公开(公告)号：US06242522B1

公开(公告)日：2001-06-05

申请号：US09274012

申请日：1999-03-22

申请人： Naofumi Ezawa ,  Kazuo Yagawa ,  Naohiro Sasaka

发明人： Naofumi Ezawa ,  Kazuo Yagawa ,  Naohiro Sasaka

IPC分类号： C08J300

CPC分类号： C08K5/47 ,  B60C1/0016 ,  C08K3/22 ,  C08K3/36 ,  C08K5/5398 ,  Y10S152/905 ,  Y10T152/10 ,  Y10T152/10495 ,  C08L21/00

摘要： There is disclosed a rubber composition for a tire tread Which comprises 100 parts by weight of (A) a rubber component comprising a diene-based synthetic rubber or a mixture of a diene-based synthetic rubber and natural rubber and containing at least 20% by weight of a styrene-butadiene rubber; 5 to 50 parts by weight of (B) aluminum hydroxide powders; and at least 5 parts by weight of (C) silica powders, wherein the total amount of the components (B) and (C) is in the range of 40 to 80 parts by weight; and optionally chemical agents such as vulcanizing agents, vulcanization accelerators and antioxidants, and also is disclosed a pneumatic tire in which the above rubber composition is used as the tread rubber. The above rubber composition, when made into a tire tread, can maintain favorable low fuel consumption properties and low wear resistance, and besides can impart the tire with greatly improved gripping properties on wet road surfaces particularly at a low temperature. Moreover, the pneumatic tire made from the above rubber composition can exert excellent effect of maintaining a high maneuverability from the initial stage of running to and after the middle stage thereof.

摘要翻译： 公开了一种用于轮胎胎面的橡胶组合物，其包含100重量份的（A）包含二烯类合成橡胶的橡胶组分或二烯类合成橡胶和天然橡胶的混合物，并且含有至少20％ 苯乙烯 - 丁二烯橡胶的重量; 5〜50重量份的（B）氢氧化铝粉末; 和至少5重量份的（C）二氧化硅粉末，其中组分（B）和（C）的总量在40至80重量份的范围内; 和任选的化学试剂如硫化剂，硫化促进剂和抗氧化剂，并且还公开了一种充气轮胎，其中使用上述橡胶组合物作为胎面橡胶。 上述橡胶组合物当制成轮胎胎面时，可以保持良好的低燃料消耗性能和低耐磨性，并且还可以赋予轮胎在湿路面上，特别是在低温下大大提高的抓持性能。 此外，由上述橡胶组合物制成的充气轮胎可以发挥从运行的初始阶段到其中间阶段之后的高机动性的良好效果。

公开(公告)号：US06336486B1

公开(公告)日：2002-01-08

申请号：US09052968

申请日：1998-04-01

申请人： Shizuo Iwasaki ,  Kazuo Yagawa ,  Naohiro Sasaka ,  Kazuo Hayashi

发明人： Shizuo Iwasaki ,  Kazuo Yagawa ,  Naohiro Sasaka ,  Kazuo Hayashi

IPC分类号： B60C100

CPC分类号： B60C11/00 ,  B60C1/0016 ,  B60C11/005 ,  B60C11/03 ,  B60C11/0309 ,  B60C11/18

摘要： A pneumatic radial tire comprises a tread portion having a two-layer structure of a cap rubber layer disposed outward in the radial direction and a base rubber layer disposed inward in the radial direction, in which an outer surface of said base rubber layer in the radial direction being existent in a position corresponding to not less than 20% of a depth of a main groove formed in the tread portion outward from a bottom of the main groove in the radial direction, and the base rubber layer being compounded with a recrosslinking inhibition assistant and/or an inorganic compound powder.

摘要翻译： 一种充气子午线轮胎包括具有沿径向向外设置的盖橡胶层的两层结构的胎面部分和沿径向向内设置的基部橡胶层，其中所述基部橡胶层的径向的外表面 方向存在于对应于在径向方向上从主槽的底部向外形成的胎面部中形成的主槽的深度不小于20％的位置，并且基部橡胶层与再交联抑制助剂 和/或无机化合物粉末。

公开(公告)号：US06186204B1

公开(公告)日：2001-02-13

申请号：US09107431

申请日：1998-06-30

申请人： Naohiro Sasaka ,  Kazuo Yagawa ,  Shigeo Kimura

发明人： Naohiro Sasaka ,  Kazuo Yagawa ,  Shigeo Kimura

IPC分类号： B06C1100

CPC分类号： C08K5/47 ,  B60C1/0016 ,  C08K5/5398 ,  Y10T152/10495 ,  C08L9/06

摘要： A pneumatic tire comprising a tread portion formed by using a rubber composition which comprises: a rubber component comprising 50 parts by weight or more of SBR in 100 parts by weight of the rubber component; optionally, 5 to 40 parts by weight of aluminum hydroxide per 100 parts of the rubber component; per 100 parts by weight of the rubber component, 20 parts by weight or more of a softener which comprises 5 to 55 parts by weight of a specific resin softener having a softening point of 35 to 150° C.; and per 100 parts by weight of the rubber component, 0.2 to 10.0 parts by weight of a specific vulcanization accelerator of a dithiophosphoric acid compound or a specific vulcanization accelerator of a benzothiazole compound. The pneumatic tire exhibits excellent stability and controllability on wet roads or a combination of excellent stability and controllability on wet roads and excellent comfort of ride even when a vehicle is vibrating throughout the life of the pneumatic tire.

摘要翻译： 一种充气轮胎，包括通过使用橡胶组合物形成的胎面部分，所述胎面部分包括：在100重量份的所述橡胶组分中包含50重量份或更多的SBR的橡胶组分; 任选地，每100份橡胶组分为5至40重量份的氢氧化铝; 每100重量份的橡胶组分，20重量份或更多的软化剂，其包含5至55重量份的软化点为35至150℃的特定树脂软化剂; 和100重量份的橡胶组分，0.2至10.0重量份的二硫代磷酸化合物的特定硫化促进剂或苯并噻唑化合物的特定硫化促进剂。 充气轮胎在潮湿道路上表现出优异的稳定性和可控性，或者即使当车辆在充气轮胎的整个使用寿命期间振动时，在湿路面上也具有优异的稳定性和可控性的组合，并且具有优异的乘坐舒适性。

公开(公告)号：US20120046413A1

公开(公告)日：2012-02-23

申请号：US13266701

申请日：2010-04-28

申请人： Naohiro Sasaka

发明人： Naohiro Sasaka

IPC分类号： C08L9/06 ,  C08L7/00

CPC分类号： B60C1/0016 ,  C08K3/04 ,  C08K3/36 ,  C08K5/548 ,  C08K9/06 ,  C08L7/00 ,  C08L9/06 ,  C08L21/00 ,  C08L2666/08

摘要： A pneumatic tire obtained by using a rubber composition containing 100 parts by mass of a rubber component comprising at least one of natural rubber and diene base synthetic rubber, 20 to 150 parts by mass of precipitated silica as a filler in which a cetyltrimethylammonium bromide-adsorbing specific surface area (CTAB) (m2/g) and the mode Aac in diameters (nm) of primary aggregates determined by acoustic measurement of particle size distribution satisfy equation (A) shown below and in which a difference between an ignition loss (mass reduction % when heated at 750° C. for 3 hours) and a heating loss (mass reduction % when heated at 105° C. for 2 hours) satisfies equation (B) shown below and 1 to 25 parts by mass of at least one specific sulfur-containing silane compound as a silane coupling agent: Aac≦−0.76×(CTAB)+274   (A) (ignition loss)−(heating loss)≦3   (B)

摘要翻译： 一种充气轮胎，其通过使用含有100质量份的包含天然橡胶和二烯基合成橡胶中的至少一种的橡胶组分的橡胶组合物，20至150质量份作为填料的沉淀二氧化硅，其中十六烷基三甲基溴化铵吸附 比表面积（CTAB）（m2 / g）和通过粒度分布的声学测量确定的一次聚集体的直径（nm）的模式Aac满足下面的等式（A），其中灼烧损失 加热损失（在105℃下加热2小时时的质量降低％）满足下面所示的式（B）和1〜25质量份的至少一种具体的 含锡硅烷化合物作为硅烷偶联剂：Aac＆NlE; -0.76×（CTAB）+274（A）（点火损失） - （加热损失）＆nlE; 3（B）

公开(公告)号：US06269690B1

公开(公告)日：2001-08-07

申请号：US09306298

申请日：1999-05-06

申请人： Akiyoshi Shimizu ,  Naoto Yamagishi ,  Hiroshi Mouri ,  Naohiro Sasaka ,  Hiroshi Kobayashi ,  Tetsunori Haraguchi ,  Kohshi Katoh

发明人： Akiyoshi Shimizu ,  Naoto Yamagishi ,  Hiroshi Mouri ,  Naohiro Sasaka ,  Hiroshi Kobayashi ,  Tetsunori Haraguchi ,  Kohshi Katoh

IPC分类号： G01M1702

CPC分类号： B60C11/24 ,  G01M17/02 ,  G01N3/56 ,  G01N2203/0218

摘要： The present invention provides a method for estimating a tire wear life which enables estimation of the tire wear life accurately in a short time. In this method, a rubber index Gi of a rubber test piece which is made of the same material as the material used in the tire tread portion of the tire whose tire wear life is to be estimated is measured using an abrasion tester which can be operated under a slip ratio of about 0.5 to 5% (step 100). Then, friction energies of the tire in free rolling, in a state in which the tire is provided with a toe angle, in a state in which a side force is applied to the tire, in a state in which a driving force is applied to the tire and in a state in which a braking force is applied to the tire are measured (step 102), respectively. An expected value of the tire wear life T1 is calculated from the rubber index Gi and the friction energies obtained above (step 104). The tire wear life is estimated from the expected value of the tire wear life T1 thus obtained (step 106).

摘要翻译： 本发明提供一种用于估计轮胎磨损寿命的方法，其能够在短时间内准确地估计轮胎磨损寿命。 在该方法中，使用与要轮胎磨损寿命估计的轮胎的轮胎胎面部分中使用的材料相同的材料制成的橡胶试件的橡胶指数Gi使用可以操作的磨损试验机 在约0.5〜5％的滑移率下（步骤100）。 然后，在施加驱动力的状态下，在向轮胎施加侧向力的状态下，在轮胎设置有趾角的状态下的自由滚动中的轮胎的摩擦力， 测量轮胎和在轮胎中施加制动力的状态（步骤102）。 从橡胶指数Gi和上述获得的摩擦力计算轮胎磨损寿命T1的期望值（步骤104）。 从如此获得的轮胎磨损寿命T1的预期值估计轮胎磨损寿命（步骤106）。

公开(公告)号：US08450408B2

公开(公告)日：2013-05-28

申请号：US13266701

申请日：2010-04-28

申请人： Naohiro Sasaka

发明人： Naohiro Sasaka

IPC分类号： B60C1/00

CPC分类号： B60C1/0016 ,  C08K3/04 ,  C08K3/36 ,  C08K5/548 ,  C08K9/06 ,  C08L7/00 ,  C08L9/06 ,  C08L21/00 ,  C08L2666/08

摘要： A pneumatic tire obtained by using a rubber composition containing 100 parts by mass of a rubber component comprising at least one of natural rubber and diene base synthetic rubber, 20 to 150 parts by mass of precipitated silica as a filler in which a cetyltrimethylammonium bromide-adsorbing specific surface area (CTAB) (m2/g) and the mode Aac in diameters (nm) of primary aggregates determined by acoustic measurement of particle size distribution satisfy equation (A) shown below and in which a difference between an ignition loss (mass reduction % when heated at 750° C. for 3 hours) and a heating loss (mass reduction % when heated at 105° C. for 2 hours) satisfies equation (B) shown below and 1 to 25 parts by mass of at least one specific sulfur-containing silane compound as a silane coupling agent: Aac≦−0.76×(CTAB)+274  (A) (ignition loss)−(heating loss)≦3  (B).

摘要翻译： 一种充气轮胎，其通过使用含有100质量份的包含天然橡胶和二烯基合成橡胶中的至少一种的橡胶组分的橡胶组合物，20至150质量份作为填料的沉淀二氧化硅，其中十六烷基三甲基溴化铵吸附 比表面积（CTAB）（m2 / g）和通过粒度分布的声学测量确定的一次聚集体的直径（nm）的模式Aac满足下面的等式（A），其中灼烧损失 加热损失（在105℃下加热2小时时的质量降低％）满足下面所示的式（B）和1〜25质量份的至少一种具体的 含硅硅烷化合物作为硅烷偶联剂：Aac@-0.76×（CTAB）+274（A）（点火损耗） - （加热损失）@ 3（B）。

公开(公告)号：US20100105805A1

公开(公告)日：2010-04-29

申请号：US12532972

申请日：2008-03-26

申请人： Naohiro Sasaka

发明人： Naohiro Sasaka

IPC分类号： C08J5/14

CPC分类号： C08J3/203 ,  B60C1/0016 ,  C08J2307/00 ,  C08J2309/00 ,  C08K3/36 ,  C08K5/5419 ,  C08K5/548 ,  C08K5/549 ,  C08L7/00 ,  C08L9/00 ,  C08L9/06 ,  C08L21/00 ,  C08L2205/02 ,  C08L2666/08

摘要： A process for producing a rubber composition for tire treads which comprises a step of master batch mixing comprising mixing 20 to 150 parts by mass of silica (B), 1 to 30 parts by mass of a silane coupling agent (C) and a compound promoting reaction of silica and a silane coupling agent (D) with 100 parts by mass of a rubber component (A) comprising at least one of natural rubber and synthetic diene-based rubbers; and a step of final mixing comprising mixing a master batch obtained in the step of master batch mixing, a vulcanizing agent and a vulcanization accelerator. The rubber composition obtained in accordance with the above process increases abrasion resistance and also improves processability and productivity in the steps of mixing and extrusion.

摘要翻译： 一种轮胎胎面用橡胶组合物的制造方法，其特征在于，包括将20〜150质量份二氧化硅（B），1〜30质量份的硅烷偶联剂（C）和促进剂 二氧化硅和硅烷偶联剂（D）与100质量份包含天然橡胶和合成二烯类橡胶中的至少一种的橡胶组分（A）的反应; 和最终混合的步骤，包括混合在母料混合步骤中获得的母料，硫化剂和硫化促进剂。 根据上述方法获得的橡胶组合物增加耐磨性，并且还改善了混合和挤出步骤中的加工性和生产率。

公开(公告)号：US06376593B1

公开(公告)日：2002-04-23

申请号：US09615697

申请日：2000-07-13

申请人： Naohiro Sasaka ,  Yoichiro Kondo

发明人： Naohiro Sasaka ,  Yoichiro Kondo

IPC分类号： C08K334

CPC分类号： B60C19/08 ,  B60C1/0016 ,  B60C11/00 ,  B60C11/005 ,  C08K3/04 ,  C08L7/00 ,  C08L9/00 ,  C08L9/06 ,  C08L2205/02 ,  C08L2666/08

摘要： A rubber composition and a pneumatic tire formed by using the rubber composition is provided which has excellent snow and ice control and braking performance on snowy and/or icy road surface and provides a satisfactory wet skid performance. The present invention is a rubber composition and pneumatic tire formed using the rubber composition in at least the tread portion thereof, the rubber composition comprising a 100 parts by weight of rubber component comprising (1) 5 percent by weight to 50 percent by weight of low molecular weight butadiene rubber (BR) having a cis 1,4-structure of 60 mol % to 98 mol % and a weight average molecular weight (Mw) of 5000 to 80000; and (2) 50 percent by weight to 90 percent by weight of styrene-butadiene rubber (SBR) having a bound styrene content of 15 percent by weight to 45 percent by weight and amount of a vinyl bonding in the butadiene portion of 7 mol % to 60 mol %; and 40 parts by weight to 95 parts by weight of silica.

摘要翻译： 提供了一种通过使用该橡胶组合物形成的橡胶组合物和充气轮胎，其在积雪和/或冰冷的路面上具有优异的积雪和冰控制和制动性能，并提供令人满意的防滑性能。 本发明是在至少其胎面部分中使用橡胶组合物形成的橡胶组合物和充气轮胎，橡胶组合物包含100重量份的橡胶组分，其包含（1）5重量％至50重量％的低 具有60mol％至98mol％的顺式1,4-结构的分子量丁二烯橡胶（BR）和5000至80000的重均分子量（Mw）; 和（2）50重量％〜90重量％的苯乙烯含量为15重量％〜45重量％的苯乙烯 - 丁二烯橡胶（SBR），丁二烯部分中的乙烯基键的量为7摩尔％ 至60mol％; 和40重量份至95重量份的二氧化硅。

公开(公告)号：US20110207847A1

公开(公告)日：2011-08-25

申请号：US12810706

申请日：2008-12-26

申请人： Naohiro Sasaka ,  Takumi Kimura

发明人： Naohiro Sasaka ,  Takumi Kimura

IPC分类号： C08K3/36

CPC分类号： B60C1/0016 ,  C08C19/44 ,  C08F8/32 ,  C08K3/36 ,  C08K5/548 ,  C08L9/06 ,  C08L15/00 ,  C08L21/00 ,  Y02T10/862 ,  C08F212/08 ,  C08L2666/08

摘要： A tire using, for a tread, a rubber composition comprising (A) a rubber component comprising 15 to 70% by mass of a styrene-butadiene copolymer modified with an amine-based functional group and (B) silica having a specific surface area by cetyltrimethylammonium bromide (CTAB) adsorption of 60 to 130 m2/g and a specific surface area by nitrogen adsorption (N2SA) in accordance with the BET method of 70 to 140 m2/g in an amount of 20 to 150 parts by mass based on 100 parts by mass of the rubber component. The tire exhibits excellent abrasion resistance in combination with decreased rolling resistance (small heat buildup) and excellent steering stability which is typically expressed by excellent wet skid resistance.

摘要翻译： 一种轮胎，其特征在于，对于胎面，使用橡胶组合物，所述橡胶组合物含有（A）含有15〜70质量％的用胺系官能团改性的苯乙烯 - 丁二烯共聚物的橡胶成分，（B）比表面积的二氧化硅 十六烷基三甲基溴化铵（CTAB）的吸附量为60〜130m2 / g，氮吸附比率（N2SA）为70〜140m2 / g，BET为70〜140m2 / g，相对于100 质量份的橡胶成分。 该轮胎具有优异的耐磨性，同时具有降低的滚动阻力（小的积聚）和优异的操纵稳定性，这通常以优异的耐湿滑性表现。

公开(公告)号：US06212947B1

公开(公告)日：2001-04-10

申请号：US09303664

申请日：1999-05-03

申请人： Akiyoshi Shimizu ,  Naoto Yamagishi ,  Hiroshi Mouri ,  Naohiro Sasaka ,  Hiroshi Kobayashi ,  Tetsunori Haraguchi ,  Kohshi Katoh

发明人： Akiyoshi Shimizu ,  Naoto Yamagishi ,  Hiroshi Mouri ,  Naohiro Sasaka ,  Hiroshi Kobayashi ,  Tetsunori Haraguchi ,  Kohshi Katoh

IPC分类号： G01N1902

CPC分类号： G01M17/02

摘要： A wear resistance index G1 of a tire whose wear life is to be estimated is measured by the Lambourn abrasion tester. Then, friction energies in free rolling, when the tire is fitted with a toe angle, under application of a side force, under application of a braking force and under application of a driving force of the tire are measured. An expected value of the wear life T1 is calculated using the wear resistance index G1 and the friction energies thus obtained and the wear life of the tire is estimated on the basis of the expected value of the wear life T1. The wear life of a tire can be estimated accurately in a short time in accordance with the method for estimating a tire wear life of the present invention.

摘要翻译： 磨损寿命要估计的轮胎的耐磨损指数G1通过Lambourn磨损测试仪测量。 然后，测量在施加制动力和施加轮胎的驱动力的情况下，在施加侧向力的情况下，在轮胎装配有脚趾角度的自由滚动中的摩擦力。 使用耐磨损指数G1和由此获得的摩擦力计算磨损寿命T1的预期值，并且基于磨损寿命T1的期望值来估计轮胎的磨损寿命。 根据本发明的轮胎磨损寿命的估计方法，可以在短时间内准确地估计轮胎的磨损寿命。