| 摘要 |
A molding resin having improved processability is disclosed, comprising a copolymer of ethylene and an alpha -olefin having 3 to 12 carbon atoms and having the following properties (a) a weight average molecular weight Mw to number average molecular weight Mn ratio (Mw/Mn) of 3 or less as determined by gel permeation chromatography; (b) a density of 0.850 to 0.980 g/cm<3>; (c) a melt flow rate of 0.5 to 5 g/10 min as measured at 190 DEG C under a load of 2,160 g according to JIS K7210, Condition 4; (d) a slope S of storage modulus G' in a frequency region of from the frequency (fc) at which storage modulus G' and loss modulus G'' agree with each other to fc/10, which is obtained from the frequency dependence of dynamic viscoelasticity, i.e., DELTA log G'/ DELTA log f, of more than 0.70 and less than 0.90; and (e) an activation energy of flow DELTA H of 35 kJ/mol or less as obtained at 160 to 220 DEG C. |
