (1958-04-01), Koch
patent: 3282993 (1966-11-01), Chafetz et al.
patent: 3632638 (1972-01-01), Hyman
patent: 3663613 (1972-05-01), Pai et al.
patent: 3816496 (1974-06-01), Schnabel

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