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. 19, 2002
Filed:
Nov. 09, 1999
Applicant:
Inventors:
Karsten Eller, Ludwigshafen, DE;
Frank Stein, Bad Dürkheim, DE;
Christoph Sigwart, Schriesheim, DE;
Rainer Becker, Bad Dürkheim, DE;
Klaus-Dieter Plitzko, Limburgerhof, DE;
Rolf Fischer, Heidelberg, DE;
Ulrich Müller, Neustadt, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 5/968 ; C08G 6/510 ;
U.S. Cl.
CPC ...
C08G 5/968 ; C08G 6/510 ;
Abstract
A process for polymerizing cyclic ethers over a heterogeneous catalyst comprises using a heterogeneous catalyst comprising one or more pillared interlayered clays (PILCs).