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    • 47. 发明专利
    • Method for producing conjugated diene-based copolymer rubber
    • 生产共轭二烯基共聚物橡胶的方法
    • JP2006169381A
    • 2006-06-29
    • JP2004363990
    • 2004-12-16
    • Jsr CorpJsr株式会社
    • SHIBATA MASAHIROTADAKI TOSHIHIRO
    • C08F236/10C08C19/25C08F2/00C08F212/00
    • Y02T10/862
    • PROBLEM TO BE SOLVED: To provide a method for producing a conjugated diene-based copolymer rubber having good processability and exhibiting sufficient hardness even after vulcanization, capable of obtaining a rubber composition with low rolling resistance, which can be produced in a short required polymerization time equal to that of a conventional process. SOLUTION: This method for producing the conjugated diene-based copolymer rubber comprises the steps of initiating copolymerization reaction in a reaction system comprising a first conjugated diene compound and a first aromatic vinyl compound, thereafter adding a second conjugated diene compound and a second aromatic vinyl compound as needed, and adding a modifier after the completion of copolymerization reaction. At an intermediate stage where the polymerization conversion rate is in a range of 30% or more but less than 90%, a first polyfunctional monomer is added to the reaction system. COPYRIGHT: (C)2006,JPO&NCIPI
    • 待解决的问题:为了提供即使在硫化后具有良好的加工性和显示出足够的硬度的共轭二烯系共聚物橡胶的制造方法,能够得到滚动阻力低的橡胶组合物,其可以短时间生产 所需的聚合时间等于常规方法的时间。 解决方案:该共轭二烯系共聚物橡胶的制造方法包括在包含第一共轭二烯化合物和第一芳族乙烯基化合物的反应体系中引发共聚反应的步骤,然后加入第二共轭二烯化合物和第二共轭二烯化合物 芳族乙烯基化合物,并在共聚反应完成后加入改性剂。 在聚合转化率为30%以上且小于90%的中间阶段,向反应体系中添加第一多官能单体。 版权所有(C)2006,JPO&NCIPI