A polymeric composition comprising a plurality of metallic cross-linked monomers in the presence of a stabilizing agent, wherein said monomers comprise: a) a carboxylic acryloyl monomer of formula (I): wherein m is an integer from 1 to 16; and R 1 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; b) a sulfonic acryloyl monomer of formula (II): wherein q is an integer of 1 to 16; and R 2 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; c) an amine acryloyl monomer of formula (III): wherein p is an integer of 1 to 12; R 3 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; and R 4 is an alkyl; d) a hydroxyl acryloyl monomer of formula (IV): wherein r is an integer of 1 to 12; and R 5 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; e) an alkyl acryloyl monomer of formula (V): wherein s is an integer of 0 to 6; R 6 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; and R 7 is alkyl; and f) a polyalkylene hydroxyl acryloyl monomer of formula (VI): wherein n is an integer of 2 to 100; and R 8 is independently selected from the group consisting of hydrogen, alkyl and alkenyl, such that all of monomer a), monomer b), monomer c), monomer d), monomer e) and monomer f) are present in said polymeric composition and wherein the stabilizing agent is a zwitterionic monomer. a) a carboxylic acryloyl monomer of formula (I): wherein m is an integer from 1 to 16; and R 1 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; wherein m is an integer from 1 to 16; and R 1 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; b) a sulfonic acryloyl monomer of formula (II): wherein q is an integer of 1 to 16; and R 2 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; wherein q is an integer of 1 to 16; and R 2 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; c) an amine acryloyl monomer of formula (III): wherein p is an integer of 1 to 12; R 3 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; and R 4 is an alkyl; wherein p is an integer of 1 to 12; R 3 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; and R 4 is an alkyl; d) a hydroxyl acryloyl monomer of formula (IV): wherein r is an integer of 1 to 12; and R 5 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; wherein r is an integer of 1 to 12; and R 5 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; e) an alkyl acryloyl monomer of formula (V): wherein s is an integer of 0 to 6; R 6 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; and R 7 is alkyl; and wherein s is an integer of 0 to 6; R 6 is independently selected from the group consisting of hydrogen, alkyl and alkenyl; and R 7 is alkyl; and f) a polyalkylene hydroxyl acryloyl monomer of formula (VI): wherein n is an integer of 2 to 100; and R 8 is independently selected from the group consisting of hydrogen, alkyl and alkenyl, such that all of monomer a), monomer b), monomer c), monomer d), monomer e) and monomer f) are present in said polymeric composition and wherein the stabilizing agent is a zwitterionic monomer. wherein n is an integer of 2 to 100; and R 8 is independently selected from the group consisting of hydrogen, alkyl and alkenyl, such that all of monomer a), monomer b), monomer c), monomer d), monomer e) and monomer f) are present in said polymeric composition and wherein the stabilizing agent is a zwitterionic monomer. <EOS>