Patent ID: 8476323

Claim:
A fluorocarbon polymer material which comprises a fluorinated backbone and at least one pendant chain having a quaternary ammonium group, wherein the backbone comprises a unit of the following general formula: wherein: Z is a quaternary ammonium group, Y 1 and Y 2 are each independently an oxygen heteroatom or a sulphur heteroatom, A is a fluorinated or perfluorinated straight chain having from 2 to 6 carbon atoms, R 1 represents a phenyl or aryl group or a group of the following formula: —CR 2 R 3 — (2) wherein: R 2 and R 3 are identical or different and each selected independently from the group consisting of a straight or branched alkyl group, optionally substituted by one or more halogens, R 4 is selected from the group consisting of a hydrogen atom, a straight or branched, cyclic or acyclic, alkyl or halogenated alkyl group, and a group represented by the following formula: m is an integer comprised between 0 and 10; m′, n and r are integers, each independently equal to 0 or 1; and s is equal to 0 or 1, provided that when s is equal 0, then R 4 is different from the hydrogen atom.