| 摘要 |
PROBLEM TO BE SOLVED: To provide an ethylene-α-olefin copolymer showing excellent in balanced melt tension, extrusion load on extrusion molding and mechanical strength. SOLUTION: The ethylene-α-olefin copolymer includes an ethylene-based monomer unit and a 3C-20Cα-olefin-based monomer unit, having a density (d) of 850-970 kg/m<SP>3</SP>, having a melt flow rate (MFR) of 0.01-100 g/10 minutes, showing a bimodal molecular weight distribution, having a ratio (Mw/Mn) of weight-average molecular weight (Mw) to number-average molecular weight (Mn) of 31-70, and showing a number of long-chain branchings (N<SB>LCB</SB>) carrying 5 or more carbon atoms, that is measured by<SP>13</SP>C-NMR, of 0.7-1.0 per 1,000 carbon atoms. COPYRIGHT: (C)2011,JPO&INPIT |
