Purification of caprolactam

US5637700A · kind A · utility

Assignee

• BASF SE

Inventors

• Hugo Fuchs · Ludwigshafen, DE
• Gerald Neubauer · Weinheim, DE
• Claus-Ulrich Priester · Ludwigshafen, DE

Key dates

• Filing date: Aug 30, 1994
• Grant date: Jun 10, 1997
• Expiry date: Aug 30, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D201/16
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Caprolactam is purified by oxidative treatment in which mixtures which essentially contain the caprolactam to be purified and unsaturated lactams are treated with oxygen or an oxygen-containing gas mixture in an alkaline medium.