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    Rubber composition for use in tire tread
    2.
    发明授权
    Rubber composition for use in tire tread 有权

    公开(公告)号：US11104782B2

    公开(公告)日：2021-08-31

    申请号：US15301711

    申请日：2015-04-03

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Keisuke Maejima

    IPC: C08L9/06 ,  B60C1/00 ,  C08K3/04 ,  C08L7/00 ,  C08L47/00 ,  C08K3/36 ,  C08K5/548 ,  C08L9/00

    Abstract: A rubber composition for use in a tire tread includes: per 100 parts by weight of diene rubber containing 40 wt % or greater of butadiene rubber, and a styrene butadiene rubber, from 80 to 150 parts by weight of silica having a CTAB specific surface area of 150 to 250 m2/g, and a long chain alkyl group-containing silane compound in an amount of 1 to 10 wt % of the amount of the silica. The rubber composition further includes a styrene component in the diene rubber being from 15 to 20 wt %, and a vinyl component in the diene rubber being from 18 to 28 wt %; and an average glass transition temperature of the diene rubber is −55° C. or lower.

    Rubber Composition for Tires and Pneumatic Tire
    3.
    发明申请
    Rubber Composition for Tires and Pneumatic Tire 审中-公开

    公开(公告)号：US20170283518A1

    公开(公告)日：2017-10-05

    申请号：US15507212

    申请日：2015-08-24

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Keisuke Maejima ,  Masaki Sato ,  Makoto Ashiura

    IPC: C08C19/30 ,  C08C19/38 ,  C08K3/36 ,  C08C19/36 ,  C08F297/04 ,  C08F8/42

    Abstract: A rubber composition for tires of the present technology contains a diene rubber, silica, and a predetermined alkyltrialkoxysilane; the diene rubber containing a butadiene rubber and a particular conjugated diene rubber, a content of the butadiene rubber in the diene rubber being 20 mass % or greater and a content of the particular conjugated diene rubber in the diene rubber being from 30 to 80 mass %; an average glass transition temperature of the diene rubber being from −65 to −45° C.; the particular conjugated diene rubber being a conjugated diene rubber produced by a particular production method and having predetermined ranges of aromatic vinyl unit content, vinyl bond content, and weight average molecular weight.

    Stud tire
    5.
    发明授权
    Stud tire 有权

    公开(公告)号：US10589576B2

    公开(公告)日：2020-03-17

    申请号：US15129764

    申请日：2015-03-31

    Applicant: THE YOKOHAMA RUBBER CO., LTD.

    Inventor： Keisuke Maejima ,  Satoshi Mihara

    IPC: B60C11/16 ,  B60C1/00 ,  B60C11/11 ,  C08K3/04 ,  B60C11/00 ,  C08K3/36 ,  C08L91/06 ,  C08L91/00 ,  C08L9/06 ,  B60C11/12 ,  C08L7/00 ,  C08L9/00 ,  C08K9/10 ,  C08K5/01

    Abstract: A studded tire includes stud pins embedded in a road contact surface of a tread portion 1; the rubber composition forming the tread portion containing at least one of natural rubber, styrene-butadiene rubber, and butadiene rubber, from 5 to 50 parts by weight of carbon black and from 5 to 70 parts by weight of silica per 100 parts by weight of the diene rubber; a nitrogen adsorption specific surface area of the carbon black being from 50 to 120 m2/g; a CTAB specific surface area of the silica being from 80 to 190 m2/g; a rubber hardness of the rubber composition being not greater than 60; and a product of a stress at the time of 400% elongation and a bottom surface area of a flange portion on a bottom side of the stud pins being not less than 400 MPa·mm2 and not greater than 850 MPa·mm2.

    Rubber Composition for Tire and Studless Winter Tire
    6.
    发明申请
    Rubber Composition for Tire and Studless Winter Tire 有权
    轮胎和无冬季轮胎的橡胶组成

    公开(公告)号：US20160237253A1

    公开(公告)日：2016-08-18

    申请号：US15024793

    申请日：2014-09-22

    Applicant: THE YOKOHAMA RUBBER CO., LTD.

    Inventor： Takashi Kakubo ,  Kazushi Kimura ,  Keisuke Maejima

    IPC: C08L7/00 ,  B60C11/00 ,  B60C1/00

    CPC classification number: C08L7/00 ,  B60C1/00 ,  B60C1/0016 ,  B60C11/0008 ,  B60C11/14 ,  B60C2011/0016 ,  C08K3/00 ,  C08K3/04 ,  C08K3/06 ,  C08K3/22 ,  C08K3/36 ,  C08K5/09 ,  C08K5/18 ,  C08K5/47 ,  C08K5/548 ,  C08L9/00 ,  C08L71/02 ,  C08L91/00 ,  C08L101/00 ,  C08L101/02

    Abstract: The present technology provides a rubber composition for a tire with which it is possible to produce a tire having excellent on-ice performance and excellent wear resistance, and a studless winter tire using the rubber composition. The rubber composition for a tire of the present technology is a rubber composition for a tire comprising: 100 parts by mass of a diene rubber (A); from 30 to 100 parts by mass of carbon black and/or a white filler (B); and from 0.3 to 30 parts by mass of a cured product (C) prepared by curing a crosslinkable oligomer or polymer (c1) incompatible with the diene rubber (A); a JIS A hardness of the cured product (C) being from 3 to 45.

    Abstract translation: 本技术提供了一种轮胎用橡胶组合物，可以制造具有优异的冰上性能和优异的耐磨性的轮胎，以及使用该橡胶组合物的无钉冬季轮胎。 本技术的轮胎用橡胶组合物是轮胎用橡胶组合物，其包含：100质量份二烯橡胶（A）; 30〜100质量份的炭黑和/或白色填料（B）; 和0.3〜30质量份通过固化与二烯橡胶（A）不相容的交联性低聚物或聚合物（c1）制备的固化物（C）; 固化物（C）的JIS A硬度为3〜45。

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