Process for the preparation of mixture consisting predominantly

Details Process for the preparation of mixture consisting predominantly Process for the preparation of mixture consisting predominantly

1973-12-28

1976-11-09

Sutto, Anton H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260535R, 260533C, 260343, 260537P, 260531R, 260485R, 260484R, C07C 5904, C07C 5118, C07C 6742

Patent

active

039910997

ABSTRACT:
A process for preparing a mixture of organic carboxylic acids and esters thereof consisting predominantly of epsilon-hydroxycaproic acid, adipic acid, formylvaleric acid, and esters of these acids by oxidizing a mixture of cyclohexane, cyclohexanol and cyclohexanone with molecular oxygen, which comprises withdrawing at least a part of the oxidation reaction mixture from the oxidation reaction system, extracting the organic carboxylic acids and esters thereof from the oxidation reaction mixture until the concentration of the total carboxyl groups of said oxidation reaction mixture is reduced to a value not greater than 1.2 gram equivalents per liter of the reaction mixture, the several ester bonds of the esters contained in reaction mixture being considered to be carboxyl groups, recycling to the oxidation reaction system the resulting liquid extraction residue containing unreacted cyclohexane, cyclohexanol and cyclohexanone and carrying out the oxidation reaction, while recovering the carboxylic acids and esters thereof from the liquid extract.

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