| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyethylene composition having excellent molding processability and impact strength and excellent large-sized blow molding with improved practical characteristics such as low gelation properties and heat weldability in pinchoff parts. SOLUTION: This polyethylene composition comprises a polyethylene (A) and a polyethylene (B). The polyethylene (A) is obtained by polymerization using a chromium compound-supported catalyst and has 3-500 g/10 min high load melt index (HLMFR) and 950-980 kg/m<SP>3</SP>density. The polyethylene (B) is prepared by polymerization using a Ziegler catalyst or a metallocene catalyst and has 0.01-15 g/10 min HLMFR and 910-940 kg/cm<SP>3</SP>density. The content of the polyethylene (B) is 30-75 wt.% and the HLMFR of the polyethylene (B) is 0.8-0.001 of that of the polyethylene (A). COPYRIGHT: (C)2003,JPO
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