| 摘要 |
PROBLEM TO BE SOLVED: To obtain an ethylenic polymer moldable into various kinds of molded products such as a film, a sheet, and excellent in molding properties, particularly in high-speed molding property. SOLUTION: The ethylenic polymer has a density and a molecular weight distribution each in a specific range. A first ethylenic polymer has a ratio (MFR10 /MFR2 ) of a melt flow rate (MFR10 ) under a load of 10 kg to a melt flow rate (MFR2 ) under a load of 2.16 kg in the range of 16.2-50 at 190 deg.C. A second ethylenic polymer has a MFR10 /MFR2 ratio in the range of 12-50. A third ethylenic polymer has an angular velocity ratio ofω2/ω1>=18, whereω1 is an angular velocityω(rad/sec) when a complex elastic modulus G* (dyne/ cm<2> ) is 5.0×10<5> dyne/cm<2> at 200 deg.C andω2 is an angular velocityω(rad/sec) when a complex elastic modulus G* (dyne/cm<2> ) is 2.0×10<6> dyne/cm<2> at 200 deg.C, each obtained in the measurement of the angular velocity dependency of the complex elastic modulus of the polymer. |
