Patent ID: 8273277
Filing Date: 2012-09-25
Classification: B01D,C08G,C08J,H01M,Y02E,Y02P

Abstract:
1. A method for producing a proton-conducting, polyazole-containing membrane which comprises A) extruding a composition containing 70 wt. % to 99.5 wt. % of polyphosphoric acid and 0.5 wt, % to 30 wt. % of at least one polyazole through a slot, said composition and exhibiting a solution viscosity in the range from 10 Pas to 1000 Pa·s, measured to DIN 53018 at the temperature at the slot, said temperature being in the range from 120° C. to 300° C. during production of the membrane, and B) solidifying the composition through cooling and/or hydrolysis and/or cross-linking.