MEMBRANES COMPRISING SULFONATED POLYETHER KETONE AND ANOTHERPOLYMER, PROCESS FOR THEIR PRODUCTION, AND THEIR USE

摘要

The invention relates to membranes containing 30-99.5 wt. % of a sulphonated , strictly alternating polyetherketone with repeating units of formula (I) -AR -O- Ar'-CO-, wherein Ar and Ar' are, independently from each other, bivalent aromatic radicals, with an ion exchanger capacity of 1.3-4.0 meg (-SO3H/g) (polymer) and 0.5-70 wt. % of a partially fluorinated, non perfluorinated or perfluorinated polymer (B). The membranes can be used in fuel cells.