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    PROCESS FOR PRODUCING CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER, AND RUBBER COMPOSITION
    15.
    发明公开
    PROCESS FOR PRODUCING CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER, AND RUBBER COMPOSITION 有权
    METHOD FOR PRODUCTION基于共轭二烯聚合物高分子的基于共轭二烯和橡胶组合物

    公开(公告)号：EP1958971A1

    公开(公告)日：2008-08-20

    申请号：EP06834001.7

    申请日：2006-12-05

    申请人： JSR Corporation ,  Bridgestone Corporation

    发明人： NAKAMURA, Takahiro ,  TANI, Kouichirou ,  TANAKA, Ryouji ,  SONE, Takuo ,  TADAKI, Toshihiro ,  KURAZUMI, Junko ,  MASAKI, Koji ,  OZAWA, Yoichi

    IPC分类号： C08F36/04 ,  C08F4/54 ,  C08K3/04 ,  C08K3/36 ,  C08L9/00

    CPC分类号： C08L9/00 ,  C08F36/04 ,  C08K3/013 ,  C08F4/545

    摘要： A process for simply and inexpensively producing a conjugated diene polymer with a narrow molecular weight distribution and a high cis-bond content at a low cost is provided. The process comprises a polymerization step, wherein a conjugated diene polymer having a cis-1,4-bond content of 98.5 mass% or more and a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) measured by gel permeation chromatography of 2.5 or less is obtained by carrying out a polymerization reaction in conjugated diene compounds using a catalyst composition containing a rare earth element-containing compound or a reaction product of the rare earth element-containing compound with a Lewis base, an aluminoxane and/or organoaluminum compound, and an iodine-containing compound.

    摘要翻译： 本发明提供一种简单且廉价地制造共轭聚合物用作具有窄分子量分布和以低成本高顺式键含量的过程。 该方法包括聚合工序，worin服务具有质量以上的98.5％的顺式-1,4-键含量和重均分子量（Mw）之比（MW / Mn）为平均分子量数的共轭聚合物 分子量（Mn）通过的2.5或更小的凝胶渗透色谱法测定是通过使用一种催化剂组合物包含一含稀土元素的化合物或含有稀有元素类化合物与反应产物进行共轭服务化合物聚合反应得到 路易斯碱，铝氧烷和/或有机铝化合物和在含碘化合物。

    MODIFIED POLYMERS PREPARED WITH LANTHANIDE-BASED CATALYSTS
    16.
    发明授权
    MODIFIED POLYMERS PREPARED WITH LANTHANIDE-BASED CATALYSTS 有权
    与催化剂制造的改性聚合物基于镧系元素

    公开(公告)号：EP1237935B1

    公开(公告)日：2007-01-24

    申请号：EP00977129.6

    申请日：2000-11-10

    申请人： Bridgestone Corporation

    发明人： OZAWA, Yoichi ,  MILLER, H., Jerrold ,  MASAKI, Koji

    IPC分类号： C08C19/44 ,  C08L19/00 ,  C08F136/04

    CPC分类号： C08L19/006 ,  C08C19/44 ,  C08F136/04 ,  C08F4/545

    摘要： A method for preparing a functionalized polymer comprising the steps of preparing a pseudo-living polymer by polymerizing conjugated diene monomer with a lanthanide-based catalyts, and reacting the pseudo-living polymer with at least one functionalizing agent defined by the formula (I) or (II) where Z is a substituent that will react or interact with organic or inorganic fillers; R1 is a single bond or a divalent organic group; R2 is a monovalent organic group or a divalent organic group that forms a cyclic organic group with R?3 or R4; R3¿ is a single bond, a divalent organic group, or a trivalent organic group that forms a cyclic organic group with R?2, R4, or R5; R4¿ is a monovalent organic group or a divalent organic group that forms a cyclic organic group with R?2, R3, or R5; R5¿ is a monovalent organic group or a divalent organic group that forms a cyclic organic group with R?2, R3, or R4; and R1, R2R3, R4, R5¿ and Z are substituents that will not protonate pseudo-living polymer. Also vulcanizable compositions containing functionalized polymers having filler-interactive substituents that are useful in the production of tires and other industrial products.

    LOW MOLECULAR WEIGHT HIGH-CIS POLYBUTADIENES
    17.
    发明公开
    LOW MOLECULAR WEIGHT HIGH-CIS POLYBUTADIENES 有权
    低分子高顺式含量

    公开(公告)号：EP1189983A2

    公开(公告)日：2002-03-27

    申请号：EP00936192.4

    申请日：2000-05-19

    申请人： Bridgestone Corporation

    发明人： MILLER, H., Jerrold ,  HAMADA, Tatsuro ,  OZAWA, Yoichi ,  PAKDEL, Peyman

    IPC分类号： C08L9/00 ,  C08F36/06 ,  C08F4/54

    CPC分类号： C08L9/00 ,  C08F36/06 ,  Y02T10/862 ,  C08F4/545 ,  C08L2666/08

    摘要： A process for polymerizing 1,3-butadiene into a low molecular weight high-cis polybutadiene is described using a catalyst system comprising: (a) a neodymium-containing compound, (b) an aluminoxane or a trialkyl aluminum compound, (c) an organoaluminum hydride, and (d) a halogen source. A blend of a high molecular weight high-cis polybutadiene and the low molecular weight high-cis polybutadiene is also disclosed for use in pneumatic tire treads. Desirably both the high and the low molecular weight polymers have high cis contents, with the low molecular weight polymer being at least 70 percent cis and the high molecular weight polymer being at least 92 percent cis. Desirably both polymers are made with a neodymium catalyst system. The blends provide a balance of properties including good snow traction, wet traction, and rolling resistance while providing a balance of good physical properties including tension at break, modulus etc.

    RUBBER COMPOSITION
    19.
    发明公开
    RUBBER COMPOSITION 审中-公开
    橡胶组合物

    公开(公告)号：EP2336233A1

    公开(公告)日：2011-06-22

    申请号：EP09819229.7

    申请日：2009-10-07

    申请人： Bridgestone Corporation

    发明人： MATSUSHITA, Junko ,  OZAWA, Yoichi

    IPC分类号： C08L7/00 ,  C08C19/22 ,  C08L9/00

    CPC分类号： C08L7/00 ,  C08C1/04 ,  C08C19/44 ,  C08L9/00 ,  C08L15/00 ,  C08L19/006 ,  C08L2666/08

    摘要： An object of the present invention is to provide a rubber composition which not only realizes sufficiently low heat generation properties but also exhibits more excellent crack growth resistance than the conventional rubber composition. The rubber composition contains in 100 mass% of rubber components thereof: 20-80 mass% of natural rubber in which the total nitrogen content in natural rubber latex is in the range of 0.1 mass% to 0.4 mass% (exclusive of 0.1 mass% and inclusive of 0.4 mass%); and butadiene-based polymer having cis content of 90% or higher.

    摘要翻译： 本发明的一个目的是提供一种橡胶组合物，其不仅实现了足够低的发热性能，而且还表现出比常规橡胶组合物更优异的抗裂纹生长性。 所述橡胶组合物在其100质量％的橡胶组分中含有：天然橡胶胶乳中总氮含量为0.1质量％至0.4质量％（不包括0.1质量％和 包括0.4质量％）; 以及顺式含量为90％以上的丁二烯系聚合物。