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. 20, 2007
Filed:
Feb. 28, 2003
Rolf-hartmuth Fischer, Heidelberg, DE;
Markus Rösch, Oppenheim, DE;
Nils Bottke, Mannheim, DE;
Alexander Weck, Freinsheim, DE;
Gunther Windecker, Ludwigshafen, DE;
Michael Hesse, Worms, DE;
Holger Borchert, Offstein, DE;
Stephan Schlitter, Limburgerhof, DE;
Rolf-Hartmuth Fischer, Heidelberg, DE;
Markus Rösch, Oppenheim, DE;
Nils Bottke, Mannheim, DE;
Alexander Weck, Freinsheim, DE;
Gunther Windecker, Ludwigshafen, DE;
Michael Hesse, Worms, DE;
Holger Borchert, Offstein, DE;
Stephan Schlitter, Limburgerhof, DE;
Basf Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A process for coproducing alkyl-substituted or unsubstituted THF and pyrrolidones by catalytically hydrogenating C4-dicarboxylic acids and/or derivatives thereof in the gas phase in the presence of copper catalysts and reacting GBL with ammonia or primary amines to give pyrrolidones.