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    • 11. 发明授权
    • Rubber composition for tire treads
    • 轮胎胎面橡胶组合物
    • US5430086A
    • 1995-07-04
    • US165164
    • 1993-12-10
    • Yuichi SaitoToru FukumotoShuji ImaokaKeisaku YamamotoKizuku WakatsukiMitsuji Tsuji
    • Yuichi SaitoToru FukumotoShuji ImaokaKeisaku YamamotoKizuku WakatsukiMitsuji Tsuji
    • B60C1/00C08K3/04C08L9/06
    • C08K3/04B60C1/0016C08L9/06C08L2205/02C08L7/00C08L9/00C08L9/08Y10S152/905
    • A rubber composition for tire treads comprising a rubber component consisting essentially of (A) 20 to 100% by weight of a solution-polymerized styrene-butadiene copolymer rubber having a Mooney viscosity ML.sub.1+4 of 30 to 200 at 100.degree. C. prepared by copolymerization of styrene, butadiene and a polyvinyl aromatic compound followed by coupling with a trifunctional or tetrafunctional coupling agent, and (B) 0 to 80% by weight of at least one rubber selected from the group consisting of an emulsion-polymerized styrene-butadiene rubber, a butadiene rubber, natural rubber and a synthetic polyisoprene rubber; and (C) 50 to 250 parts by weight of a carbon black having an iodine adsorption number of not less than 60 mg/g and an oil absorption of not less than 110 ml/100 g per 100 parts by weight of said rubber component; the tan .delta. peak temperature Tg of the cured product of said rubber composition being from -40.degree. to +5.degree. C. The tread rubber composition can be processed without causing bagging with a good dispersibility of carbon black and provides tires having a low rolling resistance and a high grip characteristic.
    • 一种用于轮胎胎面的橡胶组合物,其包含基本上由(A)20-100重量%的在100℃下门尼粘度ML1 + 4为30至200的溶液聚合的苯乙烯 - 丁二烯共聚物橡胶组成的橡胶组分,其由 苯乙烯,丁二烯和聚乙烯基芳族化合物的共聚合,然后与三官能或四官能偶联剂偶合,和(B)0至80重量%的至少一种选自乳液聚合的苯乙烯 - 丁二烯橡胶 丁二烯橡胶,天然橡胶和合成聚异戊二烯橡胶; 和(C)每100重量份所述橡胶组分50至250重量份的碘吸附数不小于60mg / g和吸油量不小于110ml / 100g的炭黑; 所述橡胶组合物的固化产物的tanδ峰值温度Tg为-40℃至+5℃。胎面橡胶组合物可以在不引起炭黑的良好分散性的情况下进行加工而且具有低滚动阻力的轮胎 和高抓地力特性。
    • 12. 发明授权
    • Butadiene copolymer and process for preparing same
    • 丁二烯共聚物及其制备方法
    • US5290878A
    • 1994-03-01
    • US72488
    • 1993-06-07
    • Keisaku YamamotoKizuku WakatsukiMitsuji TsujiYuichi Saito
    • Keisaku YamamotoKizuku WakatsukiMitsuji TsujiYuichi Saito
    • C08C19/42C08F8/00C08F36/00C08F36/06C08F236/06C08F236/10C08K5/00C08L9/00C08F8/42
    • C08F236/10
    • An elastomeric butadiene copolymer prepared by a process which comprises copolymerizing butadiene, a polyvinyl aromatic compound and optionally styrene in a hydrocarbon solvent in the presence of an organolithium polymerization initiator and subjecting the resulting copolymer having lithium at the polymer end or ends to a coupling reaction with a trifunctional or tetrafunctional coupling agent, said butadiene copolymer satisfying the following conditions: (a) the content of styrene is at most 50% by weight, (b) the content of vinyl bonds in the butadiene portion is from 10 to 90% by weight, (c) the molecular weight distribution curve obtained by a high performance liquid chromatography has at least three peaks, and 5 to 60% by weight of all the polymer chains have a molecular weight which is at least 5 times the molecular weight in terms of standard polystyrene corresponding to the peak appearing on the lowest molecular weight side of the high performance liquid chromatogram, and (d) the Mooney viscosity (ML.sub.1+4, 100.degree. C.) is from 30 to 200. The butadiene copolymer has an improved processability with excellent resilience, wet grip property, abrasion resistance and mechanical properties, and is suitable for tire use.
    • 一种弹性体丁二烯共聚物,该方法包括在有机锂聚合引发剂存在下,使丁二烯,聚乙烯基芳族化合物和任选的苯乙烯在烃溶剂中共聚,并将所得到的聚合物末端或末端的锂共聚物与 所述丁二烯共聚物满足以下条件:(a)苯乙烯含量至多为50重量%,(b)丁二烯部分中的乙烯基键含量为10〜90重量% ,(c)通过高效液相色谱获得的分子量分布曲线具有至少三个峰,并且所有聚合物链的5至60重量%的分子量的分子量至少为分子量的5倍 对应于在高效液相色谱的最低分子量侧出现的峰的标准聚苯乙烯,和(d)t 门尼粘度(ML1 + 4,100℃)为30〜200。丁二烯共聚物具有优异的回弹性,湿抓地性,耐磨性和机械性能的加工性,适用于轮胎使用。
    • 19. 发明申请
    • SEMICONDUCTOR ELEMENT AND METHOD FOR MANUFACTURING THE SAME
    • 半导体元件及其制造方法
    • US20110101354A1
    • 2011-05-05
    • US12864461
    • 2009-01-08
    • Yuichi SaitoMasao MoriguchiAkihiro Kohno
    • Yuichi SaitoMasao MoriguchiAkihiro Kohno
    • H01L33/16H01L21/336
    • H01L29/78669H01L29/66765H01L29/78609H01L29/78618H01L29/78678
    • A semiconductor device 101 includes: a substrate 1; an active layer 4 provided on the substrate 1, the active layer 4 including a channel region 4c and a first region 4a and a second region 4b that are respectively located on opposite sides of the channel region 4c; a first contact layer 6a and a second contact layer 6b which are respectively in contact with the first region 4a and the second region 4b of the active layer 4; a first electrode 7 electrically coupled to the first region 4a via the first contact layer 6a; a second electrode 8 electrically coupled to the second region 4b via the second contact layer 6b; and a gate electrode 2 which is provided such that a gate insulating layer 3 is interposed between the gate electrode 2 and the active layer 4, the gate electrode 2 being configured to control a conductivity of the channel region 4c. The active layer 4 contains silicon. The semiconductor device further includes an oxygen-containing silicon layer 5 between the active layer 4 and the first and second contact layers 6a, 6b. The oxygen-containing silicon layer 5 contains oxygen at a concentration higher than the active layer 4 and the first and second contact layers 6a, 6b.
    • 半导体器件101包括:衬底1; 设置在基板1上的有源层4,有源层4包括分别位于沟道区域4c的相对侧上的沟道区域4c和第一区域4a和第二区域4b; 分别与有源层4的第一区域4a和第二区域4b接触的第一接触层6a和第二接触层6b; 经由第一接触层6a电耦合到第一区域4a的第一电极7; 经由第二接触层6b电耦合到第二区域4b的第二电极8; 栅极电极2被设置为使得栅极绝缘层3插入在栅极电极2和有源层4之间,栅电极2被配置为控制沟道区域4c的导电性。 有源层4含有硅。 半导体器件还包括有源层4和第一和第二接触层6a,6b之间的含氧硅层5。 含氧硅层5含有浓度高于有源层4和第一和第二接触层6a,6b的氧。