Patent ID: 7094469

Claim:
An article formed from a substrate comprising a fluorine-containing polymer having its surface modified with an immobilized fluorocarbon polymeric composition having hydrophilic functional groups derived from at least one monomer of the formula: [T—SO 2 Y—SO 2 T′]M + wherein: T and T′ are identical or different and each comprise a perfluorinated organic radical bearing at least one active polymerization function; M + comprises an inorganic or organic cation; Y comprises N or CQ; Q comprises H, CN, F, SO 2 R 3 , perfluorinated C 1-20 alkyl, perfluorinated C 1-20 aryl, or perfluorinated C 1-20 alkylene, and R 3 comprises perfluorinated C 1-20 alkyl, perfluorinated C 1-20 aryl, or perfluorinated C 1-20 alkylene.