Method for producing aminonitriles

US8153845B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Feb 28, 2008
• Grant date: Apr 10, 2012
• Expiry date: May 11, 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 an amino nitrile mixture comprising aminoacetonitrile (AAN) and from 5 to 70% by weight of iminodiacetonitrile (IDAN), which comprises heating crude AAN which is largely free of formaldehyde cyanohydrin (FACH-free) at a temperature of from 50 to 150° C.