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. 16, 2010
Filed:
Feb. 16, 2007
Joachim Petersen, Flieden, DE;
Jochen Baurmeister, Eppstein, DE;
Oemer Uensal, Mainz, DE;
Frauke Jordt, Eppstein, DE;
Joachim Kiefer, Losheim am See, DE;
Joachim Petersen, Flieden, DE;
Jochen Baurmeister, Eppstein, DE;
Oemer Uensal, Mainz, DE;
Frauke Jordt, Eppstein, DE;
Joachim Kiefer, Losheim am See, DE;
BASF Fuel Cell GmbH, Frankfurt, DE;
Abstract
The present invention relates to an asymmetric polymer film, in particular based on polazoles, a method for the production of the same and its use. The polyazole-based asymmetric polymer film according to the invention has a smooth and a rough side and enables, on account of its asymmetric structure, rapid and homogeneous doping with acids to form a proton-conducting membrane. The polyazole-based asymmetric polymer film according to the invention can be used in diverse ways on account of its excellent chemical, thermal and mechanical properties and is particularly suitable for the production of polymer electrolyte membranes (PEM) for so-called PEM fuel cells.