Process for preparing EDDN and EDMN

US9096497B2 · 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: Aug 4, 2015
• Expiry date: Mar 12, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C253/30
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing EDDN and/or EDMN by conversion of FA, HCN and EDA, the reaction being effected in the presence of water, and, after the conversion, water being depleted from the reaction mixture in a distillation column, which comprises performing the distillation in the presence of an organic solvent which has a boiling point between water and EDDN and/or EDMN at the distillation pressure existing in the column or which forms a low-boiling azeotrope with water.