It is an object of the disclosure to provide a production method for a copolymer in which a copolymer with a high content of cis-1,4 bonds of a conjugated diene portion can be obtained at a high yield even when a cyclic olefin compound is used as a monomer. In order to achieve the object, the present disclosure includes a step of polymerizing a conjugated diene compound and a cyclic olefin compound in the presence of a catalyst composition containing a rare-earth element compound represented by the following formula (I), at least one compound selected from the group consisting of an ionic compound and a halogen compound, a compound represented by the following formula (II), and a coordination compound that can be a ligand:        M-(AQ1)(AQ2)(AQ3) ...     (I)        YR1aR2bR3c...     (II)


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    Titel :

    PRODUCTION METHOD FOR COPOLYMER, COPOLYMER, RUBBER COMPOSITION, AND TIRE


    Beteiligte:
    TAKANO SHIGENAGA (Autor:in) / KAITA SHOJIRO (Autor:in) / TARDIF OLIVIER (Autor:in)

    Erscheinungsdatum :

    04.03.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    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



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