Process for the preparation of high-purity organosilicon disulphanes
    23.
    发明授权
    Process for the preparation of high-purity organosilicon disulphanes 有权
    制备高纯度有机硅二硫化物的方法

    公开(公告)号:US5892085A

    公开(公告)日:1999-04-06

    申请号:US131745

    申请日:1998-08-10

    IPC分类号: C07F7/08 C07F7/18 C09F7/08

    CPC分类号: C07F7/1892

    摘要: The preparation of high-purity organosilicon disulphanes in which, in a two-stage process, elemental sulphur and an anhydrous alkali sulphide in a deficient amount is first reacted with a halogen alkylalkoxysilane, and the sulphur deficit is then made up by the addition of further alkali sulphide.

    摘要翻译: 在两阶段工艺中,将元素硫和缺乏量的无水碱金属硫化物首先与卤代烷基烷氧基硅烷反应制备高纯度有机硅二硫化物,然后通过加入另外的方法制备硫缺乏 碱金属硫化物。

    Aluminium oxide dispersion
    24.
    发明授权
    Aluminium oxide dispersion 有权
    氧化铝分散体

    公开(公告)号:US08562733B2

    公开(公告)日:2013-10-22

    申请号:US11994416

    申请日:2006-06-09

    IPC分类号: C09D1/00

    摘要: Aluminum oxide dispersion, which is stable in a pH range 5 from 5 to 9 and has an aluminum oxide content of at least 40 wt. %, obtainable by dispersing pyrogenically produced aluminum oxide particles in an aqueous phase, wherein one or several at least dibasic hydroxycarboxylic acids present dissolved in the dispersion and at least one salt of a 10 dialkali metal hydrogen phosphate and/or alkali metal dihydrogen phosphate are added to the aqueous phase each mutually independently in a quantity of 0.3−3×10−6 mol/m2 of aluminum oxide specific surface area.

    摘要翻译: 氧化铝分散体,其在5至9的pH范围内稳定,并且具有至少40重量%的氧化铝含量。 通过将热解产生的氧化铝颗粒分散在水相中可获得的,其中加入溶解在分散体中的一种或几种至少二元羟基羧酸和至少一种10碱式金属磷酸氢盐和/或碱金属磷酸二氢盐的盐 相对于水相,各自相互独立地为0.3-3×10 -6 mol / m 2的氧化铝比表面积。

    PROCESS FOR PREPARING SILICON DIOXIDE DISPERSIONS
    26.
    发明申请
    PROCESS FOR PREPARING SILICON DIOXIDE DISPERSIONS 审中-公开
    制备二氧化硅分散体的方法

    公开(公告)号:US20100242801A1

    公开(公告)日:2010-09-30

    申请号:US12741378

    申请日:2008-11-20

    IPC分类号: C04B14/04 C01B33/141

    CPC分类号: C01B33/1417 C01B33/1415

    摘要: Process for preparing an alkaline dispersion of aggregated silicon dioxide particles by dividing a preliminary dispersion within a pH of 3 to 5 into at least two streams, placing these streams under a pressure of at least 50 bar and depressurizing them to a collision point, each via one nozzle, in a grinding chamber, and admixing the dispersion that runs off at the bottom, while still in the grinding chamber, with an alkaline substance in an amount such that the dispersion overall has a pH of more than 7.

    摘要翻译: 通过将3至5的pH范围内的预分散体分成至少两股流,将这些物流放置在至少50巴的压力下并将其减压至碰撞点,从而制备聚集的二氧化硅颗粒的碱性分散体的方法, 一个喷嘴,在研磨室中,并且在仍然在研磨室中的底部上分散的分散体与碱性物质混合,使得分散体总体上的pH值大于7。

    ALUMINIUM OXIDE-CONTAINING DISPERSION
    28.
    发明申请
    ALUMINIUM OXIDE-CONTAINING DISPERSION 有权
    含氧化铝的分散体

    公开(公告)号:US20090111919A1

    公开(公告)日:2009-04-30

    申请号:US12159998

    申请日:2007-01-26

    IPC分类号: C08K5/5317

    摘要: Dispersion containing aluminium oxide and water, wherein the aluminium oxide is present in the form of aggregated primary particles with a BET surface area of 20 to 200 m2/g and has a mean, volume-based aggregate diameter in the dispersion of less than 100 nm, is modified with organophosphonic acids and/or salts thereof, wherein the surface is completely or partially modified, the organophosphonic acids bear at least one amino and/or hydroxy group and is present in a content of 20 to 70 wt. %, based on the total quantity of the dispersion. Preparation containing this dispersion and a melamine resin. Cured product obtainable from the preparation. Use of the dispersion, of the preparation or of the cured product for the preparation of laminates.

    摘要翻译: 含有氧化铝和水的分散体,其中氧化铝以BET表面积为20〜200m 2 / g的聚集一次粒子的形式存在,并且在分散体中具有小于100nm的平均体积基聚集体直径 被有机膦酸和/或其盐改性,其中表面是完全或部分改性的,有机膦酸具有至少一个氨基和/或羟基,并以20至70重量%的含量存在。 %,基于分散体的总量。 包含该分散体和三聚氰胺树脂的制备。 固化产品可从制备中获得。 使用分散体,制剂或固化产品来制备层压材料。