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:
Dec. 17, 2013
Filed:
Apr. 02, 2012
Robert Baumann, Mannheim, DE;
Markus Christian Biel, Mannheim, DE;
Axel Franzke, Mannheim, DE;
Alfred Oftring, Bad Duerkheim, DE;
Friedhelm Teich, Neckarhausen, DE;
Paul Klingelhoefer, Mannheim, DE;
Marie Katrin Schroeter, Dannstadt-Schauernheim, DE;
Robert Baumann, Mannheim, DE;
Markus Christian Biel, Mannheim, DE;
Axel Franzke, Mannheim, DE;
Alfred Oftring, Bad Duerkheim, DE;
Friedhelm Teich, Neckarhausen, DE;
Paul Klingelhoefer, Mannheim, DE;
Marie Katrin Schroeter, Dannstadt-Schauernheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
A process for preparing aminopolycarboxylates proceeding from the corresponding polyalkanolamines by oxidative dehydrogenation in the presence of a catalyst comprising 1 to 90% by weight of copper, based on the total weight of the catalyst, using a base, which comprises first performing a partial conversion of the polyalkanolamine to a reaction mixture comprising the aminopolycarboxylate at a temperature in the range from 140 to 180° C. until at least 10 to 90 mol% of the polyalkanolamine has been depleted, and then continuing the conversion at elevated temperature.