Process for the production of metal oxide and metalloid oxide dispersions
    31.
    发明授权
    Process for the production of metal oxide and metalloid oxide dispersions 有权
    用于生产金属氧化物和类金属氧化物分散体的方法

    公开(公告)号:US08529651B2

    公开(公告)日:2013-09-10

    申请号:US12894539

    申请日:2010-09-30

    摘要: Process for the production of an aqueous dispersion of pyrogenically produced metal oxide and metalloid oxide powders with a BET surface area of between 5 and 600 m2/g, with a metal oxide or metalloid oxide content in the dispersion of between 5 and 25 wt. %, comprising the following steps: water, which is optionally adjusted to pH values of between 2 and 4 by adding acids, is circulated from a receiving vessel via a rotor/stator machine, and metal oxide or metalloid oxide powder is introduced, using a feed device, into the shear zone between the slots in the rotor teeth and the stator slots, continuously or discontinuously and with the rotor/stator machine running, in a quantity such that a predispersion with a solids content of between 20 and 40 wt. % results, and, after all the metal oxide powder or metalloid oxide powder has been added, the feed device closes and shearing continues in such a way that the shear rate is in the range of between 10000 and 40000 s−1, and then, by dilution, the predispersion is adjusted to the desired solids content of the dispersion while maintaining the dispersing conditions.

    摘要翻译: 制备热解法生产的金属氧化物和类金属氧化物粉末的水性分散体的方法,其BET表面积为5至600m 2 / g,分散体中的金属氧化物或准金属氧化物含量为5至25重量%。 %,包括以下步骤:通过添加酸任选地将pH调节至2至4的水通过转子/定子机从接收容器循环,并引入金属氧化物或准金属氧化物粉末,使用 进料装置连续或不连续地进入转子齿中的狭槽和定子槽之间的剪切区域中,并且转子/定子机器运行,其量使得固体含量为20至40重量%的预分散体。 %的结果,并且在添加了所有的金属氧化物粉末或准金属氧化物粉末之后,进料装置关闭并且剪切继续进行,使得剪切速率在10000和40000s -1之间,然后, 通过稀释,将预分散体调节至分散体的所需固体含量,同时保持分散条件。

    PROCESS FOR PRODUCING ULTRAFINE POWDERS BASED ON POLYAMIDES, ULTRAFINE POLYAMIDE POWDERS AND THEIR USE
    33.
    发明申请
    PROCESS FOR PRODUCING ULTRAFINE POWDERS BASED ON POLYAMIDES, ULTRAFINE POLYAMIDE POWDERS AND THEIR USE 审中-公开
    基于聚氨酯,超级聚酰胺粉及其使用生产超细粉的方法

    公开(公告)号:US20120264877A1

    公开(公告)日:2012-10-18

    申请号:US13494082

    申请日:2012-06-12

    摘要: Process for preparing ultrafine powders based on polyamides by contacting polyamides having a relative solution viscosity ηrel in the range from 1.5 to 2.0, measured in 0.5% m-cresol solution at 25° C., with an alcoholic medium in the presence of inorganic particles suspended therein under the action of pressure and/or temperature to generate an at least partial solution, and then precipitating the polyamide from the at least partial solution; the resulting ultrafine polyamide powders have a specific BET surface area of 5-100 m2/g; a fineness d50 of less than 70 μm; an apparent density AD from 250 to 1000 g/l; and a particle content of 0.1 to 80% by weight of inorganic particles based on the total weight of the polyamide powder; which powders are equally suitable for coatings and for mouldings and components with improved mechanical properties.

    摘要翻译: 通过使具有相对溶液粘度和相对浓度的相对比例在1.5至2.0的范围内的聚酰胺制备基于聚酰胺制备的超细粉末的方法,其在25℃的0.5%间甲酚溶液中,在无机物存在下用醇介质 在压力和/或温度的作用下悬浮在其中的颗粒以产生至少部分溶液,然后从所述至少部分溶液中沉淀聚酰胺; 所得超细聚酰胺粉末的BET比表面积为5-100m 2 / g; 细度d50小于70μm; 表观密度AD为250〜1000g / l; 和基于聚酰胺粉末的总重量的无机颗粒的0.1〜80重量%的颗粒含量; 这些粉末同样适用于涂料和具有改进的机械性能的模制品和组分。

    SILICA DISPERSION
    35.
    发明申请
    SILICA DISPERSION 审中-公开
    二氧化硅分散剂

    公开(公告)号:US20100203173A1

    公开(公告)日:2010-08-12

    申请号:US12676373

    申请日:2008-08-14

    IPC分类号: A01N59/00 A01P7/04

    摘要: Dispersion containing, in addition to water, 0.5 to 20% by weight of hydrophobic silica, 0.01 to 10% by weight of a gelling additive, or viscosity-increasing additive which, as further components, contains at least one phenol or at least one phenol derivative and/or at least one aldehyde. It is prepared by dispersing the individual components successively or together in water, in which case the individual components are deaerated before and/or during the addition or the dispersion is deaerated during the individual dispersion steps and thereafter the residual air present in the dispersion is removed by application of vacuum. The dispersion can be used as insecticide and for controlling pathogenic agents.

    摘要翻译: 除了水之外还含有0.5-20重量%的疏水性二氧化硅,0.01至10重量%的胶凝添加剂或粘度增加添加剂的分散体,其作为其它组分含有至少一种苯酚或至少一种苯酚 衍生物和/或至少一种醛。 通过将各个成分相继或一起分散在水中制备,在这种情况下,在各个分散步骤之前和/或加入期间和/或加入期间,或者分散体脱气之前各个组分脱气,然后除去分散体中存在的残余空气 通过应用真空。 该分散体可用作杀虫剂并用于控制病原体。

    SILICON-TITANIUM MIXED OXIDE-CONTAINING DISPERSION FOR THE PRODUCTION OF TITANIUM-CONTAINING ZEOLITES
    38.
    发明申请
    SILICON-TITANIUM MIXED OXIDE-CONTAINING DISPERSION FOR THE PRODUCTION OF TITANIUM-CONTAINING ZEOLITES 审中-公开
    用于生产含钛的矾土的含硅 - 氧化钛混合氧化物分散体

    公开(公告)号:US20090137827A1

    公开(公告)日:2009-05-28

    申请号:US12294371

    申请日:2007-03-12

    摘要: Dispersion containing pyrogenic silicon-titanium mixed oxide powders with a silicon dioxide content of 75 to 99.99 wt.-% and a titanium dioxide content of 0.01 to 25 wt. %, water and a basic, quaternary ammonium compound, wherein the mean aggregate diameter of the particles of the silicon-titanium mixed oxide powder in the dispersion is 200 nm at most. Process for the production of a titanium-containing zeolite with the use of the dispersion.

    摘要翻译: 含有二氧化硅含量为75〜99.99重量%,二氧化钛含量为0.01〜25重量%的热解硅 - 钛混合氧化物粉末的分散体。 %,水和碱性季铵化合物,其中分散体中硅 - 钛混合氧化物粉末的颗粒的平均聚集体直径最大为200nm。 使用分散体生产含钛沸石的方法。

    Aluminium Oxide Dispersion
    39.
    发明申请
    Aluminium Oxide Dispersion 有权
    氧化铝分散体

    公开(公告)号:US20080264299A1

    公开(公告)日:2008-10-30

    申请号:US11994416

    申请日:2006-06-09

    IPC分类号: C09D1/00

    摘要: Aluminium oxide dispersion, which is stable in a pH range 5 from 5 to 9 and has an aluminium oxide content of at least 40 wt. %, obtainable by dispersing pyrogenically produced aluminium oxide particles in an aqueous phase, wherein one or several at least dibasic hydroxycarboxylic acids present dissolved in the dispersion and at least one salt of a 10 dialkali metal hydrogen phosphate and/or alkali metal dihydrogen phosphate are added to the aqueous phase each mutually independently in a quantity of 0.3−3×10−6 mol/m2 of aluminium oxide specific surface area.

    摘要翻译: 氧化铝分散体,其在5至9的pH范围内稳定,并且具有至少40重量%的氧化铝含量。 通过将热解产生的氧化铝颗粒分散在水相中可获得的,其中加入溶解在分散体中的一种或几种至少二元羟基羧酸和至少一种10碱式金属磷酸氢盐和/或碱金属磷酸二氢盐的盐 每个相互独立地以0.3-3×10 -6摩尔/平方米的氧化铝比表面积的量加到水相中。

    DISPERSION CONTAINING TITANIUM DIOXIDE
    40.
    发明申请
    DISPERSION CONTAINING TITANIUM DIOXIDE 有权
    含二氧化钛的分散体

    公开(公告)号:US20080098932A1

    公开(公告)日:2008-05-01

    申请号:US11572018

    申请日:2005-07-05

    IPC分类号: B05D1/00

    摘要: Aqueous dispersion obtainable by placing in water an aggregated titanium dioxide powder having a specific surface area of from 20 to 150 m2/g in such an amount that the desired dispersion comprises at least 20 wt. % titanium dioxide, and at least onc amino alcohol having from 1 to 6 carbon atoms, and at least one carboxylic acid from the group comprising dibasic carboxylic acids and/or hydroxycarboxylic acids having from 2 to 6 carbon atoms,—the amino alcohol being present in the dispersion in an amount of from 2.5 to 7.0 μmol./m2 specific surface area TiO2 and the carboxylic acid being present in an amount of from 1.0 to 3.5 μmol./m specific surface area TiO2,—producing a pre-dispersion by introducing energy in an amount of less than 200 kJ/m3 and then producing a dispersion in which the aggregated titanium dioxide powder has a mean, volume-related aggregate diameter of less than 150 nm by grinding the pre-dispersion by means of a high-energy mill at a pressure of at least 500 bar. The dispersion can be used in the coating of glass, ceramics and metal surfaces.

    摘要翻译: 通过将具有20至150m 2 / g比表面积的聚集二氧化钛粉末放入水中而得到的水分散体,其量使得所需分散体包含至少20wt。 %二氧化钛和至少具有1至6个碳原子的氨基醇,以及至少一种含有2至6个碳原子的二元羧酸和/或羟基羧酸的羧酸, - 存在的氨基醇 在分散体中的量为2.5-7.0μmol/ m 2 SO 3比表面积TiO 2和羧酸的存在量为1.0-3.5μmolol ./m比表面积TiO 2, - 通过引入少于200kJ / m 3的量的能量产生预分散,然后产生分散体,其中 通过在至少500巴的压力下通过高能研磨机研磨预分散体,聚集的二氧化钛粉末具有小于150nm的平均体积相关聚集体直径。 分散体可用于玻璃,陶瓷和金属表面的涂层。