| http://www.w3.org/ns/prov#value | - In a preferred embodiment, R1 is hydrogen and R2 is a saturated or unsaturated hydrocarbon group having from about 6-24 carbon atoms, Ar is phenyl, M+ is a conjugate acid of the nitrogenous base, the nitrogenous base selected from the group consisting of allyl amine, diallyl amine, triallyl amine, methallyl amine, N-methyl N-allyl amine or 2-(dimethylamino)ethyl acrylate, and mixtures thereof, n1=
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