Graft polymerization of glycidyl phenyl ether (GPE) and alternating graft copolymerization of GPE-succinic anhydride (SA) onto a polymer-supported aminimide were examined. The polymer-supported aminimide was synthesized by radical polymerization of 1,1-dimethyl-1-(2-hydroxy-3-(4-vinylbenzyloxy)propyl)amine 2-benzoylimide, which was prepared by the reaction of methyl benzoate with equimolar amounts of 1,1-dimethyl hydrazine and 4-glycidylmethylstyrene. This aminimide could initiate the polymerization of GPE and alternating copolymerization of GPE with SA to give the corresponding graft copolymers.