There is disclosed a method for grafting C-nitro compounds onto preformed polymers. In the method a hindered C-nitro compound containing at least one polymerizable unsaturated group is reacted with a polymer in the presence of free radicals to thereby graft the C-nitro compound onto the polymer. The process has the advantages of being convenient, economical and applicable to conventional polymer processing steps. In a preferred embodiment, polymer stabilizing additives are prepared by the process in the form of masterbatches of polymer containing high concentrations of C-nitro compounds grafted thereon.
本发明公开了一种将 C-
硝基化合物接枝到预成型聚合物上的方法。在该方法中,含有至少一个可聚合不饱和基团的受阻 C-
硝基化合物在自由基存在下与聚合物反应,从而将 C-
硝基化合物接枝到聚合物上。该工艺具有方便、经济和适用于常规聚合物加工步骤等优点。在一个优选的实施方案中,通过该工艺制备的聚合物稳定添加剂是含有高浓度接枝 C-
硝基化合物的聚合物母料。