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. 04, 2004
Filed:
Jun. 04, 2003
Rolf-Hartmuth Fischer, Heidelberg, DE;
Frank Stein, Bad Dürkheim, DE;
Rolf Pinkos, Bad Dürkheim, DE;
Michael Hesse, Worms, DE;
Michael Jolyon Sprague, Mannheim, DE;
Markus Rösch, Oppenheim, DE;
Holger Borchert, Offstein, DE;
Stephan Schlitter, Limburgerhof, DE;
Ralf-Thomas Rahn, Mannheim, DE;
Alexander Weck, Freinsheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Unsubstituted or alkyl-substituted THF is obtained by catalytic hydrogenation in the gas phase of C -dicarboxylic acids and/or their derivatives using a catalyst comprising <80% by weight, preferably <70% by weight, in particular from 10 to 65% by weight, of CuO and >20% by weight, preferably >30% by weight, in particular from 35 to 90% by weight, of an oxidic support having acid centers, at a hot spot temperature of from 240 to 310° C., preferably from 240 to 280° C., and a WHSV over the catalyst of from 0.01 to 1.0, preferably from 0.02 to 1, in particular from 0.05 to 0.5, kg of starting material/l of catalyst x hour.