Pyrogenically produced silica
    5.
    发明授权
    Pyrogenically produced silica 有权
    热解产生的二氧化硅

    公开(公告)号:US07541014B2

    公开(公告)日:2009-06-02

    申请号:US10530284

    申请日:2003-12-16

    摘要: Pyrogenically produced silica powder with a BET surface of 30 to 90 m2/g, a dibutyl phthalate number of at least 80 and a tamped density of no more than 110 g/l. It is produced in that at least one vaporous silicon compound, a gas containing free oxygen and a combustible gas are mixed together in a closed burner and then burnt in a flame in the flame tube of the burner, the solid obtained is separated from the gas mixture and optionally purified, wherein the oxygen content of the gas containing free oxygen is adjusted such that the lambda value is greater than or equal to 1, and the gamma value is between 1.2 and 1.8. It can be used in toner applications.

    摘要翻译: 热塑性二氧化硅粉末,BET表面积为30〜90m2 / g,邻苯二甲酸二丁酯值至少为80,捣实密度不超过11​​0g / l。 制造方法是将至少一种气相硅化合物,含有游离氧气和可燃气体的气体在封闭的燃烧器中混合在一起,然后在燃烧器的火焰管中的火焰中燃烧,所得的固体与气体分离 混合物和任选地纯化,其中调节含游离氧的气体的氧含量使得λ值大于或等于1,并且γ值在1.2和1.8之间。 它可用于调色剂应用。

    Pyrogenically produced silica
    6.
    发明申请
    Pyrogenically produced silica 有权
    热解产生的二氧化硅

    公开(公告)号:US20060093543A1

    公开(公告)日:2006-05-04

    申请号:US10530284

    申请日:2003-12-16

    IPC分类号: C01B33/12

    摘要: Pyrogenically produced silica powder with a BET surface of 30: to 90 m2/g, a dibutyl phthalate number of at least 80 and a tamped density of no more than 110 g/l. It is produced in that at least one vaporous silicon compound, a gas containing free oxygen and a combustible gas are mixed together in a closed burner and then burnt in a flame in the flame tube of the burner, the solid obtained is separated from the gas mixture and optionally purified, wherein the oxygen content of the gas containing free oxygen is adjusted such that die lambda value is greater than or equal to 1, and die gamma value is between 1.2 and 1.8. It can be used in toner applications.

    摘要翻译: 热塑性二氧化硅粉末,其BET表面积为30〜90m 2 / g,邻苯二甲酸二丁酯值至少为80,捣实密度不超过11​​0g / l。 制造方法是将至少一种气相硅化合物,含有游离氧气和可燃气体的气体在封闭的燃烧器中混合在一起,然后在燃烧器的火焰管中的火焰中燃烧,所得的固体与气体分离 混合物和任选地纯化,其中调节含游离氧的气体的氧含量使得管芯λ值大于或等于1,并且管芯γ值在1.2和1.8之间。 它可用于调色剂应用。

    Pyrogenically produced silicon dioxide powder and dispersion thereof
    7.
    发明授权
    Pyrogenically produced silicon dioxide powder and dispersion thereof 有权
    热解产生的二氧化硅粉末及其分散体

    公开(公告)号:US07537833B2

    公开(公告)日:2009-05-26

    申请号:US11055605

    申请日:2005-02-11

    IPC分类号: B32B5/16

    摘要: Pyrogenically produced silicon dioxide powder in the form of aggregates of primary particles having a BET surface area of 90±15 m2/g, wherein the aggregates display an average surface area of 10000 to 20000 nm2, an average equivalent circle diameter (ECD) of 90 to 130 nm and an average circumference of 1000 to 1400 nm.It is produced by a pyrogenic process in which silicon tetrachloride and a second silicon component comprising H3SiCl, H2SiCl2, HSiCl3, CH3SiCl3, (CH3)2SiCl2, (CH3)3SiCl and/or (n-C3H7)SiCl3 are mixed with primary air and a combustion gas and burnt into a reaction chamber, secondary air also being introduced into the reaction chamber, and the feed materials being chosen such that an adiabatic flame temperature of 1810 to 1890° C. is obtained.Dispersion containing the pyrogenically produced silicon dioxide powder.

    摘要翻译: 以BET表面积为90±15m 2 / g的一次粒子聚集体形式的热解法生产的二氧化硅粉末,其中聚集体的平均表面积为10000〜20000nm 2,平均当量圆直径(ECD)为90 至130nm,平均周长为1000〜1400nm。 其通过热解法制备,其中将四氯化硅和包含H3SiCl,H 2 SiCl 2,HSiCl 3,CH 3 SiCl 3,(CH 3)2 SiCl 2,(CH 3)3 SiCl和/或(n-C 3 H 7)SiCl 3的第二硅组分与一次空气和 燃烧气体并燃烧到反应室中,二次空气也被引入反应室,并且进料选择为使得获得1810至1890℃的绝热火焰温度。 含有热解产生的二氧化硅粉末的分散体。