| abstract |
N-(3,5-di-alkyl-4-hydroxy)phenyl norbornene dicarboximides useful for inhibiting oxidation of polymeric compositions. Such oxidation inhibitor can be provided as a monomer, oligomer or homopolymer or incorporated into copolymers or grafted onto polymers. Preferred oxidation inhibitors are based on N-(3,5-di-t-butyl-4-hydroxy)phenyl norbornene dicarboximide. Especially useful are cyclic olefin copolymers, e.g. of antioxidant monomer and norbornene dicarboximides. |