| abstract |
An ethylene-α-olefin copolymer having good moldability, in which a molded product having excellent optical properties is obtained by a resin composition with a conventional ethylene-α-olefin copolymer. To provide an olefin copolymer, a resin composition of the copolymer and a conventional ethylene-α-olefin copolymer, and a molded body comprising the resin composition. An ethylene unit and an α-olefin unit having 3 to 20 carbon atoms, a melt flow rate (MFR) of 0.01 to 4 g / 10 minutes, a density of 890 to 970 kg / m 3 , and flow activity. Ethylene-α-olefin polymer 3 × MFR −0.75 +1.1>τ> 1 satisfying the relationship of the following formula (1) with a chemical energy of 50 kJ / mol or more, a molecular weight distribution of 3 or more, and a characteristic relaxation time (τ) .3xMFR -0.5 +1.4 Formula (1) [Selection figure] None |