A SINGLE POT PROCESS FOR POLAR MODIFICATION ON POLYOLEFINIC ELASTOMERS VIA CONTROLLED GRAFT COPOLYMERIZATION

摘要

A one step process of preparing polar polyolefinic elastomers by graft copolymerization comprising the steps of adding ligand dissolved in small amount of pure solvent; adding purified suitable transition metal halide as catalyst to the ligand; dissolving polyolefin and thermal initiator in solvent and introducing to the reaction tube under continuous stirring; allowing nitrogen purging for several minutes through the reaction mixture; emerging the reaction tube in an oil bath preheated at desired temperature; initiating the grafting reaction by adding (meth) acrylates; measuring the grafting percent gravimetrically by taking out aliquot in specific time intervals; and purifying the grafted polyolefins by re-precipitating from methanol and a grafted polyolefinic elastomer manufactured by the process thereof.