Diene rubber composition for tire comprising a specific silica as reinforcing filler
    1.
    发明申请
    Diene rubber composition for tire comprising a specific silica as reinforcing filler 有权
    用于轮胎的二烯橡胶组合物,其包含特定二氧化硅作为增强填料

    公开(公告)号:US20050004297A1

    公开(公告)日:2005-01-06

    申请号:US10777075

    申请日:2004-02-13

    摘要: Diene rubber compositions are described containing a diene elastomer, a reinforcing inorganic filler, and a coupling agent wherein the inorganic filler includes a silica having the following characteristics: (a) a BET specific surface area between 45 and 400 m2/g; (b) a CTAB specific surface area between 40 and 380 m2/g; (c) an average particle size (by mass), dw, of 20 to 300 nm; and at least one of the following characteristics, preferably two and more preferably all three: (d) a particle size distribution such that dw≧/CTAB)−30; (e) a porosity which meets the criterion L/FI≧−0.0025 CTAB+0.85; (f) an amount of silanols per unit of surface area, NSiOH/nm2; NSiOH/nm2≦−0.027 CTAB+10.5. These diene rubber compositions can be used for the manufacture of tires or of semi-finished products intended for tires.

    摘要翻译: 描述了含有二烯弹性体,增强无机填料和偶联剂的二烯橡胶组合物,其中无机填料包括具有以下特性的二氧化硅:(a)BET比表面积为45-400m 2 / g; (b)CTAB比表面积在40和380m 2 / g之间; (c)平均粒径(质量百分比)dw为20〜300nm; 和以下特征中的至少一个,优选两个,更优选全部三个:(d)使得dw> = / CTAB)-30的粒度分布; (e)满足标准L / FI> = - 0.0025 CTAB + 0.85的孔隙率; (f)每单位表面积的硅烷醇量,NSiOH / nm 2; NSiOH / nm 2 = 0.027 CTAB + 10.5。 这些二烯橡胶组合物可用于制造轮胎或用于轮胎的半成品。

    Method for preparing anisotropic silica aggregates
    9.
    发明授权
    Method for preparing anisotropic silica aggregates 有权
    制备各向异性二氧化硅聚集体的方法

    公开(公告)号:US07884153B2

    公开(公告)日:2011-02-08

    申请号:US10563792

    申请日:2004-07-07

    IPC分类号: C08K3/36 C01B33/18

    摘要: The invention concerns a method for preparing anisotropic silica aggregates comprising the following steps: a) contacting at least one polymer with non-aggregated silica particles and/or highly dispersed in an aqueous medium, with a ratio R, polymer weight to silica particle surface, ranging between 0.03 and 2 mg/m; 2; and whereof the electrostatic value of the silica particle surface is not less than the value of the charge of the silica particle surface measured in an aqueous phase without added salts at a pH not less than 7; b) consolidating the aggregates obtained at step a) either by heat treatment, or by precipitation of a mineral compound. The invention also concerns a silica aggregate comprising a chaining of elementary particles whereof the number of particles ranges between 5 and 15, whereof 80% of elementary particles are in contact with not more than 2 particles and whereof the greatest distance measurable between 2 points of the aggregate is not more than 5 times the average size of one elementary particle.

    摘要翻译: 本发明涉及一种制备各向异性二氧化硅聚集体的方法,包括以下步骤:a)使至少一种聚合物与非聚集的二氧化硅颗粒接触和/或高度分散在水性介质中,R与聚合物重量与二氧化硅颗粒表面的比率, 范围在0.03至2mg / m; 2; 并且二氧化硅颗粒表面的静电值不小于在不低于7的pH下在没有添加盐的情况下在水相中测量的二氧化硅颗粒表面的电荷的值; b)通过热处理或通过沉淀矿物化合物来固化在步骤a)获得的聚集体。 本发明还涉及一种二氧化硅聚集体,其包含基本粒子的连接,其中粒子数目在5至15之间,其中80%的基本粒子与不超过2个粒子接触,并且其中2个点之间的最大距离可以测量 聚集体不超过一个基本粒子的平均尺寸的5倍。