Amorphous, fine silica particles, and method for their production and their use
    1.
    发明授权
    Amorphous, fine silica particles, and method for their production and their use 失效
    无定形,细二氧化硅颗粒及其制备方法及其用途

    公开(公告)号:US07083770B2

    公开(公告)日:2006-08-01

    申请号:US10049902

    申请日:2001-06-20

    IPC分类号: C01B33/18 C08K3/36

    摘要: The amorphous-silica particle having 0.1–0.7 μm of the average particle diameter, 5–30 m2/g of the specific surface area, less than 40% of the dispersion coefficient, and 20 μC/m2 of the absolute value of the triboelectrostatic charge, can be obtained, by setting flame temperature to more than melting point of silica, raising the silica concentration in a flame, and staying the generated silica particle in the flame for a short time to be grew up. Since this silica particle has a particle shape being near a true sphere, and a particle size of said particle is remarkably uniform, so it is suitable for a filler of a semiconductor sealing agent or various materials, etc. In addition, since said particle has strong electrification, it is also suitable for an outer or an inner additional agent of a toner for an electronic photograph, a photo conductor material for a electronic photograph, and a material of an electric charge transportation layer, etc.

    摘要翻译: 平均粒径为0.1-0.7μm,比表面积为5-30m 2 / g,分散系数小于40%的非晶二氧化硅颗粒和20μm/ m 2 通过将火焰温度设定为大于二氧化硅的熔点,提高火焰中的二氧化硅浓度,并将所产生的二氧化硅粒子停留在火焰中,可以获得摩擦电沉积电荷的绝对值的“2” 在短时间内长大。 由于该二氧化硅粒子具有接近真实球体的粒子形状,并且所述粒子的粒径非常均匀,因此适合于半导体密封剂或各种材料等的填料。此外,由于所述粒子具有 强电气化,也适用于电子照相用调色剂的外部或内部附加剂,电子照相用光导体材料和电荷输送层的材料等。

    Fine powder of hydrophobic metal oxide, method for producing it, and
toner composition for electrophotography
    2.
    发明授权
    Fine powder of hydrophobic metal oxide, method for producing it, and toner composition for electrophotography 有权
    疏水性金属氧化物的细粉末,其制造方法和电子照相用调色剂组合物

    公开(公告)号:US6077640A

    公开(公告)日:2000-06-20

    申请号:US306798

    申请日:1999-05-07

    IPC分类号: G03G9/097 G03G9/00 B32B27/38

    摘要: A fine powder of a hydrophobic metal oxide is provided which is produced through surface treatment of fine powder of a metal oxide with an epoxy compound and an alkylsilazane or ammonia thereby ring-opening the epoxy groups in the surface of the fine powder followed by introducing an amino group and an alkylsilyl group, or an amino group into the ring-opened epoxy groups. The fine hydrophobic metal oxide powder has good dispersability, flowability and electrification properties, and has good time-dependent stability. A toner composition for electrophotography that contains the fine hydrophobic metal oxide powder has stable and good imaging capabilities for a long period of time. Also provided is a method for modifying the surface of the fine metal oxide powder with a surface modifier, in which ammonia is introduced into the reaction system prior to the treatment of the fine powder with the surface modifier.

    摘要翻译: 提供了通过用环氧化合物和烷基硅氮烷或氨表面处理金属氧化物的细粉而制备的疏水性金属氧化物的细粉末,从而使细粉表面中的环氧基开环,然后引入 氨基和烷基甲硅烷基,或氨基组成开环的环氧基。 细疏水性金属氧化物粉末具有良好的分散性,流动性和起电性,并且具有良好的时间依赖性稳定性。 含有微细疏水性金属氧化物粉末的电子照相用调色剂组合物长期稳定且良好的成像能力。 还提供了一种用表面改性剂改性金属氧化物粉末的表面的方法,其中在用表面改性剂处理细粉之前将氨引入反应体系中。

    Ultrafine particle silicon dioxide and process for producing the same
    3.
    发明授权
    Ultrafine particle silicon dioxide and process for producing the same 有权
    超微粒子二氧化硅及其制造方法

    公开(公告)号:US06352679B1

    公开(公告)日:2002-03-05

    申请号:US09395142

    申请日:1999-09-14

    IPC分类号: C01B3312

    摘要: An ultrafine particle silicon dioxide which comprises silicon dioxide powders in the range of ultrafine particles having a BET specific surface area of 350 m2/g or more and has a ratio of BET/CTAB specific surface areas of 0.6 to 1.1, a number average of primary particle diameters of 1 to 20 nm, void volume measured with a mercury porosimeter of 0.1 to 1.0 ml/g and linseed oil absorption of 350 to 600 ml/100 g. According to the present invention, the ultrafine particle silicon dioxide can provide various kinds of polymers with excellent mechanical strength and transparency as a filler.

    摘要翻译: 一种超微粒子二氧化硅,其特征在于,在BET比表面积为350m 2 / g以上的超微粒子范围内的二氧化硅粉末,BET / CTAB比表面积的比例为0.6〜1.1, 粒径为1至20nm,用水银孔隙度计测量的空隙体积为0.1至1.0ml / g,亚麻籽油吸收为350至600ml / 100g。 根据本发明,超细颗粒二氧化硅可以提供具有优异的机械强度和透明度的各种聚合物作为填料。

    Low viscosity-increment fumed-silica and its slurry
    4.
    发明授权
    Low viscosity-increment fumed-silica and its slurry 有权
    低粘度增量热解法二氧化硅及其浆料

    公开(公告)号:US07255843B2

    公开(公告)日:2007-08-14

    申请号:US10326542

    申请日:2002-12-23

    IPC分类号: C01B33/14 C09C1/28 C09D17/00

    摘要: A fumed-silica, which can make a slurry having sufficient wettability to a polar liquid, excellent dispersibility, and low viscosity even in the high concentration, and a slurry thereof. A fumed-silica and its slurry are provided, wherein the water content is controlled so that a weight loss after drying Y, and a dynamic wetting rate to water Z, have specified values.

    摘要翻译: 可以使极性液体具有足够润湿性的浆料,即使高浓度也具有优异的分散性和低粘度的气相二氧化硅及其浆料。 提供了一种热解法二氧化硅及其浆料,其中控制含水量使得干燥后的重量减少Y和对水Z的动态润湿速率具有规定值。

    Fine powder of hydrophobic titanium oxide, and method for producing it
    8.
    发明授权
    Fine powder of hydrophobic titanium oxide, and method for producing it 有权
    疏水性氧化钛的细粉末及其制造方法

    公开(公告)号:US06224980B1

    公开(公告)日:2001-05-01

    申请号:US09282173

    申请日:1999-03-31

    IPC分类号: B32B516

    摘要: A fine powder of hydrophobic titanium oxide, which, when added to toner powder, gives it high flowability and good electrification stability. The titanium oxide is prepared by hydrolyzing a volatile titanium compound while in a high-temperature vapor-phase condition, in the presence of a combustible or incombustible gas, and has a BET specific surface area of from 55 to 150 m2/g and an anatase/rutile crystal structure with a ratio of anatase falling between 0.3 and 0.98. It is processed for surface modification with a silane coupling agent and/or a silicone compound to produce a fine powder of hydrophobic titanium oxide.

    摘要翻译: 疏水性氧化钛的细粉末,当添加到调色剂粉末中时,赋予其高流动性和良好的起电稳定性。 在可燃或不燃性气体的存在下,在高温气相条件下水解挥发性钛化合物,BET比表面积为55〜150m 2 / g,锐钛型 /锐钛矿晶体结构,其锐钛矿的比例在0.3-0.98之间。 用硅烷偶联剂和/或硅氧烷化合物处理表面改性以产生疏水性氧化钛的细粉末。

    Surface modified inorganic oxide powder and its use
    9.
    发明申请
    Surface modified inorganic oxide powder and its use 审中-公开
    表面改性无机氧化物粉末及其用途

    公开(公告)号:US20050203214A1

    公开(公告)日:2005-09-15

    申请号:US10632792

    申请日:2003-08-04

    IPC分类号: C08K3/10

    CPC分类号: C08K9/04

    摘要: [Problem to be Solved]: To provide a surface modified inorganic oxide powder having a reduced amount of residual volatile components. [Solution]: The surface modified inorganic oxide powder is obtained by the surface treatment of an inorganic oxide powder with the use of a treating solution of long-chain alkylsilane and catalysts in a solvent or by the heat treatment of the inorganic oxide powder between the volatilization temperature of the organic volatile components and the decomposition temperature of the treating agents after the surface modification, to reduce the amount of the volatile components to less than 30 ppm, preferably less than 10 ppm. And this surface modified inorganic oxide powder is suited in use as the additive for powder coating materials, toners for electrophotography or the like; the viscosity modifier for the resin of an adhesive, a coating material or the like; the reinforcing filler for natural rubber, synthetic rubbers, engineering plastics or the like; the anti-block agent for films of polyethylene, polyester or the like; and the adhesive and sealant for various resins.

    摘要翻译: [待解决的问题]:提供具有减少的残留挥发成分量的表面改性无机氧化物粉末。 [溶液]:表面改性无机氧化物粉末是通过使用长链烷基硅烷处理溶液和催化剂在溶剂中的无机氧化物粉末的表面处理或通过无机氧化物粉末在 有机挥发成分的挥发温度和表面改性后处理剂的分解温度,将挥发成分的量减少到30ppm以下,优选小于10ppm。 该表面改性无机氧化物粉末适合用作粉末涂料添加剂,电子照相用调色剂等; 用于粘合剂,涂料等的树脂的粘度调节剂; 天然橡胶增强填料,合成橡胶,工程塑料等; 聚乙烯,聚酯等薄膜的防粘剂; 和各种树脂的粘合剂和密封剂。