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:
Nov. 04, 2008
Filed:
Jul. 02, 2003
Klaus Muellen, Köln, DE;
Markus Klapper, Mainz, DE;
Vesselin Sinigersky, Sofia, BG;
Weicheng Wu, Mainz, DE;
Oemer Uensal, Mainz, DE;
Jochen Baurmeister, Eppstein, DE;
Klaus Muellen, Köln, DE;
Markus Klapper, Mainz, DE;
Vesselin Sinigersky, Sofia, BG;
Weicheng Wu, Mainz, DE;
Oemer Uensal, Mainz, DE;
Jochen Baurmeister, Eppstein, DE;
BASF Fuel Cell GmbH, Frankfurt am Main, DE;
Abstract
The present invention relates to functionalized polyazoles comprising recurring imidazole units of the general formula where the radicals Ar, Arand Arare tetravalent, divalent or trivalent aromatic or heteroaromatic groups, where Rand Rare each, independently of one another, a hydrogen atom or a group having from 1 to 20 carbon atoms, characterized in that the polyazole is soluble in organic solvents. Furthermore, the present invention relates to intermediates and to a process for preparing the polyazoles. Furthermore, the present invention describes polymer electrolyte membranes and fuel cells in which the polyazoles of the invention are present.