Patent ID: 8420069

Claim:
A polymeric material comprising: (a) at least one divalent unit of Formula (I) or a salt thereof; (b) at least one divalent unit of Formula (II) or a salt thereof; and (c) at least one divalent unit of Formula (III) or salt thereof; wherein each D is independently hydrogen or an alkyl; each Q is independently oxy or —NR 1 —where R 1 is selected from a hydrogen, alkyl, aryl, or aralkyl; each R 2 is independently an alkylene; R 3 is an alkyl; R 4 is hydrogen, an alkyl, or a part of a silicone; each R 5 is independently an hydroxyl, alkyl, perfluoroalkyl, aryl, aralkyl, alkoxy, or part of a silicone; each R 6 is independently an alkyl, aryl, or aralkyl; R 7 is an alkyl; L 1 is a first linking group comprising an alkylene or heteroalkylene; L 2 is a second linking group comprising an alkylene or heteroalkylene; n is an integer greater than 1; and X − is an anion.