| 主权项 |
1. A copolymer of a conjugated diene compound and a non-conjugated olefin, wherein
the copolymer is obtained by polymerization in the presence of a catalyst represented by the following general formula (I): wherein M represents a lanthanoid element, scandium, or yttrium; CpR each independently represents an unsubstituted or substituted indenyl group; Ra to Rf each independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; at least one of Ra to Rf represents a hydrogen atom; L represents a neutral Lewis base; and w represents an integer of 0 to 3, or the following general formula (XV): wherein M1 represents a lanthanoid element, scandium or yttrium; CpR each independently represents an unsubstituted or substituted indenyl group; RA and RB each independently represents a hydrocarbon group having 1 to 20 carbon atoms, the RA and RB each is μ-coordinated with M1 and Al; and RC and RD each independently represents a hydrocarbon group having 1 to 20 carbon atoms or a hydrogen atom, the conjugated diene unit has a cis-1,4 bond content of greater than 70.5% and the non-conjugated olefin is contained in an amount of 10 mol % or more and 50 mol % or less, and the non-conjugated olefin is an acyclic olefin, and the copolymer has a weight-average molecular weight (Mw) of 50,000 to 600,000. |
