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. 01, 2011
Filed:
Nov. 30, 2006
Stephan Hatscher, Syke, DE;
Michael Hesse, Worms, DE;
Tobias Wabnitz, Mannheim, DE;
Stefan Kashammer, Schifferstadt, DE;
Rolf Pinkos, Bad Duerkheim, DE;
Stephan Hatscher, Syke, DE;
Michael Hesse, Worms, DE;
Tobias Wabnitz, Mannheim, DE;
Stefan Kashammer, Schifferstadt, DE;
Rolf Pinkos, Bad Duerkheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention provides a catalyst comprising a mixture of at least one acid-activated sheet silicate with a transition metal oxide of groups 8 and/or 9 of the Periodic Table of the Elements and also a process for preparing polytetrahydrofuran, polytetrahydrofuran copolymers, diesters or monoesters of these polymers, in which tetrahydrofuran is polymerized in the presence of at least one telogen and/or comonomer over such a catalyst.