| abstract |
Ar einen Phenylenring mit p- und/oder m-Bindungen, Ar' eine Phenylen-, Naphthylen-, Biphenylen-, Anthrylen- oder eine andere zweiwertige aromatische Einheit, X, N und M unabhängig voneinander 0 oder 1, Y 0, 1, 2 oder 3, P 1, 2, 3 oder 4 To produce a polymer electrolyte membrane from sulfonated aromatic polyether ketone, an aromatic polyether ketone of the general formula (I) in which Ar is a phenylene ring with p and / or m bonds, Ar 'is a phenylene, naphthylene, biphenylene, anthrylene or other divalent aromatic unit, X, N and M independently of one another 0 or 1, Y 0, 1, 2 or 3, P 1, 2, 3 or 4 n n n mean sulfonated and the sulfonic acid isolated. In the sulfonic acid, at least 5% of the sulfonic acid groups present are converted into sulfonyl chloride groups and these are reacted with an amine which is at least has at least one crosslinkable substituent or another functional group, and then hydrolyzed unreacted sulfonyl chloride groups. The resulting aromatic sulfonic acid amide is isolated and dissolved in an organic solvent, the solution is processed into a film and then the crosslinkable substituents present in the film are crosslinked.n n n In special cases, the crosslinkable substituents can be dispensed with. In this case, sulfonated polyether ketone is processed from solution into a film. |