Aluminium oxide powder produced by flame hydrolysis and having a large surface area
    1.
    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

    IPC分类号: C04B35/10 C04B24/00

    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。

    Aluminium oxide powder produced by flame hydrolysis and having a large surface area
    2.
    发明授权
    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:US07749322B2

    公开(公告)日:2010-07-06

    申请号:US10583723

    申请日:2004-11-30

    IPC分类号: C04B14/04 B24D3/02 C01F1/00

    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 vaporizing 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: 由火焰水解生成的氧化铝粉末,其由BET表面积为100〜250m 2 / g的一次粒子的聚集体,邻苯二甲酸二丁酯的吸收为50〜450g / 100g的氧化铝粉末,该粉末显示 只有晶体初级粒子在高分辨率TEM图片中。 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。

    Titanium dioxide coated with silicon dioxide
    3.
    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

    IPC分类号: C09C1/36 B32B5/16

    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。 %。

    Mixed oxide powder comprising alkali metal oxide, and silicone rubber comprising this powder
    6.
    发明授权
    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:US07862797B2

    公开(公告)日:2011-01-04

    申请号:US11917199

    申请日:2006-05-23

    IPC分类号: C01C1/00

    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 m2/g, has a specific DBP number, expressed as DBP number per square meter 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100-350m2 / 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。

    TITANIUM DIOXIDE HAVING A VARIABLE SINTERING STABILITY
    7.
    发明申请
    TITANIUM DIOXIDE HAVING A VARIABLE SINTERING STABILITY 审中-公开
    具有可变烧结稳定性的二氧化钛

    公开(公告)号:US20080318046A1

    公开(公告)日:2008-12-25

    申请号:US12125531

    申请日:2008-05-22

    IPC分类号: B32B5/16 C01G23/047 C01G23/07

    摘要: Provided is a crystalline TiO2 powder in the form of aggregated primary particles having a variable sintering stability at a BET surface area of 70-100 m2/g and a rutile content of greater than 10% but less than or equal to 40%, and a process for preparing the crystalline TiO2 powder, which involves: introducing a TiCl4 vapor and, separately therefrom, H2 and a primary air into a mixing chamber to produce a gaseous mixture; igniting the gaseous mixture in a burner to produce a flame, which is burned into a reaction chamber to produce the crystalline TiO2 powder and gaseous substances; and separating the crystalline TiO2 powder from the gaseous substances, wherein the relative amounts of TiCl4 vapor, H2 and primary air are selected to provide crystalline TiO2 powder having the aforementioned BET surface area and rutile content, with the proviso that factor A has a value of 0.1-0.4·105 g/m2 in accordance within the following formula: factor A=105{[(TiCl4 vapor×H2)/(primary air×gaseous mixture)]/BET]}.

    摘要翻译: 提供了在BET表面积为70-100m 2 / g,金红石含量大于10%但小于或等于40%时具有可变烧结稳定性的聚集一次颗粒形式的结晶TiO 2粉末,以及 制备结晶TiO 2粉末的方法,其包括:将TiCl 4蒸气和与其分开的H 2和一次空气引入混合室以产生气态混合物; 点燃燃烧器中的气体混合物以产生火焰,其被燃烧到反应室中以产生结晶TiO 2粉末和气态物质; 并且从气态物质中分离出结晶TiO 2粉末,其中选择TiCl 4蒸汽,H 2和一次空气的相对量以提供具有上述BET表面积和金红石含量的结晶TiO 2粉末,条件是因子A的值为 0.1-0.4.105g / m 2,按照下列公式:因子A = 105 {[(TiCl 4·蒸气×H 2)/(初级气体混合气体)] / BET]}。

    Process for the Production of Doped Metal Oxide Particles
    9.
    发明申请
    Process for the Production of Doped Metal Oxide Particles 失效
    掺杂金属氧化物颗粒生产工艺

    公开(公告)号:US20080311291A1

    公开(公告)日:2008-12-18

    申请号:US12091767

    申请日:2006-10-10

    摘要: Process for the production of doped metal oxide particles, wherein the doping component is present on the surface in the form of domains, wherein in a first reaction zone, an oxidizable and/or - hydrolysable metal compound as dopant together with an atomization gas is atomised into a flow of metal oxide particles in a carrier gas, wherein the mass flow of the metal oxide particles und - the mass flow of the dopant are selected such that the doped metal oxide particles contain 10 ppm to 10 wt. % of the doping component, where the quantity of dopant to be introduced is calculated as the corresponding oxide, and wherein the temperature in the first reaction zone is - selected such that it is below the boiling temperature of the dopant under the prevailing reaction conditions, and then, in a second reaction zone, the flow from the first - reaction zone and optionally at least as much oxygen and/or steam are - introduced that the quantity of oxygen and/or steam at least suffices completely to convert the dopant, wherein the temperature is from 300 to 2000° C., - preferably 500 to 1000° C., and the reaction mixture is then cooled or allowed to cool and the doped metal oxide particles are separated from the gaseous substances.

    摘要翻译: 用于生产掺杂金属氧化物颗粒的方法,其中所述掺杂组分以畴形式存在于所述表面上,其中在第一反应区中,作为掺杂剂的可氧化和/或可水解的金属化合物与雾化气体一起雾化 进入载气中的金属氧化物颗粒的流动,其中选择金属氧化物颗粒的质量流量和掺杂剂的质量流量,使得掺杂的金属氧化物颗粒含有10ppm至10wt。 掺杂成分的%,其中待引入的掺杂剂的量被计算为相应的氧化物,并且其中第一反应区中的温度被选择为使得其在主要反应条件下低于掺杂剂的沸点温度, 然后在第二反应区中引入来自第一反应区和任选地至少相同的氧和/或蒸汽的流量,使得氧和/或蒸汽的量至少足以完全转化掺杂剂,其中 温度为300至2000℃,优选为500至1000℃,然后将反应混合物冷却或冷却,并将掺杂的金属氧化物颗粒与气态物质分离。

    Ternary Metal Mixed Oxide Powder
    10.
    发明申请
    Ternary Metal Mixed Oxide Powder 审中-公开
    三元金属混合氧化物粉末

    公开(公告)号:US20070231280A1

    公开(公告)日:2007-10-04

    申请号:US11569415

    申请日:2005-04-19

    摘要: Ternary, pyrogenically prepared, crystalline metal mixed oxide powder having the components titanium and silicon and a third component chosen from the group comprising aluminium, zirconium, zinc, tin, magnesium, yttrium, vanadium, tungsten, tantalum, cerium or boron. It is prepared by a procedure in which a vaporizable or atomizable silicon and titanium compound and a vaporizable or atomizable compound of a third mixed oxide component are mixed with hydrogen and primary air and the gas mixture is burned into a reaction chamber, and the powder formed is separated off from the gaseous reaction products. It can be employed in sunscreen formulations.

    摘要翻译: 三元,热解法制备的具有钛和硅组分的结晶金属混合氧化物粉末和选自铝,锆,锌,锡,镁,钇,钒,钨,钽,铈或硼的第三组分。 通过将可蒸发或可雾化的硅和钛化合物和可蒸发或可雾化的第三混合氧化物组分的化合物与氢气和一次空气混合并将气体混合物燃烧到反应室中的方法制备,并形成粉末 与气态反应产物分离。 它可用于防晒配方。