Process for preparing EDDN and/or EDMN by reacting EDFA and/or EDMFA with HCN

US8946459B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Hermann Luyken · Ludwigshafen, DE
• Sebastian Ahrens · Wiesloch, DE
• Gordon Brasche · Frankfurt, DE
• Jens Baldamus · Ludwigshafen, DE
• Robert Baumann · Mannheim, DE
• Randolf Hugo · Dirmstein, DE
• Stephanie Jaegli · Mannheim, DE
• Johann-Peter Melder · Schifferstadt, DE
• Jörg Pastre · Bensheim, DE
• Boris Buschhaus · Mannheim, DE

Key dates

• Filing date: Aug 30, 2012
• Grant date: Feb 3, 2015
• Expiry date: Aug 30, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C253/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for reacting ethylenediamine-formaldehyde adduct (EDFA) and/or ethylene-diamine-monoformaldehyde adduct (EDMFA) with hydrogen cyanide (HCN) in a reactor with limited backmixing at a temperature in the range from 20 to 120° C., wherein the residence time in the reactor is 300 seconds or less.