ANTIOXIDATIVE PROPERTIES OF POLYMERIC STE RICALLY HINDERED PHENOLS BASED ON N-VINYLPYRROLIDONE COPOLYMERS

The antioxidative activity and the activity with respect to a diphenyl picrylhydrazyl radical of water-soluble polymeric derivatives of steri cally hindered phenols based on the functional copolymers of N-vinylpy rrolidone were studied. It was shown that the rate of the reaction bet ween the free radicals and the given polymeric derivatives is determin ed by the type of polymer-phenol bond and the nature of the reaction m edium. It was found that the molecular masses of the studied polymers and the content of phenol in these polymers insignificantly affect the rate of the radical reaction.