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    Titanium dioxide coated with silicon dioxide
    1.
    发明申请
    Titanium dioxide coated with silicon dioxide 有权
    二氧化钛涂覆二氧化硅

    公开(公告)号：US20060057385A1

    公开(公告)日：2006-03-16

    申请号：US10539061

    申请日：2003-12-02

    申请人： Kai Schumacher ,  Christoph Batz-Sohn ,  Steffen Hasenzahl

    发明人： Kai Schumacher ,  Christoph Batz-Sohn ,  Steffen Hasenzahl

    IPC分类号： C09C1/36 ,  B32B5/16

    CPC分类号： C09C1/3661 ,  C01G23/07 ,  C01P2004/03 ,  C01P2004/84 ,  C01P2006/12 ,  C01P2006/90 ,  Y10T428/2993

    摘要： Powder consisting of particles with a core of titanium dioxide and a coating of silicon dioxide, which powder has a content of silicon dioxide of between 0.5 and 40 wt. %, a BET surface of between 5 and 300 m2/g, and which consists of primary particles that have a coating of silicon dioxide and a core of titanium dioxide. The powder is produced according to a process in which a vaporisable silicon compound and a vaporisable titanium compound are mixed corresponding to the subsequently desired ratio of SiO2 and TiO2 in the product, are vaporised at temperatures of 200° C. or less, and conveyed by means of an inert gas stream together with hydrogen and air or with oxygen-enriched air to the central pipe (core) of a known burner, the reaction mixture is ignited at the mouth of the burner and introduced together with secondary air, is combusted in a cooled flame pipe, following which the titanium dioxide powder coated with silicon dioxide is separated from the gaseous reaction products and if necessary is freed in moist air from adhering hydrogen chloride, the ratio of primary air to secondary air being greater than 0.3, the ratio of core hydrogen to secondary air being greater than 1, and the ratio of titanium dioxide precursor to secondary air being greater than 0.5. Sunscreen agent containing the powder in an amount of between 0.01 and 25 wt. %.

    摘要翻译： 由具有二氧化钛核心和二氧化硅涂层的颗粒组成的粉末，该粉末的二氧化硅含量为0.5〜40重量％。 ％，BET表面积在5和300m 2 / g之间，并且其由具有二氧化硅涂层和二氧化钛核心的一次粒子组成。 该粉末根据其中可蒸发的硅化合物和可蒸发的钛化合物混合的方法制备，相应产物中随后所需的SiO 2和TiO 2的比例 ，在200℃或更低的温度下蒸发，并通过惰性气体流与氢气和空气或富氧空气一起输送到已知燃烧器的中心管（核心）上，将反应混合物点燃 在燃烧器的口处并与二次空气一起引入，在冷却的火焰管中燃烧，随后将二氧化硅涂覆的二氧化钛粉末与气态反应产物分离，如果需要，在潮湿的空气中从附着的氯化氢 ，一次空气与二次空气的比例大于0.3，核心氢气与二次空气的比例大于1，二氧化钛前体与二次空气的比例大于0.5。 含有粉末的防晒剂的量为0.01至25wt。 ％。

    Aluminium oxide powder produced by flame hydrolysis and having a large surface area
    10.
    发明申请
    Aluminium oxide powder produced by flame hydrolysis and having a large surface area 失效
    通过火焰水解产生的具有大的表面积的氧化铝粉末

    公开(公告)号：US20070111880A1

    公开(公告)日：2007-05-17

    申请号：US10583723

    申请日：2004-11-30

    申请人： Kai Schumacher ,  Rainer Golchert ,  Roland Schilling ,  Christoph Batz-Sohn ,  Martin Morters

    发明人： Kai Schumacher ,  Rainer Golchert ,  Roland Schilling ,  Christoph Batz-Sohn ,  Martin Morters

    IPC分类号： C04B35/10 ,  C04B24/00

    CPC分类号： C01F7/302 ,  C01P2002/01 ,  C01P2002/02 ,  C01P2002/72 ,  C01P2004/50 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/19

    摘要： Aluminium oxide powder produced by flame hydrolysis and consisting of aggregates of primary particles, having a BET surface area of from 100 to 250 m2/g, a dibutyl phthalate absorption of from 50 to 450 g/100 g of aluminium oxide powder, which powder shows only crystalline primary particles in high-resolution TEM pictures. It is prepared by vaporising aluminium chloride, transferring the vapour by means of a carrier gas to a mixing chamber and, separately therefrom, supplying hydrogen, air (primary air), which may optionally be enriched with oxygen and/or may optionally be pre-heated, to the mixing chamber, then igniting the mixture of aluminium chloride vapour, hydrogen, air in a burner and burning the flame into a reaction chamber that is separated from the surrounding air, subsequently separating the solid material from the gaseous substances and then treating the solid material with steam and optionally with air, the discharge rate of the reaction mixture from the mixing chamber into the reaction chamber being at least 10 m/s, and the lambda value being from 1 to 10 and the gamma value being from 1 to 15. It can be used as an ink-absorbing substance in ink-jet media.

    摘要翻译： 由火焰水解产生的氧化铝粉末，其由BET表面积为100〜250m 2 / g的一次粒子的聚集体组成，邻苯二甲酸二丁酯的吸收为50〜450g / 100g 的氧化铝粉末，该粉末仅在高分辨率TEM图像中仅显示结晶一级颗粒。 它是通过汽化氯化铝，通过载气将蒸气转移到混合室中制备的，并且与其分开供应氢气，空气（一次空气），其可以任选地富含氧气和/ 加热到混合室，然后点燃燃烧器中的氯化铝蒸气，氢气，空气的混合物，并将火焰燃烧成与周围空气分离的反应室，随后将固体材料与气态物质分离，然后处理 具有蒸汽和任选地具有空气的固体材料，反应混合物从混合室进入反应室的排出速率为至少10m / s，λ值为1至10，γ值为1至 它可以用作喷墨介质中的吸墨物质。