Method for the production of 2-pyrrolidone

US7164031B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Martin Rudloff · Bad Dürkheim, DE
• Peter Stops · Altrip, DE
• Erhard Henkes · Lorsch, DE
• Helmut Schmidtke · Bensheim, DE
• Rolf Fischer · Heidelberg, DE
• Manfred Julius · Schifferstadt, DE
• Rolf Lebkucher · Mannheim, DE
• Karl-Heinz Ross · Grünstadt, DE

Key dates

• Filing date: Aug 30, 2002
• Grant date: Jan 16, 2007
• Expiry date: Jul 12, 2023

Classification

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

Abstract

A process for continuously preparing 2-pyrrolidone by reacting gamma-butyrolactone with ammonia in the liquid phase in the presence of water, wherein the reaction is carried out at a temperature of from 275 to 300° C. and an absolute pressure of from 140 to 180 bar.