Preparation of caprolactam

US5739324A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: May 16, 1996
• Grant date: Apr 14, 1998
• 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

A process for preparing cyclic lactams by reacting amino carbonitriles with water in liquid phase in the presence of heterogeneous catalysts based on titanium dioxide, zirconium oxide, cerium oxide and aluminum oxide.