| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composition desirable for the production of blow moldings such as bottles by selecting a composition comprising an ethylene/α-olefin copolymer having a density, a melt flow rate, etc., in specified ranges, a high-density polyethylene and a high-pressure process low-density polyethylene in a specified ratio and having a melt tension of a specified value or above. SOLUTION: There is provided a composition comprising 18-80 wt.% ethylene/α-olefin copolymer (A), 18-80 wt.% high-density polyethylene (B) and 2-40 wt.% high-pressure process low-density polyethylene (C) and having a melt tension of 2.5 g or above at 190 deg.C. Component A has a density of 0.880-0.960, a melt flow rate (at 190 deg.C under a load of 2.16 kg) (MFR2.16 ) of 3-200, an MFR (at 190 deg.C under a load of 10.0 kg) (MFR10.0 )/MFR2.16 ratio of 1-20, and an Mw/Mn ratio of 2.0-4.0, component B has a density of 0.935-0.970, and an MFR2.16 of 0.01-20, and component C has a density of 0.915-0.935 and an MFR2.16 of 0.01-30. |
