Patent ID: 9109065
Filing Date: 2015-08-18
Classification: C08F,C08K,C08L

Abstract:
1. An ethylene copolymer (X) , which satisfies the following (i) and (ii), comprising structural units derived from a component [A], a component [B] and a component [C] which are ethylene [A], an α-olefin of 3 to 20 carbon atoms [B] and a polyene and/or a cyclic olefin [C], (1) the content of structural units derived from the ethylene [A] being in the range of 50 to 90 mol% in 100 mol% of all the structural units in the copolymer (X); (2) the content of structural units derived from the polyene and/or the cyclic olefin [C]being in the range of 1.0 to 5.0 mol% in 100 mol% of all the structural units in the copolymer (X); (3) the intrinsic viscosity [η] of the ethylene copolymer (X) as measured at 135° C. in a decalin solution being in the range of 7.8 to 13.0 dl/g, (i) the value B obtained from a (in the equation, [P (ii) the loss tangent value, tan δ, as determined by dynamic viscoelasticity measurement at −10° C. and 1 Hz is not more than 0.1.