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:
May. 01, 2012
Filed:
Mar. 09, 2010
Oemer Uensal, Mainz, DE;
Joachim Kiefer, Losheim am See, DE;
Jochen Baurmeister, Eppstein, DE;
Jürgen Pawlik, Frankfurt, DE;
Werner Kraus, Niedernhausen, DE;
Frauke Jordt, Eppstein, DE;
Oemer Uensal, Mainz, DE;
Joachim Kiefer, Losheim am See, DE;
Jochen Baurmeister, Eppstein, DE;
Jürgen Pawlik, Frankfurt, DE;
Werner Kraus, Niedernhausen, DE;
Frauke Jordt, Eppstein, DE;
BASF Fuel Cell GmbH, Frankfurt, DE;
Abstract
The present invention relates to an acid-doped polymer membrane based on polyazoles. The acid-doped polymer membrane can be used in a variety of applications because of its excellent mechanical properties and is useful as polymer electrolyte membrane (PEM) in PEM fuel cells. A doped polymer membrane based on polyazoles is obtained by a process comprising the steps of: A) casting a film using a solution of polymers based on polyazoles in a polar, aprotic organic solvent; B) drying the film formed in step A) until it is self-supporting; C) treating the film obtained in step B) with a treatment liquid at a temperature in the range from room temperature to the boiling point of the treatment liquid; D) drying and/or dabbing the film treated according to step C) to remove the treatment liquid from step C); and E) doping the film treated according to step D) with a doping agent.