| abstract |
An object of the present invention is to obtain an ethylene copolymer having a uniform distribution of comonomer units and a wide molecular weight distribution along a polymer chain. (A) In a TREF (temperature rise elution fractionation) analysis, an amount equal to at least 90% by weight of the copolymer is eluted with a temperature difference of less than 50 ° C. and (b) Mw / Mn> 3 (Mw is Weight average molecular weight, Mn is number average molecular weight, both measured by GPC), ethylene unit content between 80 and 99 mol%, α-olefin, cycloolefin and between 1 and 20 mol% / or has derived units content from polyene monomers, (a) formula CH 2 = CH-CH 2 R (R is an alkyl group having a hydrogen, or a linear, branched or cyclic having 1 to 20 carbon atoms ), (B) an ethylene copolymer with at least one comonomer selected from (c) cycloolefin and (c) polyene. [Selection] Figure 1 |