利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

17 条记录 (耗时 0.028 秒)

    Polypropylene resin composition
    2.
    发明授权
    Polypropylene resin composition 失效
    聚丙烯树脂组合物

    公开(公告)号：US6156836A

    公开(公告)日：2000-12-05

    申请号：US220440

    申请日：1998-12-24

    申请人： Kunio Iwanami ,  Akira Kobayashi ,  Mitsuhiro Murayama ,  Yuji Fujita ,  Takayuki Nagai ,  Takao Nomura ,  Masatoshi Matsuda ,  Osamu Kito ,  Hisayuki Iwai

    发明人： Kunio Iwanami ,  Akira Kobayashi ,  Mitsuhiro Murayama ,  Yuji Fujita ,  Takayuki Nagai ,  Takao Nomura ,  Masatoshi Matsuda ,  Osamu Kito ,  Hisayuki Iwai

    IPC分类号： C08L53/00 ,  C08L53/02 ,  C08K3/34 ,  C08L23/12 ,  C08L23/16

    CPC分类号： C08L53/00 ,  C08L53/02 ,  C08L53/025

    摘要： This invention provides polypropylene resin compositions which have sharply improved balance of physical properties in comparison with the related polypropylene materials, are materials that can be used in both interior and exterior parts of automobiles, have excellent thin-wall moldability and can sharply reduce generation of flow marks. Particularly, it provides a polypropylene resin composition which comprises specified amounts of (A) a specified ethylene-propylene block copolymer, (B) a specified thermoplastic elastomer and (C) talc, wherein it has specified values of physical properties measured by ASTM and has a degree of b-axis orientation of 720 or more which is calculated from the ratio of differential peak intensities measured by wide-angle X-ray diffraction of the central area of an ASTM No. 1 dumbbell prepared by injection molding.

    摘要翻译： 本发明提供与相关聚丙烯材料相比具有明显改善的物理平衡平衡的聚丙烯树脂组合物，可用于汽车内外部的材料，具有优异的薄壁成型性，并可大大减少流动的产生 分数。 特别地，它提供了一种聚丙烯树脂组合物，其包含规定量的（A）特定的乙烯 - 丙烯嵌段共聚物，（B）特定的热塑性弹性体和（C）滑石，其中其具有通过ASTM测量的具体的物理性质值，并具有 由通过注射成型制备的ASTM No.1哑铃的中心区域的广角X射线衍射测得的差峰值强度的比率计算出的720°以上的b轴取向度。

    Crystalline propylene block-copolymer composition for use in automobile parts
    3.
    发明授权
    Crystalline propylene block-copolymer composition for use in automobile parts 失效
    用于汽车零件的结晶丙烯嵌段共聚物组合物

    公开(公告)号：US6121363A

    公开(公告)日：2000-09-19

    申请号：US251331

    申请日：1999-02-17

    申请人： Ikunori Sakai ,  Mikio Hashimoto ,  Takayuki Nagai ,  Takao Nomura ,  Masatoshi Matsuda ,  Osamu Kito ,  Hisayuki Iwai

    发明人： Ikunori Sakai ,  Mikio Hashimoto ,  Takayuki Nagai ,  Takao Nomura ,  Masatoshi Matsuda ,  Osamu Kito ,  Hisayuki Iwai

    IPC分类号： B29C45/00 ,  B29K23/00 ,  C08K3/34 ,  C08L53/00 ,  C08L53/02 ,  C08K3/22 ,  C08L23/10

    CPC分类号： C08L53/00

    摘要： A crystalline propyleiie block-copolymer composition exhibiting superior flowability upon molding for use in automobile parts, which composition comprises 41 to 71% by weight of a crystalline propylene block-copolymer composed of a propylene homopolymer portion (Fp) and an ethylene/propylene random copolymer portion (Fc) and having an ethylene content of 1 to 10% by weight and a melt flow rate (MFR) of 20 to 100 g/10 min.; 12 to 22% by weight of a first hydrogenated product of a block-copolymer having a relatively smaller stylene content; 2 to 12% by weight of a second hydrogenated product of a block-copolymer having a relatively greater stylene content; and 15 to 25% by weight of talc, wherein the propylene homopolymer portion (Fp) contains 20 to 50% by weight of a low molecular weight propylene homopolymer having an MFR of 400 to 1,000 g/10 min., the average MFR being 100 to 350 g/10 min. and the isotactic pentad fraction being at least 98%, and wherein the said (Fc) has an intrinsic viscosity of 7 dl/g or higher.

    摘要翻译： 一种结晶丙烯嵌段共聚物组合物，其成型用于汽车部件时具有优异的流动性，该组合物包含41至71重量％的由丙烯均聚物部分（Fp）和乙烯/丙烯无规共聚物组成的结晶丙烯嵌段共聚物 （Fc），乙烯含量为1〜10重量％，熔体流动速率（MFR）为20〜100g / 10分钟。 12至22重量％的具有相对较小的苯乙烯含量的嵌段共聚物的第一氢化产物; 2至12重量％的具有相对较大的苯乙烯含量的嵌段共聚物的第二个氢化产物; 和15〜25重量％的滑石，其中丙烯均聚物部分（Fp）含有20〜50重量％的MFR为400〜1000g / 10分钟的低分子量丙烯均聚物，平均MFR为100 至350g / 10min。 和全同立构五单元组分数为98％以上，其中所述（Fc）的特性粘度为7dl / g以上。

    Thermoplastic resin composition and injection-molded object thereof
    5.
    发明授权
    Thermoplastic resin composition and injection-molded object thereof 有权
    热塑性树脂组合物及其注射成型体

    公开(公告)号：US06759465B1

    公开(公告)日：2004-07-06

    申请号：US09720343

    申请日：2000-12-22

    申请人： Moriyasu Shimojo ,  Kenichi Ohkawa ,  Susumu Kanzaki ,  Takayuki Nagai ,  Takao Nomura ,  Masatoshi Matsuda ,  Hisayuki Iwai

    发明人： Moriyasu Shimojo ,  Kenichi Ohkawa ,  Susumu Kanzaki ,  Takayuki Nagai ,  Takao Nomura ,  Masatoshi Matsuda ,  Hisayuki Iwai

    IPC分类号： C08K334

    CPC分类号： C08L23/10 ,  C08L23/0815 ,  C08L23/16 ,  C08L25/00 ,  C08L53/00 ,  C08L53/02 ,  C08L2205/02 ,  C08L2205/03 ,  C08L2205/035 ,  C08L2666/02 ,  C08L2666/06 ,  C08L2666/04

    摘要： A thermoplastic composition which is obtained by melt-kneading (1) 55 to 75 wt. % crystalline polypropylene resin together with (2) 10 to 30 wt. % elastomer comprising either a rubber containing a vinyl aromatic compound or a mixture thereof with an ethylene/&agr;-olefin random copolymer rubber and (3) 15 to 25 wt. % talc having an average particle diameter of 3 &mgr;m or smaller. The composition satisfies specific requirements with respect to: the long period obtained by X-ray small-angle scattering attributable to the vinyl aromatic-containing rubber in a blend obtained by melt-kneading the ingredients (1) and (2); the shape and diameter of the elastomer particles present near the polypropylene/elastomer interface in the blend; and the difference between the glass transition point of the ingredient (1) and that of the composition attributable to the crystalline polypropylene homopolymer parts. The composition has a satisfactory balance between impact resistance and rigidity and has excellent injection moldability.

    摘要翻译： 通过熔融捏合（1）55〜75重量％ ％结晶聚丙烯树脂与（2）10〜30重量％ 包括含有乙烯基芳族化合物的橡胶或其与乙烯/α-烯烃无规共聚物橡胶的混合物的弹性体，和（3）15至25wt。 平均粒径为3μm以下的滑石粉。 该组合物满足以下特征：通过熔融捏合成分（1）和（2）获得的共混物中通过由含乙烯基芳族化合物橡胶得到的X射线小角度散射得到的长时间; 存在于共混物中聚丙烯/弹性体界面附近的弹性体颗粒的形状和直径; 和成分（1）的玻璃化转变点与归因于结晶聚丙烯均聚物部件的组合物的玻璃化转变点之间的差异。 组合物在耐冲击性和刚性之间具有令人满意的平衡，并且具有优异的注模成型性。

    BRUSHLESS MOTOR DRIVER AND BRUSHLESS MOTOR SYSTEM
    6.
    发明申请
    BRUSHLESS MOTOR DRIVER AND BRUSHLESS MOTOR SYSTEM 失效
    无刷马达驱动器和无刷马达系统

    公开(公告)号：US20120119687A1

    公开(公告)日：2012-05-17

    申请号：US13069576

    申请日：2011-03-23

    申请人： Shigeki Murai ,  Masatoshi Matsuda

    发明人： Shigeki Murai ,  Masatoshi Matsuda

    IPC分类号： H02P6/18

    CPC分类号： H02P6/14

    摘要： The brushless motor driver includes a sample and hold circuit which samples and holds a first value of the first comparison signal in a first case in which a current is forced to flow from a first phase coil of the three-phase brushless motor to a second phase coil and no current is forced to flow to a third phase coil in a first period having a preset setting time and a second value of the first comparison signal in a second case in which a current is forced to flow from the second phase coil to the first phase coil and no current is forced to flow to the third phase coil in a second period having the preset setting time subsequent to the first period. The brushless motor driver includes an addition circuit which adds up the first value and the second value sampled and held by the sample and hold circuit and outputs an addition signal depending upon a result of the addition. The brushless motor driver includes a comparison output circuit which compares a value of the addition signal with a reference voltage and outputs a second comparison signal depending upon a result of the comparison. A position of a rotor in the three-phase brushless motor is discriminated on the basis of the second comparison signal.

    摘要翻译： 无刷电动机驱动器包括采样和保持电路，其在第一种情况下采样并保持第一比较信号的第一值，其中电流被迫从三相无刷电动机的第一相线圈流动到第二相位 线圈，并且在第二种情况下，在第一种情况下，强制电流从第二相线圈流到第一相位线圈，并且在第一时间段内没有电流流过第三相线圈，具有预设的设定时间和第一比较信号的第二值 第一相线圈，并且在具有第一周期之后的预设设定时间的第二周期中，不强制流过第三相线圈。 无刷电动机驱动器包括加法电路，其将由采样保持电路采样和保持的第一值和第二值相加，并根据加法结果输出相加信号。 无刷电动机驱动器包括比较输出电路，其将加法信号的值与参考电压进行比较，并且根据比较结果输出第二比较信号。 基于第二比较信号来判别三相无刷电动机中的转子的位置。