PROBLEM TO BE SOLVED: To provide a multi-component copolymer used for producing a crosslinked rubber composition and a rubber product having excellent strength (cracking resistance), a rubber composition comprising the multi-component copolymer, a crosslinked rubber composition obtained by crosslinking the rubber composition, and a rubber product and a tire prepared with the rubber composition or the crosslinked rubber composition.SOLUTION: The present invention provides a multi-component copolymer having a conjugated diene unit, a non-conjugated olefin unit, and an aromatic vinyl unit. The multi-component copolymer has its main chain consisting of only an acyclic structure, the highest melting point exceeding 100°C, and a cis 1,4-bond content of 50% or more in the whole conjugated diene unit.SELECTED DRAWING: None

    【課題】強度(耐亀裂性)に優れた架橋ゴム組成物及びゴム製品を製造するために使用される多元共重合体、前記多元共重合体を含むゴム組成物、該ゴム組成物を架橋して得られた架橋ゴム組成物、並びに、前記ゴム組成物又は前記架橋ゴム組成物を用いたゴム製品及びタイヤを提供すること。【解決手段】共役ジエン単位と、非共役オレフィン単位と、芳香族ビニル単位とを含有する多元共重合体であって、主鎖が非環状構造のみからなり、最も高い融点が100℃を超え、かつ、前記共役ジエン単位全体におけるシス1,4−結合含有量が50%以上である多元共重合体。【選択図】なし


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    Title :

    MULTI-COMPONENT COPOLYMER, RUBBER COMPOSITION, CROSSLINKED RUBBER COMPOSITION, RUBBER PRODUCT, AND TIRE


    Additional title:

    多元共重合体、ゴム組成物、架橋ゴム組成物、ゴム製品、及びタイヤ


    Contributors:

    Publication date :

    2017-04-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / B60C VEHICLE TYRES , Fahrzeugreifen / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen



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