Preparation of caprolactam

US4767857A · kind A · utility

Assignee

• BASF SE

Inventors

• Franz Merger · Bischofswerda, DE
• Claus-Ulrich Priester · Ludwigshafen, DE
• Rolf Fischer · Heidelberg, DE
• Manfred Sauerwald · Meckenheim, DE

Key dates

• Filing date: Dec 16, 1987
• Grant date: Aug 30, 1988
• Expiry date: Dec 16, 2007

Classification

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

Abstract

Caprolactam is prepared by heating a 6-aminocaproic ester at 100.degree.-320.degree. C. in the presence of a reaction medium comprising an aromatic hydrocarbon which is liquid under reaction conditions and has a boiling point from 80.degree. to 240.degree. C., and isolating caprolactam from the reaction medium.