abstract |
The invention includes new, with at least sulfinate groups (P- (SO¶2¶) ¶n¶X, X = 1- (n = 1), 2- (n = 2) or 3- (n = 3) valent metal cation or H · + · or ammonium ion NR¶4¶ · + · with R = alkyl, aryl, H) containing polymers or oligomers, which are obtained by complete or partial reduction of at least SO¶2¶Y groups (Y = F, C1 , Br, I, OR, NR¶2¶ (R = alkyl and / or aryl and / or H), N-imidazolyl, N-pyrazolyl) containing polymers or oligomers using suitable reducing agents in suspension or in solution. DOLLAR A is also claimed for polymers and polymer (blend) membranes which are obtained by further reaction of the sulfinated polymers obtained, in particular by alkylation of the sulfinate group with mono-, di- or oligofunctional electrophiles. Processes for the production of the sulfinated polymers and for the further reaction of the sulfinated polymers with electrophiles by S-alkylation are also claimed. |