Method for producing ethylenediamine

US7915454B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Alfred Oftring · Bad Dürkheim, DE
• Kirsten Dahmen · Mannheim, DE
• Randolf Hugo · Dirmstein, DE
• Thilo Hahn · Kirchheimbolanden, DE
• Katrin Baumann · Mannheim, DE
• Johann-Peter Melder · Schifferstadt, DE

Key dates

• Filing date: Feb 28, 2008
• Grant date: Mar 29, 2011
• Expiry date: Mar 25, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C209/48
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing ethylenediamine by hydrogenation of aminoacetonitrile over a catalyst, wherein the hydrogenation is carried out in a solution comprising aminoacetonitrile, water in a proportion of from 0 to 60% by weight and a solvent and the aminoacetonitrile comprised in the solution is fed into the reaction vessel at a rate which is not greater than the rate at which the aminoacetonitrile reacts with hydrogen in the hydrogenation.