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    Pyrogenic silicon dioxide and a dispersion thereof
    4.
    发明授权
    Pyrogenic silicon dioxide and a dispersion thereof 有权
    热解二氧化硅及其分散体

    公开(公告)号：US07722849B2

    公开(公告)日：2010-05-25

    申请号：US10530491

    申请日：2003-12-16

    申请人： Martin Moerters ,  Helmut Mangold ,  Monika Oswald ,  Kai Schumacher ,  Heinz Lach ,  Gerrit Schneider

    发明人： Martin Moerters ,  Helmut Mangold ,  Monika Oswald ,  Kai Schumacher ,  Heinz Lach ,  Gerrit Schneider

    IPC分类号： C01B33/12 ,  C01B33/14 ,  C01B33/141 ,  C01B33/142 ,  C01B33/143 ,  C01B33/18 ,  C01B33/187

    CPC分类号： C03C3/04 ,  B82Y30/00 ,  C01B33/1417 ,  C01B33/1485 ,  C01B33/183 ,  C01P2004/50 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/22

    摘要： Pyrogenic silicon dioxide powder with a BET surface area of 30 to 90 m2/g, a DBP index of 80 or less, a mean aggregate area of less than 25000 nm2 and a mean aggregate circumference of less than 1000 nm, wherein at least 70% of the aggregates have a circumference of less than 1300 nm. It is prepared by mixing at least one silicon compound in vapor form, a free-oxygen-containing gas and a combustible gas in a burner of known construction, igniting this gas mixture at the mouth of the burner and burning it in the flame tube of the burner, separating the solid obtained from the gas mixture and optionally purifying, wherein the oxygen content of the free-oxygen-containing gas is adjusted so that the lambda value is greater than or equal to 1, the gamma value is between 1.2 and 1.8, the throughput is between 0.1 and 0.3 kg SiO2/m3 of core gas mixture and the mean normalized rate of flow of gas in the flame tube at the level of the mouth of the burner is at least 5 m/s. The powder can be used as a filler. A dispersion containing the powder according to the invention. The powder can be used as a filler in rubber, silicone rubber and plastics. The dispersion can be used to prepare glass items.

    摘要翻译： 热解二氧化硅粉末，其BET表面积为30〜90m2 / g，DBP指数为80以下，平均聚集面积小于25000nm 2，平均聚集体周长小于1000nm，其中，至少70％ 的聚集体具有小于1300nm的圆周。 通过在已知结构的燃烧器中混合至少一种蒸汽形式的硅化合物，含游离氧的气体和可燃气体来制备，在燃烧器的口部点燃该气体混合物并将其燃烧在燃烧器的火焰管中 燃烧器，分离从气体混合物获得的固体并任选地进行纯化，其中调节含游离氧气体的氧含量使λ值大于或等于1，γ值在1.2和1.8之间 ，核心气体混合物的通量在0.1至0.3kg SiO 2 / m 3之间，并且在燃烧器口处的火焰管中气体的平均归一化流速至少为5m / s。 粉末可用作填料。 含有本发明粉末的分散体。 该粉末可用作橡胶，硅橡胶和塑料中的填料。 分散体可用于制备玻璃制品。

    Mixed Oxide Powder Comprising Alkali Metal Oxide, and Silicone Rubber Comprising This Powder
    7.
    发明申请
    Mixed Oxide Powder Comprising Alkali Metal Oxide, and Silicone Rubber Comprising This Powder 有权
    包含碱金属氧化物的混合氧化物粉末和包含该粉末的硅橡胶

    公开(公告)号：US20080199392A1

    公开(公告)日：2008-08-21

    申请号：US11917199

    申请日：2006-05-23

    申请人： Kai Schumacher ,  Helmut Roth ,  Rainer Golchert ,  Helmut Mangold ,  Mario Scholz

    发明人： Kai Schumacher ,  Helmut Roth ,  Rainer Golchert ,  Helmut Mangold ,  Mario Scholz

    IPC分类号： C01B13/14

    CPC分类号： B01J19/26 ,  C01B13/24 ,  C01B33/184 ,  C01P2002/54 ,  C01P2004/50 ,  C01P2006/12 ,  C01P2006/19

    摘要： Alkali metal oxide-metal oxide mixed oxide powder in the form of aggregates of pore-free primary particles, comprising from 0.005 to 5% by weight of at least one alkali metal oxide, which has a BET surface area of from 100 to 350 m/g, has a specific DBP number, expressed as DBP number per square metre of specific surface area, greater than or equal to that of a powder which has only the metal oxide component, has the alkali metal oxide distributed in the core and on the surface of the primary particles. Silicone rubber comprising the alkali metal oxide-metal oxide mixed oxide powder.

    摘要翻译： 碱性金属氧化物 - 金属氧化物混合氧化物粉末，其为无孔一次粒子的聚集体形式，包含0.005至5重量％的至少一种碱金属氧化物，BET表面积为100-350m 2 / g具有特定DBP数，表示为每平方米比表面积的DBP数，大于或等于仅具有金属氧化物组分的粉末，具有分布在芯中和表面上的碱金属氧化物 的初级粒子。 含有碱金属氧化物 - 金属氧化物混合氧化物粉末的硅橡胶。