ETHYLENE/α-OLEFIN COPOLYMER AND LUBRICATING OIL

The purpose of the present invention is to provide an ethylene/α-olefin copolymer which has high randomness, while having a small double bond amount in the copolymer. An ethylene/α-olefin copolymer according to the present invention is obtained by copolymerizing ethylene and an α-olefin having 3-20 carbon atoms in the presence of an olefin polymerization catalyst that contains a crosslinked metallocene compound (A) represented by formula [I] and at least one compound (B) which is selected from among organic metal compounds (B-1), organic aluminumoxy compounds (B-2) and compounds (B-3) that are reacted with the crosslinked metallocene compound (A) and form an ion pair. This ethylene/α-olefin copolymer has a specific weight average molecular weight, a specific molecular weight distribution, a specific glass transition temperature and a specific B value.