abstract |
Provided are a multi-component copolymer, a rubber composition, a crosslinked rubber composition, and a rubber article, which are excellent in low heat buildup and wear resistance. The present invention provides a multi-component copolymer containing a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit, wherein the non-conjugated olefin unit and / or Alternatively, the peak top molecular weight of the chain portion containing an aromatic vinyl unit is 1,000 or more and less than 40,000, a multi-component copolymer, a rubber composition containing the multi-component copolymer, and the rubber composition Provided are a crosslinked rubber composition obtained by crosslinking, and a rubber article containing the crosslinked rubber composition. [Selection figure] None |