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:
Mar. 29, 2011
Filed:
Feb. 28, 2008
Alfred Oftring, Bad Dürkheim, DE;
Kirsten Dahmen, Freinsheim, DE;
Randolf Hugo, Dirmstein, DE;
Thilo Hahn, Kirchheimbolanden, DE;
Katrin Baumann, Mannheim, DE;
Johann-peter Melder, Böhl-Iggelheim, DE;
Alfred Oftring, Bad Dürkheim, DE;
Kirsten Dahmen, Freinsheim, DE;
Randolf Hugo, Dirmstein, DE;
Thilo Hahn, Kirchheimbolanden, DE;
Katrin Baumann, Mannheim, DE;
Johann-Peter Melder, Böhl-Iggelheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The invention relates to a process for preparing ethylenediamine by hydrogenation of aminoacetonitrile over a catalyst, wherein the hydrogenation is carried out in a solution comprising aminoacetonitrile, water in a proportion of from 0 to 60% by weight and a solvent and the aminoacetonitrile comprised in the solution is fed into the reaction vessel at a rate which is not greater than the rate at which the aminoacetonitrile reacts with hydrogen in the hydrogenation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile