Process for the production of cyclic carboxylic acid imides

Details Process for the production of cyclic carboxylic acid imides Process for the production of cyclic carboxylic acid imides

1972-09-08

1976-06-29

Rotman, Alan L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260250BN, 2602564N, 260272, 2602948C, 260295M, 2602955B, 260326R, 2603068R, 203 53, 203 59, 203 63, 203 96, C07D25152

Patent

active

039667260

ABSTRACT:
In a process for reacting an aromatic or hydroaromatic alicyclic or heterocyclic dicarboxylic acid or its anhydride with an aliphatic or aromatic alicyclic or heterocyclic mono- or di-amine to produce an N-substituted dicarboxylic acid imide with a splitting off of water, the improvement of carrying out the reaction in a liquid solvent mixture consisting essentially of a non-polar organic solvent and a strongly polar organic solvent which together form a ternary azeotrope with water at reaction temperatures between about 40.degree.C. and 160.degree.C. The imide products are generally known for use as intermediates and final products in a number of industries.

REFERENCES:
patent: 3072725 (1963-01-01), Surman

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