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:
Sep. 02, 2014
Filed:
Nov. 30, 2010
Applicants:
Michael Bock, Ruppertsberg, DE;
Eckhard Stroefer, Mannheim, DE;
Robert Baumann, Mannheim, DE;
Axel Franzke, Mannheim, DE;
Joachim Pfeffinger, Ludwigshafen, DE;
Inventors:
Michael Bock, Ruppertsberg, DE;
Eckhard Stroefer, Mannheim, DE;
Robert Baumann, Mannheim, DE;
Axel Franzke, Mannheim, DE;
Joachim Pfeffinger, Ludwigshafen, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 263/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process is proposed for preparing isocyanates by thermally cleaving carbamates to obtain a carbamate cleavage gas comprising the corresponding isocyanate and the corresponding alcohol, which comprises quenching the carbamate cleavage gas in the presence of an ether which functions as an inhibitor for the reverse reaction of the isocyanate with the alcohol.