Method of purifying alkoxysilanes
    1.
    发明授权
    Method of purifying alkoxysilanes 失效
    烷氧基硅烷的纯化方法

    公开(公告)号:US5260470A

    公开(公告)日:1993-11-09

    申请号:US939470

    申请日:1992-09-02

    IPC分类号: C07F7/18 C07F7/20 C07F7/08

    CPC分类号: C07F7/20

    摘要: A method of purifying alkoxysilanes contaminated by organosilicon compounds with hydrolyzable chlorine atoms is disclosed wherein the alkoxysilanes are reacted in a pressure reactor with an alcohol, preferably in the presence of an HCl acceptor, at a temperature of 5.degree. C. to 160.degree. C. above the boiling point of the alcohol used and at the pressure which develops in the reactor.

    摘要翻译: 公开了一种纯化有机硅化合物被可水解氯原子污染的烷氧基硅烷的方法,其中烷氧基硅烷在压力反应器中与醇反应,优选在HCl受体存在下,在5℃至160℃的温度下反应。 高于所用醇的沸点和反应器中产生的压力。

    APPARATUS AND METHOD FOR CARRYING OUT CHEMICAL AND PHYSICAL MATERIALS TRANSFORMATIONS
    2.
    发明申请
    APPARATUS AND METHOD FOR CARRYING OUT CHEMICAL AND PHYSICAL MATERIALS TRANSFORMATIONS 有权
    用于进行化学和物理材料转换的装置和方法

    公开(公告)号:US20110015281A1

    公开(公告)日:2011-01-20

    申请号:US12920498

    申请日:2009-03-05

    摘要: Reactor for carrying out chemical and physical materials transformations, which comprises a reaction space enclosed by a reactor housing, where the reactor housing has at least two lateral fluid inlets having adjustably mounted nozzles which include an angle of about 20-160 degrees and through which fluid jets which impinge on one another at a common collision point within the reaction space are passed and the reactor has a fluid outlet at the bottom of the reaction space, which is characterized in that—an exchangeable bottom plate•which has a hole as fluid outlet and•on which moveably supported spheres are located so as to block the original path of the individual fluid jets in the unaligned state rests on the bottom of the reaction space and—a half shell standing upright on the bottom of the reaction space is located between each moveably supported sphere and the wall of the reactor space and—bottom plate, half shell and moveably supported spheres comprise one or more hard materials.

    摘要翻译: 用于进行化学和物理材料转化的反应器,其包括由反应器壳体包围的反应空间,其中反应器壳体具有至少两个侧向流体入口,其具有可调节地安装的喷嘴,其包括约20-160度的角度,并且流体 通过在反应空间内的共同碰撞点处彼此撞击的喷嘴,并且反应器在反应空间的底部具有流体出口,其特征在于 - 具有作为流体出口的孔的可更换的底板 和在其上可移动地支撑的球体被定位成阻挡在未对准状态下的各个流体射流的原始路径位于反应空间的底部,并且直立在反应空间底部的半壳体位于 每个可移动地支撑的球体和反应器空间和底板的壁,半壳体和可移动支撑的球体包括一个或多个硬质 材料

    Stabilized, aqueous silicon dioxide dispersion
    4.
    发明授权
    Stabilized, aqueous silicon dioxide dispersion 有权
    稳定的二氧化硅水分散体

    公开(公告)号:US07374787B2

    公开(公告)日:2008-05-20

    申请号:US10644755

    申请日:2003-08-21

    IPC分类号: A23L2/70 C12H1/00

    摘要: An aqueous dispersion, having a silicon dioxide powder having a silicon dioxide content of 10 to 60 wt.%, wherein the aqueous dispersion is stable in the pH range of 2 to 6, the aqueous dispersion additionally contains at least one compound, which is at least partially soluble in aqueous solution in the pH range 2 to 6 in the form of polyvalent cations, these being stable in a silicate-like environment as an anionic component of the particle surface of the silicon dioxide powder, the quantity of cation-providing compound in relation to the surface of the silicon dioxide is 0.001 to 0.1 mg cation-providing compound/m2 silicon dioxide surface, the cation-providing compound being calculated as the oxide, and the zeta potential of the aqueous dispersion has values of less than or equal to zero.

    摘要翻译: 一种水分散体,其二氧化硅粉末的二氧化硅含量为10至60重量%,其中水分散体在pH范围为2至6时是稳定的,水分散体还含有至少一种化合物,其在 在多价阳离子形式的pH范围2〜6的水溶液中最少部分溶解,这些在作为二氧化硅粉末的粒子表面的阴离子成分的硅酸盐样环境中稳定,提供阳离子的化合物的量 相对于二氧化硅的表面为0.001〜0.1mg的提供阳离子的化合物/ m 2二氧化硅表面,阳离子提供化合物以氧化物计算,并且水溶液的ζ电位 色散的值小于或等于零。

    Process for the production of metal oxide and metalloid oxide dispersions
    5.
    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 THE PRODUCTION OF METAL OXIDE AND METALLOID OXIDE DISPERSIONS
    7.
    发明申请
    PROCESS FOR THE PRODUCTION OF METAL OXIDE AND METALLOID OXIDE DISPERSIONS 有权
    生产金属氧化物和金属氧化物分散体的方法

    公开(公告)号:US20110155951A1

    公开(公告)日:2011-06-30

    申请号:US12894539

    申请日:2010-09-30

    IPC分类号: C09K3/00

    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, andmetal 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, andthen, 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。

    Aluminium Oxide Dispersion
    8.
    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
    9.
    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。

    Process for the produciton of metal oxide and metalloid oxide dispersions
    10.
    发明申请
    Process for the produciton of metal oxide and metalloid oxide dispersions 审中-公开
    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:US20060104881A1

    公开(公告)日:2006-05-18

    申请号:US10546893

    申请日:2004-04-01

    IPC分类号: C01B33/12

    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: 用于生产热解法制备的金属氧化物和类金属氧化物粉末的水分散体的方法,其BET表面积为5至600m 2 / g,分散体中具有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: - 通过加入酸任选地将pH调节至2至4的水通过转子/定子机从接收容器循环,引入金属氧化物或准金属氧化物粉末, 使用进给装置连续地或不连续地并且与转子/定子机器运行在转子齿和定子槽中的槽之间的剪切区域中,其量使得固体含量在20和40重量%之间的预分散体 。 %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之间的范围内 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。