| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly active catalyst for polymerization of olefin that produces a polyolefin having high melt tension, excellent mechanical strength, reduced neck-in in T-die molding, and excellent in properties of particle. SOLUTION: The catalyst for polymerization of olefin is obtained by prepolymerizing ethylene or ethylene/α-olefin by using a solid catalyst component which is obtained by contacting (A) a compound of a transition metal of group 4 of the periodic table wherein the compound has at least one ligand having a cyclopentadienyl skeleton, (B) an organic aluminumoxy compound and (C) a multi-functional organic halide, with a solid carrier to obtain 0.01-1000g of polymers per 1g of the solid catalyst component wherein the polymers have≥600×10<SP>4</SP>of Z-average molecular weight measured by gel-permeation chromatography, and a die swell ratio of≥1.4. COPYRIGHT: (C)2004,JPO&NCIPI
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