| 摘要 |
<p>A process for polymerizing an α-olefin, which comprises conducting polymerization of the α-olefin using a catalyst formed by previously bringing a highly active titanium solid catalyst component, a catalyst component of an organo-metallic compound of a group I to III metal of the periodic table, a catalyst component of an organic halogen compound or of a transition metal compound, and a catalyst component of an organo-silicone compound or of a sterically hindered amine into contact with each other in an inert solvent in the absence of the α-olefin, or a catalyst formed by conducting preliminary polymerization of the α-olefin in the presence of the above-described catalyst wherein the final component is optional. This process provides polymers having excellent stereospecificity with the catalyst showing high activity, thus attaining industrial advantages.</p> |
