Process for the purification of mixed acids

Details Process for the purification of mixed acids Process for the purification of mixed acids

1969-07-18

1977-11-15

Myers, Jane S.

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

Organic compounds

Carboxylic acid esters

260531R, 260533C, 260537R, 260537P, C07C 6940, C07C 6942, C07C 6944

Patent

active

040585557

ABSTRACT:
Complex mixtures of polycarboxylic organic acids and their precursors, such as the by-products from the air oxidation of cyclohexane and its derivatives, are treated with nitric acid under hydrolytic conditions, esterified with an alcohol, extracted with an immiscible solvent such as benzene, the extraction preferably being carried out simultaneously with esterification, and separated into component diesters.

REFERENCES:
patent: 2824122 (1958-02-01), Kuceski
patent: 2968674 (1961-01-01), Franke et al.
patent: 3329712 (1967-07-01), Danly et al.
patent: 3365490 (1968-01-01), Arthur et al.

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