The copper (II) acrylic monomer Cu(aaem)(2) (aaem = 2-acetoacetoxyethyl methacrylate) undergoes high-yield gamma-ray copolymerization with dimethylacrylamide, styrene, and hydroxoethyl methacrylate in the presence of methylene bisacrylamide as crosslinking agent in dimethylformamide. The metalloorganic copolymers are fully characterized. Polymer-protected Cu(II) results in being extremely stable toward a number of reducing agents in different media.