Preparation of caprolactam

Details Preparation of caprolactam Preparation of caprolactam

C - Chemistry, Metallurgy

07

D

260/241.7

C07D 223/10 (2006.01) C07D 201/08 (2006.01)

Patent

CA 2003552

Caprolactam is prepared by heating a 6-aminocaproic ester in liquid phase in the presence of water to 230-350°C under superatmospheric pressure in a reaction medium comprising a liquid aromatic hydrocarbon having a boiling point of from 80 to 240°C which is inert under reaction conditions, and isolating caprolactam from the reaction mixture.

Préparation de caprolactame, consistant à chauffer un ester d'acide 6-aminocaproïque, en phase liquide, en présence d'eau, à 230-350 degrés C, au-dessus de la pression atmosphérique, dans un milieu de réaction comprenant un hydrocarbure aromatique liquide avec un point d'ébullition de 80-240 degrés C, inerte dans les conditions de la réaction, et à isoler le caprolactame du mélange de réaction.

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