Ionene graft copolymers and networks containing quaternary ammonium groups as linkages have been prepared by termination of living mono- and bifunctional poly(2-methyl-2-oxazoline) and poly(2-phenyl-2-oxazoline) with poly(dimethylaminoethyl methacrylate). Ionene networks of different density with p,p＇-dichloroxylene and poly(2-alkyloxazoline)s as cross-linkers have been synthesized. The obtained graft and crosslinked copolymers are well defined and with controlled hydrophilic-hydrophobic balance. Viscosity examination and potentiometric titration of some of the products were carried out. Sorption ability towards Cu2+, Ni2+, Mn2+, Fe3+ and anion-exchange capacity were investigated as well. The pH dependence of the sorption of metal ions was evaluated.