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. 19, 2017
Filed:
Dec. 17, 2013
Applicant:
Bayer Materialscience Ag, Leverkusen, DE;
Inventors:
Karl-Heinz Köhler, Aachen-Brand, DE;
Henning Kahnis, Köln, DE;
Johan Vanden Eynde, Zwijnaarde, BE;
Gabriel Denecker, Kalmthout, BE;
Ricarda Leiberich, Neu-Isenburg, DE;
Kaspar Hallenberger, Leverkusen, DE;
Korbinian Krämer, Köln, DE;
Florian Lipski, Düsseldorf, DE;
Assignee:
Covestro Deutschland AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 68/02 (2006.01);
U.S. Cl.
CPC ...
C07C 68/02 (2013.01); C07C 68/02 (2013.01); C07C 69/96 (2013.01);
Abstract
The present application relates to a method for the continuous production of diaryl carbonate from phosgene and of at least one monohydroxy compound (monophenol) in the presence of catalysts, and to the use thereof for the production of polycarbonates.