Patent · US Expired

Functionalized polyazoles, method for the production thereof, and use thereof

US7445864B2 · kind B2 · utility

2Cited by

32References

18Claims

0Family size

Assignee

BASF FUEL CELL GMBH · DE

Inventors

Klaus Muellen · Cologne, DE
Markus Klapper · Mainz, DE
Vesselin Sinigersky · Sofia, BG
Weicheng Wu · Mainz, DE
Oemer Uensal · Mainz, DE
Jochen Baurmeister · Eppstein, DE

Key dates

Filing date	Jul 2, 2003
Grant date	Nov 4, 2008
Priority date	—
Expiry date	Mar 1, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The present invention relates to functionalized polyazoles comprising recurring imidazole units of the general formulawhere the radicals Ar, Ar1 and Ar2 are tetravalent, divalent or trivalent aromatic or heteroaromatic groups, where R1 and R2 are 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.