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    Styrene-butadiene copolymer and rubber composition comprising the copolymer
    8.
    发明授权
    Styrene-butadiene copolymer and rubber composition comprising the copolymer 失效
    苯乙烯 - 丁二烯共聚物和包含共聚物的橡胶组合物

    公开(公告)号：US06472464B1

    公开(公告)日：2002-10-29

    申请号：US08827372

    申请日：1997-03-27

    申请人： Koichi Morita ,  Hajime Kondo ,  Yoichi Ozawa

    发明人： Koichi Morita ,  Hajime Kondo ,  Yoichi Ozawa

    IPC分类号： C08F29300

    CPC分类号： C08F236/10 ,  B60C1/0016 ,  C08C19/44 ,  C08K3/04 ,  C08K3/36 ,  C08L7/00 ,  C08L9/06 ,  C08F4/565 ,  C08L2666/08

    摘要： A styrene-butadiene copolymer having excellent low hysteresis loss characteristic, wet skid resistance, fracture characteristics, and abrasion resistance and a rubber composition comprising the copolymer are disclosed. The styrene-butadiene copolymer has a total styrene content in the range of 33 to 42% by weight of the styrene-butadiene copolymer; a content of styrene sequences having 4 to 20 styrene units in the range of 40 to 65% by weight of the total styrene content, as obtained by measurements by NMR and GPC; a content of styrene sequences having more than 20 styrene units in the range of 5% by weight or less of the total styrene content, as obtained by measurement by GPC; a content of vinyl unit in the range of 30% by mol or less of a butadiene part of the styrene-butadiene copolymer; a sum of the total styrene value and ½ of the content of vinyl units in the range of 46 to 52%; and an inner or end structure having, for example tin-carbon bond. The copolymer and the rubber composition are used for tire treads and the like.

    摘要翻译： 公开了具有优异的低磁滞损耗特性，抗湿滑性，断裂特性和耐磨性的苯乙烯 - 丁二烯共聚物和包含该共聚物的橡胶组合物。 苯乙烯 - 丁二烯共聚物的总苯乙烯含量在苯乙烯 - 丁二烯共聚物的33〜42重量％的范围内; 通过NMR和GPC测量得到的苯乙烯单元的含量为苯乙烯总含量的40至65重量％范围内的4-20个苯乙烯单元; 通过GPC测定得到的苯乙烯单元的含量为苯乙烯含量的5重量％以下的苯乙烯单元多于20个苯乙烯单元的含量; 乙烯基单元的含量在苯乙烯 - 丁二烯共聚物的丁二烯部分的30摩尔％以下的范围内; 乙烯基单元的总苯乙烯值和½的总和在46至52％的范围内; 以及具有例如锡 - 碳键的内部或末端结构。 共聚物和橡胶组合物用于轮胎胎面等。

    Polymer, process for making the polymer, and rubber composition using the polymer
    9.
    发明授权
    Polymer, process for making the polymer, and rubber composition using the polymer 有权
    聚合物，制备聚合物的方法和使用该聚合物的橡胶组合物

    公开(公告)号：US06369167B1

    公开(公告)日：2002-04-09

    申请号：US09453524

    申请日：1999-12-03

    申请人： Koichi Morita ,  Hajime Kondo

    发明人： Koichi Morita ,  Hajime Kondo

    IPC分类号： C08F830

    CPC分类号： C08C19/44 ,  C08L19/006

    摘要： The object of the present invention is to provide a modified diene polymer capable of creating good reinforcing characteristics and filler dispersing effect independently of the kinds of the filler as well as a process for making the polymer and to provide a rubber composition having good fracture characteristics, wear resistance, and low exothermicity without the impairment of wet performance. The above-described object can be achieved by a process for making the polymer, said process comprising the steps of polymerizing or copolymerizing a conjugated diene monomer by using an organolithium compound as an initiator in a hydrocarbon solvent and thereafter allowing the active termination of the polymer to react with a compound having an alkylideneamino group represented by the following formula 1; wherein R, R′, R″, and R′″ each represent a group having 1 to 18 carbon atoms selected from the group consisting of: an alkyl group, an allyl group, or an aryl group; and m and n are integers of from 1 to 20 and from 1 to 3, respectively.

    摘要翻译： 本发明的目的是提供一种改进的二烯聚合物，其能够独立于填料的种类产生良好的增强特性和填料分散效果，以及制备聚合物的方法，并提供具有良好断裂特性的橡胶组合物， 耐磨性和低放热性，而不影响湿性能。 上述目的可以通过制备聚合物的方法来实现，所述方法包括以下步骤：通过在烃溶剂中使用有机锂化合物作为引发剂使共轭二烯单体聚合或共聚，然后允许聚合物的有效终止 与具有由下式1表示的亚烷基氨基的化合物反应;其中R，R'，R“和R”'各自表示具有1至18个碳原子的基团，所述基团选自： 基团，烯丙基或芳基; m和n分别为1至20和1至3的整数。

    OIL-EXTENDED NATURAL RUBBER AND METHOD FOR PRODUCING THE SAME RUBBER COMPOSITION AND TIRE USING THE SAME
    10.
    发明申请
    OIL-EXTENDED NATURAL RUBBER AND METHOD FOR PRODUCING THE SAME RUBBER COMPOSITION AND TIRE USING THE SAME 有权
    油扩展的天然橡胶和用于生产相同橡胶组合物和轮胎的方法

    公开(公告)号：US20100222488A1

    公开(公告)日：2010-09-02

    申请号：US12161699

    申请日：2007-01-25

    申请人： Hajime Kondo

    发明人： Hajime Kondo

    IPC分类号： C08K3/04 ,  C08L7/02

    CPC分类号： B60C1/00 ,  C08C1/14 ,  C08C1/15 ,  C08K3/04 ,  C08K3/36 ,  C08K5/01 ,  C08L7/00

    摘要： This invention relates to an oil-extended natural rubber capable of improving a tensile strength and a wear resistance of a rubber composition, and more particularly to an oil-extended natural rubber formed by adding an emulsified extension oil to a natural rubber latex and further coagulating and drying them. An amount of the extension oil added is preferable to be within a range of 5-80% by mass based on a rubber component in the natural rubber latex and the oil-extended natural rubber is preferable to have a weight average molecular weight as converted to polystyrene of a rubber component of not less than 1,500,000.

    摘要翻译： 本发明涉及一种能够提高橡胶组合物的拉伸强度和耐磨性的增油天然橡胶，更具体地说，涉及一种通过向天然橡胶胶乳中加入乳化的延展油而进一步凝固形成的充油天然橡胶 并干燥。 延伸油的添加量相对于天然橡胶胶乳中的橡胶成分优选在5-80质量％的范围内，充油天然橡胶的重均分子量优选为 橡胶组分的聚苯乙烯不低于1,500,000。