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. 30, 2014
Filed:
Mar. 18, 2009
Applicants:
Andreas Leitner, Pittsburg, PA (US);
Robert Baumann, Mannheim, DE;
Wolfgang Siegel, Limburgerhof, DE;
Inventors:
Andreas Leitner, Pittsburg, PA (US);
Robert Baumann, Mannheim, DE;
Wolfgang Siegel, Limburgerhof, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 231/02 (2006.01); C07C 269/04 (2006.01); C07C 271/28 (2006.01);
U.S. Cl.
CPC ...
C07C 269/04 (2013.01); C07C 271/28 (2013.01);
Abstract
The object of the invention is to provide a process for preparing urethanes by reacting aromatic amines with a dialkyl carbonate, wherein the alkyl radical of the organic dialkyl carbonate comprises from 2 to 18 carbon atoms, and the reaction is carried out in the presence of a base.