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:
Aug. 29, 2006
Filed:
Jul. 30, 2003
Rolf Pinkos, Bad Dürkheim, DE;
Stefan Käshammer, Schifferstadt, DE;
Volkmar Menger, Neustadt, DE;
Martin Haubner, Eppelheim, DE;
Peter Groll, Dannstadt-Schauernheim, DE;
Stephan Schlitter, Limburgerhof, DE;
Klaus-peter Pfaff, Friedelsheim, DE;
Rolf Pinkos, Bad Dürkheim, DE;
Stefan Käshammer, Schifferstadt, DE;
Volkmar Menger, Neustadt, DE;
Martin Haubner, Eppelheim, DE;
Peter Groll, Dannstadt-Schauernheim, DE;
Stephan Schlitter, Limburgerhof, DE;
Klaus-Peter Pfaff, Friedelsheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention relates to a process for the continuous preparation of THF by reaction of a 1,4-butanediol-containing reaction mixture over a heteropolyacid catalyst which has not been predried, wherein the reaction mixture comprises 2-(4-hydroxybutoxy)tetrahydrofuran.