| 摘要 |
<p>The catalyst for polymerizing α-olefin comprises a component of a carrier having provided thereon a transition metal compound and an aluminoxane. The carrier is one having been treated with an organometallic compound, a halogen-containing silicon compound or an aluminoxane or an olefin prepolymer prepared by using these two components. The catalyst enables production of a spherical polymer having good particle size distribution and excellent bulk density when employed in slurry polymerization process or gas phase polymerisation process, particularly in the latter process. In addition, the catalyst provides a polymer having a narrow molecular weight distribution and, when applied to copolymerization of two or more olefins, it shows such an excellent polymerization activity that it provides an olefin copolymer having a narrow molecular weight distribution and a narrow composition distribution.</p> |
