Process for the recovery of adipic acid

Details Process for the recovery of adipic acid Process for the recovery of adipic acid

1992-02-26

1993-11-23

Dees, Jose G.

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

Organic compounds

Carboxylic acids and salts thereof

C07C 5142

Patent

active

052646246

ABSTRACT:
This invention relates to a process for the recovery of adipic acid from mother liquors collected during commercial production of adipic acid, wherein said mother liquors contain from 52 to 60% by weight of nitric acid calculated as HNO.sub.3, not taking into account the organic constituents, from 2 to 6% by weight of succinic acid, from 4 to 9% by weight of glutaric acid, and from 5 to 10% by weight of adipic acid, by selective crystallization of the adipic acid dissolved in said mother liquors by

REFERENCES:
patent: 2713067 (1955-07-01), Hamblet et al.
patent: 3096369 (1963-07-01), Soeterbroek et al.
patent: 3476805 (1969-11-01), Vollinger et al.
patent: 3818081 (1974-06-01), Adamek
patent: 4014903 (1977-03-01), Moore
patent: 4254283 (1981-03-01), Mock

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