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:
May. 20, 2014
Filed:
Aug. 18, 2009
Applicants:
Axel Franzke, Mannheim, DE;
Robert Baumann, Mannheim, DE;
Michael Bock, Ruppertsberg, DE;
Roderich Roettger, Langenhagen, DE;
Andreas Leitner, Pittsburg, PA (US);
Matthias Kloetzer, Kroppen, DE;
Inventors:
Axel Franzke, Mannheim, DE;
Robert Baumann, Mannheim, DE;
Michael Bock, Ruppertsberg, DE;
Roderich Roettger, Langenhagen, DE;
Andreas Leitner, Pittsburg, PA (US);
Matthias Kloetzer, Kroppen, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 261/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing urethanes by reacting aromatic diamines with a dialkyl carbonate, wherein the alkyl radical of the organic dialkyl carbonate comprises 2-18 carbon atoms and one or more heteroatoms and the reaction is performed in the presence of a catalyst.