Process for the preparation of a mixture of Caprolactam, 6-Aminocaproic Acid and 6-Aminocaproic Amide

摘要

Process for the preparation of a mixture of epsilon -caprolactam, 6-aminocaproic acid and 6-aminocaproic amide by heating an aqueous mixture containing ammonia and oligomers of 6-aminocaproic acid and/or of 6-aminocaproic amide, the aqueous mixture containing 0.5-7 wt. % of equivalent ammonia (calculated as NH3) and the temperature lying between 280 DEG C. and 330 DEG C., in which by "equivalent ammonia" is meant free ammonia and ammonia present in the form of a terminal amide group of one of the compounds present in the aqueous mixture.