Method for producing conjugated diene copolymer rubber

    公开(公告)号:JP5276249B2

    公开(公告)日:2013-08-28

    申请号:JP2004230413

    申请日:2004-08-06

    CPC classification number: Y02T10/862

    Abstract: A process for producing a conjugated diene copolymer rubber which comprises initiating a copolymerization reaction in a reaction system containing a first conjugated diene compound and a first aromatic vinyl compound and completing the reaction, adding a first polyfunctional monomer to the reaction system, optionally further adding a second conjugated diene compound and a second aromatic vinyl compound, and further conducting copolymerization reaction, and adding a modifier to the reaction system to react the modifier with the copolymer. A rubber composition having excellent processability, exhibiting sufficient hardness even after vulcanization, and possessing reduced rolling resistance can be obtained.

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