PROCESS FOR THE PREPARATION OF A MIXTURE OF .EPSILON.-CAPROLACTAM, 6-AMINOCAPROIC ACID AND 6-AMINOCAPROIC AMIDE

摘要

Process for the preparation of a mixture of .epsilon.-caprolactam, 6aminocaproic acid and 6-aminocaproic amide by heating an aqueous mixture containing ammonia and oligomers of 6-aminocaproic acid and/or of 6aminocaproic amide, the aqueous mixture containing 0.5-7 wt.% of equivalent ammonia (calculated as NH3) and the temperature lying between 280 ~C and 330 ~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.