FLUORED POLYMERS AND MEMBRANES PREPARED FROM SUCH POLYMERS, IN PARTICULAR FOR FUEL BATTERIES AND PEACEDIMENT OF SYNTHESIS OF SUCH POLYMERS.

摘要

Fluorinated polymer comprising at least one repetitive motive of formula (I): ** (See formula) ** in which: - groups X and Y, identical or different, represent H or F; - the group Z represents F or a perfluorinated alkyl group; - group W represents CO2; - the group Ar represents a divalent group comprising at least one carbon aromatic cycle optionally substituted; - group Q represents a simple link, (CF2) n with 1 = n = 10, or C2F4OC2F4; - group G represents a cation exchange group, preferably selected from: - SO2R1, representing R1OH, F or Cl; or - P (= O) (OR2) 2, representing R2H or an optionally substituted alkyl group; or - CO2H and having an ion exchange capacity greater than or equal to 0.5 meq / g of polymer.