Purification process

Details Purification process Purification process

1978-12-14

1980-03-04

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

With disparate physical separation

Utilizing liquid-liquid extracting of distillation product

203 48, 203 69, 203 91, 562593, B01D 336, C07C 5146

Patent

active

041916166

ABSTRACT:
Alkane dicarboxylic acids of at least 4 carbon atoms particularly the mixture of succinic, glutaric and adipic acids obtained as byproduct in the manufacture of adipic acid are purified by co-distillation with an alkylbenzene having an atmospheric pressure boiling point of 300.degree. to 350.degree. C. especially dodecylbenzene.

REFERENCES:
patent: 2398485 (1946-04-01), Wilson
patent: 3036126 (1962-05-01), Chafetz
patent: 3036127 (1962-05-01), Chafetz
patent: 3180878 (1965-04-01), Campbell et al.
patent: 3511757 (1970-05-01), Costain et al.
patent: 3551300 (1970-12-01), Longley

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