Title:
MANUFACTURE OF CAPROLACTAM
Document Type and Number:
Japanese Patent JPS62178571
Kind Code:
A
Abstract:
epsilon -caprolactam is prepared by a process in which (a) a 5-formylvalerate is reacted with water in the presence of an acidic agent at from 30 DEG to 200 DEG C., (b) the 5-formylvaleric acid thus obtained is reacted with excess ammonia and hydrogen in the presence of a hydrogenation catalyst and of a solvent which is inert under the reaction conditions, at from 50 DEG to 150 DEG C. under superatmospheric pressure, and (c) after the ammonia has been separated off, the resulting solution of 6-aminocaproic acid is heated to 150 DEG -370 DEG C. and the caprolactam formed is isolated.
Inventors:
UBUE FUAGUTO
RORUFU FUISHIYAA
FURANTSU MERUGAA
HANSU MARUTEIN FUUTOMAHAA
RORUFU FUISHIYAA
FURANTSU MERUGAA
HANSU MARUTEIN FUUTOMAHAA
Application Number:
JP199987A
Publication Date:
August 05, 1987
Filing Date:
January 09, 1987
Export Citation:
Assignee:
BASF AG
International Classes:
C07D223/04; C07D201/08; (IPC1-7): C07D223/04
Attorney, Agent or Firm:
Tajiro Taiji