MULTICOMPONENT COPOLYMER, RUBBER COMPOSITION, AND RUBBER ARTICLE

摘要

An object of the present disclosure is to provide a multi-component copolymer being excellent in low-heat generation property and wear resistance. The multi-component copolymer contains a conjugated diene unit, a non-conjugated olefin unit and an aromatic vinyl unit, wherein: a main chain thereof consists of noncyclic structures, a content of the aromatic vinyl unit is 2 mol % or less, and melting enthalpy of a non-conjugated olefin portion as a chain unit constituted exclusively of the non-conjugated olefin unit is 25 J/g or less.