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    PNEUMATIC TIRE
    1.
    发明申请
    PNEUMATIC TIRE 有权
    气动轮胎

    公开(公告)号：US20100288406A1

    公开(公告)日：2010-11-18

    申请号：US12810774

    申请日：2009-02-13

    申请人： Takamasa Kitamura ,  Shigeki Ito ,  Kenichi Kitano ,  Takeshi Inohara

    发明人： Takamasa Kitamura ,  Shigeki Ito ,  Kenichi Kitano ,  Takeshi Inohara

    IPC分类号： B60C11/00

    CPC分类号： C08L7/00 ,  B60C1/0016 ,  B60C11/14 ,  B60C2011/0025 ,  C08J9/32 ,  C08J2203/22 ,  C08J2307/00 ,  C08J2309/00 ,  C08K3/04 ,  C08K3/36 ,  C08K5/548 ,  C08K7/22 ,  C08K9/10 ,  C08L9/00 ,  C08L21/00 ,  C08L2666/08

    摘要： Provided is a pneumatic tire whose frictional force on ice is improved by satisfactorily forming resin-encapsulated cells from heat-expandable microcapsules, even when a tread rubber contains silica. The tire is characterized in that: the tread rubber is made of a rubber composition containing 100 parts by weight of a diene rubber, 30 to 100 parts by weight of a reinforcing filler including at least 10 parts by weight of silica, and 1 to 20 parts by weight of microcapsules each encapsulating a heat-expandable substance; a sulfur-containing silane coupling agent is mixed in the rubber composition in an amount of 3 to 15 wt. % based on the weight of the silica; a shell material of each microcapsule is made of a thermoplastic resin which essentially contains a nitrile monomer (I); a vapor pressure of the heat-expandable substance is set at 1.4 to 3.0 MPa at 150° C.; an average particle diameter of the microcapsules is set at 20 to 30 μm before vulcanization of the rubber composition; an average particle diameter of the microcapsules expanded due to the vulcanization is set at 40 to 80 μm; and thus, a proportion of an area occupied by the cells in the tread rubber is set at 5 to 30%.

    摘要翻译： 本发明提供一种充气轮胎，即使在胎面橡胶含有二氧化硅的情况下，也可以通过令人满意地形成来自热膨胀性微胶囊的树脂封装的细胞来提高冰上的摩擦力。 轮胎的特征在于：胎面橡胶由含有100重量份二烯橡胶的橡胶组合物制成，30至100重量份的包含至少10重量份二氧化硅的增强填料和1至20重量份 每个包封热膨胀物质的微胶囊重量份; 将含硫硅烷偶联剂在橡胶组合物中以3〜15重量％的量混合。 基于二氧化硅的重量％ 每个微胶囊的壳材料由基本上含有腈单体（I）的热塑性树脂制成; 在150℃下将热膨胀性物质的蒸气压设定为1.4〜3.0MPa。 在橡胶组合物硫化之前，将微胶囊的平均粒径设定为20〜30μm。 将由于硫化而膨胀的微胶囊的平均粒径设定为40〜80μm， 因此胎面胶中的细胞所占的面积的比例为5〜30％。

    Pneumatic tire
    2.
    发明授权
    Pneumatic tire 有权
    气动轮胎

    公开(公告)号：US08534333B2

    公开(公告)日：2013-09-17

    申请号：US12810774

    申请日：2009-02-13

    申请人： Takamasa Kitamura ,  Shigeki Ito ,  Kenichi Kitano ,  Takeshi Inohara

    发明人： Takamasa Kitamura ,  Shigeki Ito ,  Kenichi Kitano ,  Takeshi Inohara

    IPC分类号： B60C11/00

    CPC分类号： C08L7/00 ,  B60C1/0016 ,  B60C11/14 ,  B60C2011/0025 ,  C08J9/32 ,  C08J2203/22 ,  C08J2307/00 ,  C08J2309/00 ,  C08K3/04 ,  C08K3/36 ,  C08K5/548 ,  C08K7/22 ,  C08K9/10 ,  C08L9/00 ,  C08L21/00 ,  C08L2666/08

    摘要： A tread rubber is made of a rubber composition containing 100 pbw of a diene rubber, 30 to 100 pbw of a reinforcing filler including at least 10 pbw of silica, and 1 to 20 pbw of microcapsules each encapsulating a heat-expandable substance. A sulfur-containing silane coupling agent is mixed in the rubber composition in an amount of 3 to 15 wt. % based on the weight of the silica. A shell material of each microcapsule is made of a thermoplastic resin which essentially contains a nitrile monomer. A vapor pressure of the heat-expandable substance is 1.4 to 3.0 MPa at 150° C. An average diameter of the microcapsules is 20 to 30 μm before vulcanization of the rubber composition. An average diameter of the microcapsules expanded due to the vulcanization is 40 to 80 μm. The tread rubber has a proportion of a cell-occupying area of 5 to 30%.

    摘要翻译： 胎面橡胶由含有100pbw的二烯橡胶，30-100pbw的包含至少10pbw的二氧化硅的增强填料和1至20pbw的每个包封热膨胀性物质的微胶囊的橡胶组合物制成。 含硫硅烷偶联剂在橡胶组合物中以3〜15重量％的量混合。 基于二氧化硅的重量％。 每个微胶囊的壳材料由基本上含有腈单体的热塑性树脂制成。 在150℃下，热膨胀性物质的蒸气压为1.4〜3.0MPa。在橡胶组合物硫化之前，微胶囊的平均直径为20〜30μm。 由于硫化而膨胀的微胶囊的平均直径为40-80μm。 胎面橡胶占电池占用面积的比例为5〜30％。

    HEAT-EXPANDABLE MICROSPHERES AND A PROCESS FOR PRODUCING THE SAME
    6.
    发明申请
    HEAT-EXPANDABLE MICROSPHERES AND A PROCESS FOR PRODUCING THE SAME 有权
    可热膨胀的微球及其制造方法

    公开(公告)号：US20090176098A1

    公开(公告)日：2009-07-09

    申请号：US12067771

    申请日：2006-10-04

    申请人： Toshiaki Masuda ,  Kenichi Kitano ,  Katsushi Miki ,  Takeshi Inohara ,  Takayuki Aoki

    发明人： Toshiaki Masuda ,  Kenichi Kitano ,  Katsushi Miki ,  Takeshi Inohara ,  Takayuki Aoki

    IPC分类号： C08J9/16 ,  B32B1/00

    CPC分类号： B01J13/14 ,  Y10T428/2982 ,  Y10T428/2984 ,  Y10T428/2985 ,  Y10T428/2987 ,  Y10T428/2998

    摘要： A method that heat-expandable microspheres includes the use of a shell of thermoplastic resin and a non-fluorine blowing agent encapsulated therein having a boiling point not higher than the softening point of the thermoplastic resin. The method includes a step of dispersing an oily mixture containing a polymerizable component, the blowing agent, and a polymerization initiator containing a peroxydicarbonate in an aqueous dispersing medium to polymerize the polymerizable component contained in the oily mixture. The resultant heat-expandable microspheres have a shell which is less apt to become thinner than its theoretical value, contain minimum amount of resin particle inside their shell, and have excellent heat-expanding performance.

    摘要翻译： 热膨胀性微球的方法包括使用热塑性树脂的壳和封入其中的沸点不高于热塑性树脂的软化点的非氟发泡剂。 该方法包括将含有可聚合组分的油性混合物，发泡剂和含有过氧化二碳酸酯的聚合引发剂分散在水性分散介质中以使包含在油性混合物中的可聚合组分聚合的步骤。 所得到的热膨胀性微球体的外壳不易于其理论值变薄，在其壳内含有最少量的树脂颗粒，并且具有优异的热膨胀性能。