Polyelectrolytic gel

A polyelectrolytic gel in which a polymer component is swollen with a nonaqueous solvent containing an electrolyte dissolved therein, the polymer component being a crosslinked polymer having a nitrogen-containing cationic functional group and obtained by polymerizing 100 parts by weight of an unsaturated monomer free of nitrogen-containing cationic functional groups and 1 to 100 parts by weight of an unsaturated monomer having a nitrogen-containing cationic functional group to produce a non-crosslinked polymer having at least one reactive functional group selected from the group consisting of hydroxyl, carboxyl, glycidyl, vinyl, isocyanate and methylol, and crosslinking the resulting non-crosslinked polymer with 1 to 50 parts by weight of a crosslinking agent having, per molecule, at least two functional groups selected from the group consisting of hydroxyl, carboxyl, glycidyl, vinyl, isocyanate and methylol, the functional groups of the crosslinking agent being complementarily reactive to the reactive functional group of the non-crosslinked polymer.

A polyelectrolytic gel in which a polymer component is swollen with a nonaqueous solvent containing an electrolyte dissolved therein, the polymer component being a mixture of a non-crosslinked polymer having a nitrogen-containing cationic functional group and a crosslinked polymer free of nitrogen-containing cationic functional groups, wherein the crosslinked polymer free of nitrogen-containing cationic functional groups being obtained by polymerizing and crosslinking 10 to 200 parts by weight of a polymerizable compound having, per molecule, at least two crosslinkable functional groups selected from the group consisting of vinyl, glycidyl, isocyanate, hydroxyl and methylol, in the presence of 100 parts by weight of a non-crosslinked polymer having a nitrogen-containing cationic functional group.