abstract |
Provided is a polymer that contributes to the improvement of the durability and weather resistance of rubber compositions or rubber products such as a tire, and has low crystallinity. Disclosed is a multicomponent copolymer comprising a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit, wherein the multicomponent copolymer has a main chain consisting only of an acyclic structure, and the content of cis-1,4 bonds in the entire conjugated diene unit is 50% or more. |