| 摘要 |
PROBLEM TO BE SOLVED: To provide a prepolymerized Ziegler-Natta catalyst that can polymerize an olefin, an olefin polymerization method using the same and the polyolefin that is produced by the method. SOLUTION: A Ziegler-Natta catalyst is pre-polymerized by usingα-olefin and vinyl cyclic saturated hydrocarbon stepwise, then the prepolymerized Ziegler catalyst is used to polymerize olefin in high yield. The resultant polyolefin can retain high stereoregularity, high volume density, and high crystallizability. COPYRIGHT: (C)2008,JPO&INPIT
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