Process for the purification of crude caprolactam

US5458740A · kind A · utility

Assignee

• BASF SE

Inventors

• Thomas P. Losier · Lake Jackson, US
• Donald R. Johnson · Lino Lakes, US
• Hugo Fuchs · Ludwigshafen, DE
• Gerald Neubauer · Weinheim, DE
• Josef Ritz · Ludwigshafen, DE

Key dates

• Filing date: Mar 4, 1994
• Grant date: Oct 17, 1995
• Expiry date: Mar 4, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/90
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the purification of caprolactam from crude caprolactam by distilling the crude caprolactam in the presence of an anorganic or organic acid.