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    RUBBER COMPOSITION AND TIRE
    1.
    发明申请
    RUBBER COMPOSITION AND TIRE 有权

    公开(公告)号：US20230040071A1

    公开(公告)日：2023-02-09

    申请号：US17757521

    申请日：2020-11-24

    申请人： BRIDGESTONE CORPORATION

    发明人： Akiko OGIWARA ,  Yasuhiro SHODA ,  Kenjiro YANAI

    IPC分类号： C08F236/02 ,  C08K5/1545 ,  C08K3/36 ,  B60C1/00

    摘要： Provided is a rubber composition being excellent in cut resistance while maintaining good elongation fatigue resistance. The rubber composition of the present disclosure contains a rubber component containing 70% by mass or more of natural rubber, a filler containing at least silica, and a cyclic polyol compound having a hydrocarbyl group of 0.1 parts by mass to 2 parts by mass with respect to 100 parts by mass of the natural rubber in the rubber component.

    Method of producing conjugated diene polymers with narrow molecular weight distribution and polymer produced
    6.
    发明授权
    Method of producing conjugated diene polymers with narrow molecular weight distribution and polymer produced 有权
    生产具有窄分子量分布的共轭二烯聚合物和聚合物的方法

    公开(公告)号：US07294680B2

    公开(公告)日：2007-11-13

    申请号：US10759299

    申请日：2004-01-20

    申请人： Takuo Sone ,  Katsutoshi Nonaka ,  Iwakazu Hattori ,  Akio Takashima

    发明人： Takuo Sone ,  Katsutoshi Nonaka ,  Iwakazu Hattori ,  Akio Takashima

    IPC分类号： C08F4/52 ,  C08F8/42 ,  C08F136/02 ,  C08F236/02

    CPC分类号： C08C19/00 ,  C08F36/04 ,  C08F4/545

    摘要： Conjugated diene polymers having good wear resistance, mechanical properties, storage stability, processability and a reduced cold flow are produced by polymerizing a conjugated diene compound with a catalyst of rare earth element compound, a compound containing at least one halogen atom, an aluminoxane, and an organoaluminum compound in an organic solvent and reacting the resulting polymer just after the polymerization with at least one compound selected from the group consisting of a halogenated organometallic compound, a halogenated metal compound, an organometallic compound, a heterocumulene compound, a hetero three-membered-ring containing compound, a halogenated isocyano compound, a carboxylic acid, an acid halide, an ester compound, a carbonic ester compound, an acid anhydride and a metal salt of a carboxylic acid as a modifying agent.

    摘要翻译： 通过使共轭二烯化合物与稀土元素化合物的催化剂，含有至少一个卤素原子的化合物，铝氧烷和/或其混合物共聚而形成具有良好的耐磨性，机械性能，储存稳定性，加工性和降低的冷流的共轭二烯聚合物 在有机溶剂中的有机铝化合物，使刚刚聚合后的所得聚合物与选自卤代有机金属化合物，卤化金属化合物，有机金属化合物，异葎草烯化合物，杂三元醇的至少一种化合物反应 卤化异氰化合物，羧酸，酰卤，酯化合物，碳酸酯化合物，酸酐和作为改性剂的羧酸金属盐。

    Process for copolymerizing conjugated diene and alpha-olefin
    10.
    发明授权
    Process for copolymerizing conjugated diene and alpha-olefin 失效
    共聚二烯和阿拉伯烯烃共聚方法

    公开(公告)号：US4051309A

    公开(公告)日：1977-09-27

    申请号：US769745

    申请日：1977-02-17

    申请人： Jung Wong Kang ,  James Oziomek

    发明人： Jung Wong Kang ,  James Oziomek

    IPC分类号： C08F210/00 ,  C08F236/04 ,  C08F236/02

    CPC分类号： C08F210/00 ,  C08F10/00 ,  C08F236/04

    摘要： Conjugated dienes and alpha-olefins, such as butadiene and propylene, are copolymerized by a catalyst system comprising a metal component TiCl.sub.n Br.sub.4-n or VCl.sub.m Br.sub.5-m, a reducing agent of the formula AlR.sub.2 H wherein R is hydrogen or a hydrocarbon group, there being at least one hydrocarbon group per molecule, and a carbonyl-containing compound such as acetophenone. The use of the aluminum hydride compound allows the use of higher and more practical temperatures to obtain desirable molecular weights, yields and microstructure that with aluminum trialkyls require much lower and less practical polymerization temperatures.