Process for continuous hydrogenation of adiponitrile (US Patent 5900511)

Patent number: 5900511 Granted: 1999-05-04 Filed: 1998-03-26 Inventors: Sourav Kumar Sengupta (Wilmington, DE, US); Theodore Augur Koch (Wilmington, DE, US); Karl Robert Krause (Orange, TX, US) Assignees: E. I. de Pont de Nemours and Company (Wilmington, DE, US)

Abstract

A process for continuous hydrogenation of adiponitrile (ADN) to hexamethylene diamine (HMD) and optionally to amninocapronitrile (ACN) involving the catalytic hydrogenation of adiponitrile at relatively low temperature (e.g., 75.degree. C.) and