Preparation of hexamethyleneimine

US4786727A · kind A · utility

Assignee

• BASF SE

Inventors

• Wolfgang Schroeder · Aachen, DE
• Wolfgang Franzischka · Bischofswerda, DE
• Herbert Mueller · Herznach, CH

Key dates

• Filing date: May 9, 1984
• Grant date: Nov 22, 1988
• Expiry date: May 9, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D295/023
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Hexamethylenemine is obtained by hydrogenating .epsilon.-caprolactam, the latter being vaporized and hydrogenated under a working pressure of less than 10 bar, the gas phase being unsaturated in respect of caprolactam, and the residence time being short.