Polymeric composition

摘要

A polymeric composition comprising a free-radical degradable polymer being capable of forming free radicals when subjected to shear energy, heat or radiation, a graftable, hindered amine-derived stable organic free radical, having at least one trapping site and a thermally-reversible bond contribution site, and a complementary, thermally-reversible bond contributor, wherein the graftable, hindered amine-derived stable organic free radical substantially suppresses degradation of the polymer when the polymer is subjected to shear energy, heat or radiation and at a trapping site, being graftable onto the polymer after the polymer forms a free radical.