Patent ID: 7288600

Claim:
A crosslinked fluorocarbon polymeric composition having hydrophilic functional groups of the formula: covalently bonded through the R f groups, each to a CY group of a fluorocarbon polymeric composition of the formula: wherein A is a polymeric group derived from at least one fluorine-containing polymerizable monomer, n is an integer that can be 1 or greater than 1; m is an integer of at least 1 and Y is hydrogen or halogen wherein at least one Y is a fluorine; T is a carbonyl or sulfonyl group; R f is a C 1 -C 20 linear, cyclic or branched fluoroalkyl group optionally containing one or more oxygen, nitrogen, chlorine, phosphorous, hydrogen and/or sulfur atoms and/or one or more sulfonyl or carbonyl groups, or a sulfonyl or carbonyl-containing fluoropolymeric group, wherein the R f groups can be the same or different; R f ″ and R f ′″ can be the same or different and can be a C 1 -C 20 linear, cyclic or branched fluoroalkyl group optionally containing one or more oxygen, nitrogen, chlorine, phosphorous, hydrogen and/or sulfur atoms and/or one or more sulfonyl or carbonyl groups, or a sulfonyl or carbonyl-containing fluoropolymeric group, optionally connected to another chain of the fluorocarbon polymeric composition having hydrophilic functional groups; Z + is a proton or an organic or an inorganic cation and t can be 0 or 1.