The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 04, 2015
Filed:
Aug. 30, 2012
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, Böhl-Iggelheim, DE;
Jörg Pastre, Bensheim, DE;
Boris Buschhaus, Mannheim, DE;
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, Böhl-Iggelheim, DE;
Jörg Pastre, Bensheim, DE;
Boris Buschhaus, Mannheim, DE;
BASF SE, , DE;
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.