Process for the separation of dicarboxylic acids

Details Process for the separation of dicarboxylic acids Process for the separation of dicarboxylic acids

1988-06-17

1990-02-27

Lilling, Herbert J.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210639, 210651, 210741, 210743, 435142, C07C 5142, C07C 5713, C07C 5502, B01D 1300

Patent

active

049043897

ABSTRACT:
A process for separation of multicomponent mixtures of dicarboxylic acids, especially, mixtures of C.sub.8 -C.sub.24 saturated and unsaturated acids is derived from a fermentation process, in which an aqueous feed solution containing the mixture of dicarboxylic acids is adjusted in pH value depending on the permeability of the component to be separated and over 95% of the saturated component is separated from the unsaturated material by passing the mixture is content with a membrane filter.

REFERENCES:
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patent: 3843466 (1974-10-01), Akabori et al.
patent: 4075093 (1978-02-01), Walch et al.
patent: 4220720 (1980-09-01), Taoka et al.
patent: 4339536 (1982-07-01), Kato
patent: 4584057 (1986-04-01), Rowe et al.
patent: 4608338 (1986-08-01), Hsieh
patent: 4624920 (1986-11-01), Inoue et al.
patent: 4663048 (1987-05-01), Tanaka et al.
Process Biochemistry, Mar./Apr. 1983, pp. 8-12.

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