Preparation of caoprolactam

US5646277A · kind A · utility

Assignee

• BASF SE

Inventors

• Eberhard Fuchs · Bischofswerda, DE
• Tom Witzel · Ludwigshafen, DE

Key dates

• Filing date: May 16, 1996
• Grant date: Jul 8, 1997
• Expiry date: May 16, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D201/08
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Cyclic lactams are prepared by reacting amino carbonitriles with water in liquid phase in a fixed bed reactor in the presence of heterogeneous catalysts which have no soluble constituents under the reaction conditions.