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    Aluminium oxide powder produced by flame hydrolysis and having a large surface area
    43.
    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

    Applicant: Kai Schumacher ,  Rainer Golchert ,  Roland Schilling ,  Christoph Batz-Sohn ,  Martin Moerters

    Inventor： Kai Schumacher ,  Rainer Golchert ,  Roland Schilling ,  Christoph Batz-Sohn ,  Martin Moerters

    IPC: C04B14/04 ,  B24D3/02 ,  C01F1/00

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

    Abstract: 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.

    Abstract translation: 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。

    High temperature SiCN and SiC-type nanostructured ceramic material from block copolymer mesophases
    48.
    发明授权
    High temperature SiCN and SiC-type nanostructured ceramic material from block copolymer mesophases 有权
    来自嵌段共聚物中间相的高温SiCN和SiC型纳米结构陶瓷材料

    公开(公告)号：US07087656B2

    公开(公告)日：2006-08-08

    申请号：US10687917

    申请日：2003-10-20

    Applicant: Carlos Garcia ,  Ulrich Wiesner

    Inventor： Carlos Garcia ,  Ulrich Wiesner

    IPC: C04B38/06

    CPC classification number: C04B35/565 ,  C01B21/0828 ,  C01B32/956 ,  C01P2002/01 ,  C01P2002/72 ,  C01P2002/78 ,  C04B35/584 ,  C04B2235/3856 ,  C04B2235/465 ,  C08F8/42 ,  C08F293/005 ,  C08L53/00 ,  C08L53/005

    Abstract: A block copolymer, preferably a block copolymer such as poly(isoprene-block-ethylene oxide), PI-b-PEO, is used as a structure directing agent for a polymer derived ceramic (PDC) precursor, preferably a silazane, most preferably a silazane commercially known as Ceraset. The PDC precursor is preferably polymerized after mixing with the block copolymer to form a nanostructured composite material. Through further heating steps, the nanostructured composite material can be transformed into a nanostructured non-oxide ceramic material, preferably a high temperature SiCN or SiC material.

    Abstract translation: 嵌段共聚物，优选嵌段共聚物如聚（异戊二烯 - 嵌段 - 环氧乙烷），PI-b-PEO，用作聚合物衍生的陶瓷（PDC）前体，优选硅氮烷的结构导向剂，最优选 商业上称为Ceraset的硅氮烷。 PDC前体优选在与嵌段共聚物混合后聚合以形成纳米结构复合材料。 通过进一步的加热步骤，纳米结构复合材料可以转变成纳米结构非氧化物陶瓷材料，优选高温SiCN或SiC材料。

    Ultrafine Modified Aluminum Hydroxide and Its Preparation
    49.
    发明申请
    Ultrafine Modified Aluminum Hydroxide and Its Preparation 审中-公开
    超细改性氢氧化铝及其制备方法

    公开(公告)号：US20050167641A1

    公开(公告)日：2005-08-04

    申请号：US10707048

    申请日：2003-11-18

    Applicant: Jianfeng Chen ,  Fen Guo ,  Lei Liang ,  Zhigang Shen

    Inventor： Jianfeng Chen ,  Fen Guo ,  Lei Liang ,  Zhigang Shen

    IPC: C01F7/02 ,  C01F7/14 ,  C09K21/02 ,  C09K21/00

    CPC classification number: B82Y30/00 ,  C01F7/02 ,  C01F7/142 ,  C01P2002/01 ,  C01P2002/72 ,  C01P2002/74 ,  C01P2002/82 ,  C01P2002/88 ,  C01P2004/04 ,  C01P2004/61 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/10 ,  C01P2006/11 ,  C01P2006/12 ,  C09K21/02 ,  Y02P20/142

    Abstract: A method of preparing ultrafine modified aluminum hydroxide, having two steps: a carbon component decomposition under ultra gravity conditions in a rotating bed, and a modifying treatment. The carbon component decomposition is carried out in porous packing layer inside of a rotating bed, where the mass transfer for the reaction and micro-mixing process are extremely enhanced. The aluminum hydroxide solution (as a precipitate or a dry powder) obtained is further converted by the subsequent modified treatment process. This method can control the particle size of the modified aluminum hydroxide crystal grains, homogenize its distribution, and shorten the reaction time. Particularly, the modified treatment greatly improves its weight loss temperature and weight loss ratio. The use field of the resulting aluminum hydroxide as a flame retardant and other is expanded. The average size of modified aluminum hydroxide grain obtained is from 50 nm to several micrometers, and can be controlled. Its grain size can be homogeneously distributed and nano-graded. The mechanical properties of polymers containing the ultrafine modified aluminum hydroxide are improved. The process of the present invention can be conveniently used in industries and can improve productivity and the product grade.

    Abstract translation: 一种制备超细改性氢氧化铝的方法，具有两个步骤：在旋转床中超重力条件下的碳成分分解和改性处理。 碳分量分解在旋转床内部的多孔填充层中进行，其中用于反应和微混合过程的质量传递极大地增强。 获得的氢氧化铝溶液（作为沉淀物或干粉）通过后续的改性处理工艺进一步转化。 该方法可以控制改性氢氧化铝晶粒的粒度，使其分布均匀，缩短反应时间。 特别是改性处理大大提高了其体重减轻温度和体重减轻率。 所得到的氢氧化铝用作阻燃剂等的使用领域被扩大。 获得的改性氢氧化铝颗粒的平均尺寸为50nm至几微米，并且可以被控制。 其粒度可以均匀分布和纳米级分。 含有超细改性氢氧化铝的聚合物的机械性能得到改善。 本发明的方法可以方便地用于工业中，并且可以提高生产率和产品等级。

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