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    RUBBER COMPOSITION AND METHOD FOR PRODUCING SAME
    503.
    发明申请
    RUBBER COMPOSITION AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：US20150361253A1

    公开(公告)日：2015-12-17

    申请号：US14828133

    申请日：2015-08-17

    Applicant: TOYO TIRE & RUBBER CO., LTD.

    Inventor： Takayoshi Kimura

    IPC: C08L9/00 ,  C08L7/00

    CPC classification number: C08L9/00 ,  C08J3/005 ,  C08J3/11 ,  C08J3/22 ,  C08J2307/02 ,  C08J2409/00 ,  C08K3/04 ,  C08K5/01 ,  C08K2201/006 ,  C08L7/00 ,  C08L91/00

    Abstract: A rubber composition obtained by dry-mixing a natural rubber wet master batch yielded by mixing at least a natural rubber latex and a carbon-black-containing slurry solution with each other in a liquid phase and drying the resultant mixture, a dry rubber made mainly of a polybutadiene rubber, and an oil, wherein when the total amount of rubber components in the rubber composition is regarded as 100 parts by mass, the natural rubber is contained in an amount of 50 parts or more by mass, and the polybutadiene rubber is contained in an amount of 20 to 50 parts by mass, and the oil has a pour point of −10 C or lower, and an aniline point of 90 C or higher, and the blend amount of the oil is from 15 to 40 parts by mass for 100 parts by mass of the rubber components.

    RUBBER COMPOSITION FOR RUN-FLAT TIRE
    505.
    发明申请
    RUBBER COMPOSITION FOR RUN-FLAT TIRE 有权
    用于跑平轮胎的橡胶组合物

    公开(公告)号：US20150298511A1

    公开(公告)日：2015-10-22

    申请号：US14440046

    申请日：2013-10-25

    Applicant: THE YOKOHAMA RUBBER CO., LTD.

    Inventor： Yoshihiro KAMEDA

    IPC: B60C17/00 ,  C08L9/00 ,  B60C5/00

    CPC classification number: B60C17/0009 ,  B60C1/00 ,  B60C5/00 ,  B60C17/00 ,  B60C2001/0033 ,  B60C2017/0054 ,  C08K3/04 ,  C08K2201/006 ,  C08L7/00 ,  C08L9/00 ,  Y02T10/862

    Abstract: A rubber composition for a run-flat tire comprises from 20 to 100 parts by weight of a reinforcing filler per 100 parts by weight of a diene rubber containing from 10 to 80 wt. % of butadiene rubber and from 10 to 40 wt. % of natural rubber; wherein the reinforcing filler contains at least 50 wt. % of carbon black; a mode diameter Dst in a mass distribution curve of a Stokes diameter of aggregates of the carbon black is at least 145 nm; a nitrogen adsorption specific surface area N2SA is from 45 to 70 m2/g; and a ratio N2SA/IA of the nitrogen adsorption specific surface area N2SA to an iodine adsorption IA (units: mg/g) is from 1.00 to 1.40.

    Abstract translation: 用于防漏轮胎的橡胶组合物包含每100重量份含有10至80重量％的二烯橡胶的20至100重量份的增强填料。 丁二烯橡胶的％和10〜40wt。 天然橡胶％ 其中所述增强填料含有至少50wt。 ％的炭黑; 炭黑的聚集体的斯托克斯直径的质量分布曲线中的模式直径Dst为至少145nm; 氮吸附比表面积N2SA为45〜70m 2 / g; 氮吸附比表面积N2SA与碘吸附IA（单位：mg / g）的比率N2SA / IA为1.00〜1.40。

    Rubber Composition for Use in Tire Treads
    507.
    发明申请
    Rubber Composition for Use in Tire Treads 有权
    用于轮胎胎面的橡胶组合物

    公开(公告)号：US20150259515A1

    公开(公告)日：2015-09-17

    申请号：US14383898

    申请日：2012-03-08

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Yoichi Takizawa ,  Naoki Kushida

    IPC: C08L9/06 ,  C08K3/00 ,  C08K3/04

    CPC classification number: C08L9/06 ,  B60C1/0016 ,  C08K3/04 ,  C08K5/372 ,  C08K2201/006 ,  C08L81/04 ,  C08L91/00 ,  C08L93/00 ,  C08L2205/025 ,  C08K5/45

    Abstract: Problem: To provide a rubber composition for use in tire treads by which rubber hardness, elastic modulus and rubber strength in the high-temperature state can be enhanced to or beyond conventional levels while dry grip performance is maintained.Means of Solution: A rubber composition in which from 80 to 150 parts by weight of carbon black having a nitrogen adsorption specific surface area of from 200 to 400 m2/g is compounded per 100 parts by weight of styrene-butadiene rubber including from 60% to 100% by weight of solution-polymerized styrene-butadiene rubber S-SBR1 and from 40% to 0% by weight of solution-polymerized styrene-butadiene rubber S-SBR2 so as to result in a total of 100% by weight, the styrene quantity of the S-SBR1 being from 30% to 38% by weight, the vinyl quantity of the S-SBR1 being from 60% to 80% by weight, the glass transition temperature of the S-SBR1 being from −20° C. to −5° C., the weight-average molecular weight of the S-SBR1 being from 1,000,000 to 1,800,000, the glass transition temperature of the S-SBR2 being not less than −30° C. and less than −20° C., and the weight-average molecular weight of the S-SBR2 being from 1,000,000 to 1,800,000.

    Abstract translation: 问题：提供一种用于轮胎胎面的橡胶组合物，通过该橡胶组合物可以在保持干抓地性能的同时将高温状态下的橡胶硬度，弹性模量和橡胶强度提高到或超过常规水平。 方案：将每100重量份含有60重量％的苯乙烯 - 丁二烯橡胶的苯乙烯 - 丁二烯橡胶相配合，其中80至150重量份的氮吸附比表面积为200-400m2 / g的炭黑， 至100重量％的溶液聚合的苯乙烯 - 丁二烯橡胶S-SBR1和40重量％至0重量％的溶液聚合的苯乙烯 - 丁二烯橡胶S-SBR2，以得到总计100重量％ S-SBR1的苯乙烯量为30〜38重量％，S-SBR1的乙烯基量为60〜80重量％，S-SBR1的玻璃化转变温度为-20℃ 至-5℃，S-SBR1的重均分子量为1,000,000至1,800,000，S-SBR2的玻璃化转变温度不低于-30℃且小于-20℃ ，S-SBR2的重均分子量为1,000,000至1,800,000。

    Rubber Composition for Tire Rim Cushion or Rubber Finishing and Pneumatic Tire Using the Same
    508.
    发明申请
    Rubber Composition for Tire Rim Cushion or Rubber Finishing and Pneumatic Tire Using the Same 有权
    橡胶组合物用于轮胎衬垫或橡胶整理和气动轮胎使用它

    公开(公告)号：US20150240060A1

    公开(公告)日：2015-08-27

    申请号：US14419203

    申请日：2013-07-31

    Applicant: The Yokohama Rubber Co., Ltd.

    Inventor： Tomoyuki Wada

    IPC: C08L9/00

    CPC classification number: C08L9/00 ,  B60C1/00 ,  B60C2001/005 ,  C08K3/04 ,  C08K2201/006 ,  C08K2201/014 ,  C08L21/00

    Abstract: A composition formed by compounding from 55 to 75 parts by mass of a carbon black (1) having a nitrogen adsorption surface area of at least 35 m2/g and less than 50 m2/g and from 5 to 20 parts by mass of a carbon black (2) having a nitrogen adsorption surface area of at least 50 m2/g and at most 95 m2/g with 100 parts by mass of a rubber component including from 30 to 70 mass % of butadiene rubber having a cis-1,4 bond content of at least 97% and a Mooney viscosity (ML1+4) of at least 45 at 100° C., a ratio (T-cp)/(ML1+4) of the viscosity of a 5 mass % toluene solution at 25° C. (T-cp) [cps] to the Mooney viscosity being at least 2.0, and from 30 to 70 mass % of other diene rubbers; the total of the carbon blacks (1) and (2) being from 60 to 95 parts by mass.

    Abstract translation: 通过将55〜75质量份的氮吸附表面积至少为35m 2 / g且小于50m 2 / g的碳黑（1）和5〜20质量份的碳 黑色（2）具有至少50m 2 / g至多95m 2 / g的氮吸附表面积，100质量份的包含30至70质量％的具有顺式-1,4 在100℃下的键含量为97％以上，门尼粘度（ML1 + 4）为45以上，5质量％甲苯溶液的粘度比（T-cp）/（ML1 + 4） 25℃（T-cp）[cps]至门尼粘度为2.0以上，30〜70质量％的其他二烯系橡胶; 炭黑（1）和（2）的总量为60〜95质量份。

    CALCIUM CARBONATE FILLER FOR RESIN, AND RESIN COMPOSITION CONTAINING SAID FILLER
    509.
    发明申请
    CALCIUM CARBONATE FILLER FOR RESIN, AND RESIN COMPOSITION CONTAINING SAID FILLER 有权
    用于树脂的碳酸钙填料和含有填料的树脂组合物

    公开(公告)号：US20150240040A1

    公开(公告)日：2015-08-27

    申请号：US14432310

    申请日：2013-10-11

    Applicant: MARUO CALCIUM CO., LTD.

    Inventor： Hidemitsu Kasahara ,  Shigeo Takiyama

    IPC: C08J5/18 ,  C08K9/04 ,  C08K3/26

    CPC classification number: C08J5/18 ,  C01F11/18 ,  C01F11/185 ,  C01P2004/03 ,  C01P2004/51 ,  C01P2006/12 ,  C01P2006/60 ,  C01P2006/82 ,  C08J2367/02 ,  C08J2367/03 ,  C08K3/26 ,  C08K9/04 ,  C08K2003/265 ,  C08K2201/003 ,  C08K2201/006 ,  C09C1/021 ,  Y10T428/2982 ,  C08L67/02

    Abstract: The calcium carbonate filler for a resin is provided in which a volatile component such as water present in a surface of calcium carbonate is likely to be degassed even when the filler is incorporated into and kneaded with a resin having high processing temperature at a high concentration, and foaming or the like can be suppressed. In particular, the calcium carbonate filler is useful in optical fields that require reflectivity and light resistance.The calcium carbonate filler for a resin has a content rate of particles having a particle diameter of 0.26 μm or less is 30% or less in a number particle size distribution diameter measured from an electron micrograph, and satisfies the following expressions (a) Dms5/Dmv5≦3.0, (b) 1.0≦Sw≦10.0 (m2/g) and (c) Dma≦5.0 (% by volume): Dms5: a 5% diameter (μm) accumulated from a small particle side in a volume particle size distribution measured with a laser diffraction particle size distribution measurement device; Dmv5: a 5% diameter (μm) accumulated from a small particle side in a number particle size distribution in a particle diameter measured with an electron microscope; Sw: a BET specific surface area (m2/g); and Dma: a content rate (% by volume) of particles having a particle diameter of 3 μm or more in a volume particle size distribution measured with a laser diffraction particle size distribution measurement device.

    Abstract translation: 提供了一种用于树脂的碳酸钙填料，其中存在于碳酸钙表面中的挥发性成分例如即使当填料掺入并且以高浓度处理温度高的树脂捏合时也可能脱气， 并且可以抑制发泡等。 特别地，碳酸钙填料可用于需要反射率和耐光性的光场。 用于树脂的碳酸钙填料在从电子显微镜照片测得的数量粒度分布直径中，粒径为0.26μm以下的粒子的含有率为30％以下，满足下式（a）Dms5 / Dmv5＆nlE; 3.0，（b）1.0＆nlE; Sw＆nlE; 10.0（m2 / g）和（c）Dma＆NlE; 5.0（体积％）：Dms5：从体积颗粒中的小颗粒侧积累的5％直径 用激光衍射粒度分布测量装置测量尺寸分布; Dmv5：以电子显微镜测定的粒径的数量粒径分布中从小粒子侧积累的5％直径（μm） Sw：BET比表面积（m2 / g）; 和Dma：使用激光衍射粒度分布测定装置测定的体积粒径分布中粒径为3μm以上的粒子的含有率（体积％）。

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