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    Iron oxide particles
    1.
    发明授权
    Iron oxide particles 失效
    氧化铁颗粒

    公开(公告)号：US5922464A

    公开(公告)日：1999-07-13

    申请号：US908984

    申请日：1997-08-08

    申请人： Kazuyuki Hayashi ,  Minoru Ohsugi ,  Hiroko Morii ,  Koso Aoki

    发明人： Kazuyuki Hayashi ,  Minoru Ohsugi ,  Hiroko Morii ,  Koso Aoki

    IPC分类号： C08K3/08 ,  B32B15/02 ,  C08K3/00 ,  C08K3/18 ,  C08K3/22 ,  C08K9/02 ,  C08L21/00 ,  C09C1/22 ,  C09C1/24 ,  C09C1/34

    CPC分类号： C08K3/22 ,  C08K9/02 ,  C09C1/24 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/32 ,  C01P2004/38 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/19 ,  C01P2006/60 ,  C01P2006/80 ,  Y10T428/2991 ,  Y10T428/2993

    摘要： A rubber or resin composition comprises:0.1 to 10.0 parts by weight of iron oxide particles composed of iron oxide core which contains 0.21 to 2.14 wt % of silicon, calculated as SiO.sub.2, and 0.01 to 10.0 wt %, calculated as SiO.sub.2, of a precipitate composed of silicon, which adheres to the surfaces of said iron oxide core, a sphere ratio, maximum diameter/ minimum diameter, of said iron oxide particles being of 0.7 to 1.0, an average particle diameter of said iron oxide particles being 0.05 to 1.0 .mu.m, a geometric standard deviation .sigma.g of said iron oxide particles which shows the particle size distribution being not more than 1.40, a bulk density of said iron oxide particles being 0.80 to 1.5 g/cm.sup.3, and a surface activity of said iron oxide particles which is indicated by the number of cyclohexanone molecules adsorbed to the surfaces of the iron oxide particles, number of molecules/nm.sup.2, being not more than 1.70; and90 to 99.9 parts by weight of rubber or thermoplastic resin.

    摘要翻译： 橡胶或树脂组合物包含：0.1至10.0重量份由氧化铁芯组成的氧化铁颗粒，其含有0.21至2.14重量％的硅，以SiO 2计，和0.01至10.0重量％，以SiO 2计，沉淀物 由氧化铁芯的表面附着的硅构成，所述氧化铁粒子的球体比，最大直径/最小直径为0.7〜1.0，所述氧化铁粒子的平均粒径为0.05〜1.0μm m，所述氧化铁颗粒的几何标准偏差σg，其显示出不大于1.40的粒度分布，所述氧化铁颗粒的堆积密度为0.80至1.5g / cm 3，所述氧化铁颗粒的表面活性 其由吸附在氧化铁颗粒表面上的环己酮分子的数目表示，分子数/ nm 2不大于1.70; 和90〜99.9重量份的橡胶或热塑性树脂。

    Rubber or resin composition
    2.
    发明授权
    Rubber or resin composition 失效
    橡胶或树脂组合物

    公开(公告)号：US5693690A

    公开(公告)日：1997-12-02

    申请号：US628018

    申请日：1996-04-04

    申请人： Kazuyuki Hayashi ,  Minoru Ohsugi ,  Hiroko Morii ,  Koso Aoki

    发明人： Kazuyuki Hayashi ,  Minoru Ohsugi ,  Hiroko Morii ,  Koso Aoki

    IPC分类号： C08K3/08 ,  B32B15/02 ,  C08K3/00 ,  C08K3/18 ,  C08K3/22 ,  C08K9/02 ,  C08L21/00 ,  C09C1/22 ,  C09C1/24 ,  C09C1/34 ,  C08K9/06 ,  C08K3/36 ,  C08K9/10

    CPC分类号： C08K3/22 ,  C08K9/02 ,  C09C1/24 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/32 ,  C01P2004/38 ,  C01P2004/51 ,  C01P2004/61 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/19 ,  C01P2006/60 ,  C01P2006/80 ,  Y10T428/2991 ,  Y10T428/2993

    摘要： A rubber or resin composition comprises: 0.1 to 10.0 parts by weight of iron oxide particles composed of iron oxide core which contains 0.21 to 2.14 wt % of silicon, calculated as SiO.sub.2, and 0.01 to 10.0 wt %, calculated as SiO.sub.2, of a precipitate composed of silicon, which adheres to the surfaces of said iron oxide core, a sphere ratio, maximum diameter/minimum diameter, of said iron oxide particles being of 0.7 to 1.0, an average particle diameter of said iron oxide particles being 0.05 to 1.0 .mu.m, a geometric standard deviation .sigma.g of said iron oxide particles which shows the particle size distribution being not more than 1.40, a bulk density of said iron oxide particles being 0.80 to 1.5 g/cm.sup.3, and a surface activity of said iron oxide particles which is indicated by the number of cyclohexanone molecules adsorbed to the surfaces of the iron oxide particles, number of molecules/nm.sup.2, being not more than 1.70; and 90 to 99.9 parts by weight of rubber or thermoplastic resin.

    摘要翻译： 橡胶或树脂组合物包含：0.1至10.0重量份由氧化铁芯组成的氧化铁颗粒，其含有0.21至2.14重量％的硅，以SiO 2计，和0.01至10.0重量％，以SiO 2计，沉淀物 由氧化铁芯的表面附着的硅构成，所述氧化铁粒子的球体比，最大直径/最小直径为0.7〜1.0，所述氧化铁粒子的平均粒径为0.05〜1.0μm m，所述氧化铁颗粒的几何标准偏差σg，其显示出不大于1.40的粒度分布，所述氧化铁颗粒的堆积密度为0.80至1.5g / cm 3，所述氧化铁颗粒的表面活性 其由吸附在氧化铁颗粒表面上的环己酮分子的数目表示，分子数/ nm 2不大于1.70; 和90〜99.9重量份的橡胶或热塑性树脂。

    Black magnetic iron oxide particles having high breakdown voltage
    5.
    发明授权
    Black magnetic iron oxide particles having high breakdown voltage 有权
    具有高击穿电压的黑色磁性氧化铁颗粒

    公开(公告)号：US07572505B2

    公开(公告)日：2009-08-11

    申请号：US11785737

    申请日：2007-04-19

    申请人： Naoki Uchida ,  Ryo Iwai ,  Mamoru Kamigaki ,  Shinji Uemoto ,  Koso Aoki ,  Hiromitsu Misawa

    发明人： Naoki Uchida ,  Ryo Iwai ,  Mamoru Kamigaki ,  Shinji Uemoto ,  Koso Aoki ,  Hiromitsu Misawa

    IPC分类号： B32B5/16

    CPC分类号： H01F1/36 ,  C01G49/08 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/42 ,  C08K3/22 ,  C08K9/02 ,  C09C1/24 ,  C09D7/62 ,  C09D7/68 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/107 ,  Y10S428/90 ,  Y10T428/257 ,  Y10T428/2991 ,  Y10T428/2993

    摘要： The present invention relates to black magnetic iron oxide particles comprising core particles and a surface layer formed on a surface of the respective core particles which is made of a compound of at least one alkali earth metal element selected from the group consisting of Mg, Ca, Sr and Ba and an aluminum element, in which a content of the at least one alkali earth metal element present in the surface layer is from 100 ppm to 1000 ppm on the basis of a whole weight of the black magnetic iron oxide particles; a content of the aluminum element present in the surface layer is from 1000 ppm to 20000 ppm on the basis of a whole weight of the black magnetic iron oxide particles; a ratio [A/B] of the content [A (ppm)] of the aluminum element to the content [B (ppm)] of the at least one alkali earth metal element present in the surface layer is from 1 to 100; and a molded product comprising said black magnetic iron oxide particles has a breakdown voltage of not less than 400 V/cm.

    摘要翻译： 本发明涉及包含核心颗粒的黑色磁性氧化铁颗粒和形成在各个芯颗粒的表面上的表面层，该表面层由选自Mg，Ca， Sr和Ba以及基于黑色磁性氧化铁颗粒的总重量，表面层中存在的至少一种碱土金属元素的含量为100ppm至1000ppm的铝元素; 基于黑色磁性氧化铁颗粒的总重量，表面层中存在的铝元素的含量为1000ppm至20000ppm; 铝元素的含量[A（ppm）]与表面层中的至少一种碱土类金属元素的含量[B（ppm）]的比[A / B]为1〜100， 并且包含所述黑色磁性氧化铁颗粒的成型体具有不低于400V / cm的击穿电压。

    Magnetic iron oxide particles and magnetic toner using the same
    6.
    发明授权
    Magnetic iron oxide particles and magnetic toner using the same 有权
    磁性氧化铁颗粒和使用其的磁性调色剂

    公开(公告)号：US07144626B2

    公开(公告)日：2006-12-05

    申请号：US11097377

    申请日：2005-04-04

    申请人： Hiroshi Akai ,  Koso Aoki ,  Hiromitsu Misawa ,  Naoki Uchida ,  Ryo Iwai

    发明人： Hiroshi Akai ,  Koso Aoki ,  Hiromitsu Misawa ,  Naoki Uchida ,  Ryo Iwai

    IPC分类号： B32B5/16 ,  B32B9/00 ,  B32B15/02 ,  B32B17/02 ,  B32B19/00

    CPC分类号： H01F1/344 ,  Y10T428/2982

    摘要： There are provided magnetic iron oxide particles having an average particle diameter (Dp50) of primary particles of 0.05 to 0.3 μm, an average particle diameter (Da50) of secondary particles of 0.055 to 0.9 μm, and a ratio of the average particle diameter (Da50) of the secondary particles to the average particle diameter (Dp50) of the secondary particles (Da50/Dp50) of 1.1 to 3.0, as well as a magnetic toner containing the magnetic iron oxide particles. The magnetic iron oxide particles of the present invention are in the form of small agglomerated particles and exhibit an excellent dispersibility, and the magnetic toner using the magnetic iron oxide particles is excellent in electrification stability.

    摘要翻译： 提供了一次粒子的平均粒径（Dp <50％）为0.05〜0.3μm的磁性氧化铁粒子，二次粒子的平均粒径（Da <50％） 为0.055〜0.9μm，二次粒子的平均粒径（Da <50％）与二次粒子的平均粒径（Dp <50） Da 50 / Dp 50 50）为1.1〜3.0，以及含有磁性氧化铁颗粒的磁性调色剂。 本发明的磁性氧化铁颗粒呈小团聚颗粒的形式并表现出优异的分散性，并且使用磁性氧化铁颗粒的磁性调色剂具有优良的起电稳定性。