Process for preparing adipic acid with recovery of glutaric and

Details Process for preparing adipic acid with recovery of glutaric and Process for preparing adipic acid with recovery of glutaric and

1979-06-07

1981-03-03

Garner, Vivian

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

Organic compounds

Carboxylic acids and salts thereof

26034674, 26034676, 562513, 562593, C07C 5131, C07C 5143, C07C 5144, C07C 5514

Patent

active

042542839

ABSTRACT:
In the manufacture of adipic acid by nitric acid oxidation of cyclohexanol and cyclohexanone glutaric and succinic acids are recovered from the reaction by-product and waste stream by crystallizing adipic acid and succinic acid out of the stream leaving glutaric acid in the residue; forming succinic anhydride from the succinic acids so obtained; separating the succinic anhydride from the adipic acid by distillation thereby to recover succinic acid in anhydride form; and crystallizing, thereby to recover, the glutaric acid from the residue.

REFERENCES:
patent: 3096369 (1963-07-01), Soeterbroek et al.
patent: 3359283 (1967-12-01), Campbell et al.

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