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. 18, 2007
Filed:
Jun. 11, 2003
Michael Hesse, Worms, DE;
Stephan Schlitter, Limburgerhof, DE;
Holger Borchert, Offstein, DE;
Markus Schubert, Ludwigshafen, DE;
Markus Rösch, Oppenheim, DE;
Nils Bottke, Mannheim, DE;
Rolf-hartmuth Fischer, Heidelberg, DE;
Alexander Weck, Freinsheim, DE;
Gunther Windecker, Ludwigshafen, DE;
Gunnar Heydrich, Limburgerhof, DE;
Michael Hesse, Worms, DE;
Stephan Schlitter, Limburgerhof, DE;
Holger Borchert, Offstein, DE;
Markus Schubert, Ludwigshafen, DE;
Markus Rösch, Oppenheim, DE;
Nils Bottke, Mannheim, DE;
Rolf-Hartmuth Fischer, Heidelberg, DE;
Alexander Weck, Freinsheim, DE;
Gunther Windecker, Ludwigshafen, DE;
Gunnar Heydrich, Limburgerhof, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Optionally alkyl-substituted 1,4-butanediol is prepared from C-dicarboxylic acids and/or of derivatives thereof by: The catalysts employed in each of the hydrogenation stages comprise ≦95% by weight of CuO, and ≦5% by weight of an oxidic support, and the second reactor has a higher pressure than the first reactor.