SURFACE-MODIFIED ZINC OXIDE-SILICON DIOXIDE CORE-SHELL PARTICLES
    11.
    发明申请
    SURFACE-MODIFIED ZINC OXIDE-SILICON DIOXIDE CORE-SHELL PARTICLES 审中-公开
    表面修饰的氧化锌 - 二氧化硅核心颗粒

    公开(公告)号:US20100040567A1

    公开(公告)日:2010-02-18

    申请号:US12444522

    申请日:2007-08-01

    IPC分类号: A61K8/27 A61K8/02

    摘要: Surface-modified zinc-silicon oxide particles which consist of a core, a first coating layer surrounding the core, and a second coating layer surrounding the first coating layer, where the core is crystalline and consists of aggregated zinc oxide primary particles having a primary particle diameter of from 10 to 75 nm, the first coating layer consists of one or more compounds containing the elements Zn, Si and O, the second coating layer comprises linear and/or branched alkylsilyl groups having 1 to 20 carbon atoms bonded chemically to the first coating layer, which have an average aggregate area of less than 40 000 nm2 and an average aggregate diameter (ECD) of less than 300 nm, a carbon content of from 0.4 to 1.5% by weight and a BET surface area of from 10 to 60 m2/g.

    摘要翻译: 表面改性的氧化锌 - 氧化硅颗粒,其由芯组成,围绕芯的第一涂层和围绕第一涂层的第二涂层,其中芯是结晶的,并且由具有一次颗粒的聚集的氧化锌一次颗粒组成 直径为10至75nm,第一涂层由一种或多种含有元素Zn,Si和O的化合物组成,第二涂层包含具有1至20个碳原子的直链和/或支链烷基甲硅烷基,其化学键合到第一 平均聚集面积小于40000nm 2,平均聚集体直径(ECD)小于300nm,碳含量为0.4〜1.5重量%,BET表面积为10〜60的涂层 m2 / g。

    SURFACE-MODIFIED SUPERPARAMAGNETIC OXIDIC PARTICLES
    15.
    发明申请
    SURFACE-MODIFIED SUPERPARAMAGNETIC OXIDIC PARTICLES 审中-公开
    表面改性超级磁性氧化颗粒

    公开(公告)号:US20110147641A1

    公开(公告)日:2011-06-23

    申请号:US12922808

    申请日:2009-03-30

    IPC分类号: H01F1/00 B05D5/12

    摘要: Surface-modified superparamagnetic oxidic particles, characterized by the following physicochemical characteristics: BET surface area 20 to 75 m2/g; Carbon content 0.5 to 6.0% by weight; Tamped density 150 to 500 g/l; Chlorine content 50 to 1000 ppm; Drying loss 0.1 to 4.0% by weight are prepared by contacting the oxides with the surface modifier either by spraying or vapour deposition and then heat-treating them. The surface-modified oxidic particles can be used as a filler in adhesives. Further fields of application are use for data carriers, as a contrast agent in imaging processes, for biochemical separation and analysis processes, for medical applications, as an abrasive, as a catalyst or as a catalyst support, as a thickener, for thermal insulation, as a dispersing assistant, as a flow assistant and in ferrofluids.

    摘要翻译: 表面改性的超顺磁性氧化物颗粒,其特征在于以下物理化学特性:BET表面积为20〜75m2 / g; 碳含量为0.5〜6.0重量% 捣实密度150〜500g / l; 氯含量50〜1000ppm; 通过喷雾或气相沉积使氧化物与表面改性剂接触,然后对其进行热处理,制备0.1至4.0重量%的干燥失重。 表面改性的氧化物颗粒可用作粘合剂中的填料。 其它应用领域可用于数据载体,成像过程中的造影剂,生物化学分离和分析过程,医疗应用,研磨剂,催化剂或作为增稠剂的催化剂载体,用于保温, 作为分散助手,作为流动助手和铁磁流体。

    Zinc oxide powder aggregates present in circular, ellipsoidal, linear and branched form
    19.
    发明授权
    Zinc oxide powder aggregates present in circular, ellipsoidal, linear and branched form 有权
    呈圆形,椭圆形,线形和分枝状的氧化锌粉末聚集体

    公开(公告)号:US07371337B2

    公开(公告)日:2008-05-13

    申请号:US10572936

    申请日:2004-09-02

    IPC分类号: H01B1/00 H01B1/12 C01G9/02

    摘要: Pyrogenically prepared zinc oxide powder having a BET surface area of from 10 to 200 m2/g, which is in the form of aggregates, the aggregates being composed of particles having different morphologies, and 0-10% of the aggregates being in a circular form, 30-50% being in an ellipsoidal form, 30-50% being in a linear form and 20-30% being in a branched form. It is prepared by reacting a starting mixture containing zinc vapour, a combustible gas and steam or a mixture of steam and carbon dioxide in a flame with an oxygen-containing gas in an oxidation zone, cooling the hot reaction mixture in a quenching zone and separating the solid material from the gas stream, the amount of oxygen in the oxidation zone being greater than the amount necessary for the complete oxidation of the combustible gas and the zinc vapour. The zinc oxide powder can be used as a constituent of sun protection compositions for protection against UV radiation.

    摘要翻译: 热解制备的氧化锌粉末,其BET表面积为10至200m 2 / g,其为聚集体形式,聚集体由具有不同形态的颗粒组成,并且0-10% 的聚集体为圆形,30-50%为椭圆形,30-50%为直线形式,20-30%为分支形式。 通过在氧化区中将含有锌蒸汽,可燃气体和蒸汽或蒸汽和二氧化碳的混合物在火焰中与含氧气体的起始混合物反应制备,在淬火区域中冷却热反应混合物并分离 来自气流的固体材料,氧化区中的氧的量大于可燃气体和锌蒸汽的完全氧化所需的量。 氧化锌粉末可用作防紫外线辐射防晒组合物的组分。

    Zinc oxide powder aggregates present in circular ellipsoidal, linear and branched form
    20.
    发明申请
    Zinc oxide powder aggregates present in circular ellipsoidal, linear and branched form 有权
    氧化锌粉末聚集体存在于圆形椭圆形,直链和支链形式中

    公开(公告)号:US20070037699A1

    公开(公告)日:2007-02-15

    申请号:US10572936

    申请日:2004-09-02

    IPC分类号: B01J23/00

    摘要: Pyrogenically prepared zinc oxide powder having a BET surface area of from 10 to 200 m2/g, which is in the form of aggregates, the aggregates being composed of particles having different morphologies, and 0-10% of the aggregates being in a circular form, 30-50% being in an ellipsoidal form, 30-50% being in a linear form and 20-30% being in a branched form. It is prepared by reacting a starting mixture containing zinc vapour, a combustible gas and steam or a mixture of steam and carbon dioxide in a flame with an oxygen-containing gas in an oxidation zone, cooling the hot reaction mixture in a quenching zone and separating the solid material from the gas stream, the amount of oxygen in the oxidation zone being greater than the amount necessary for the complete oxidation of the combustible gas and the zinc vapour. The zinc oxide powder can be used as a constituent of sun protection compositions for protection against UV radiation.

    摘要翻译: 热解制备的氧化锌粉末,其BET表面积为10至200m 2 / g,其为聚集体形式,聚集体由具有不同形态的颗粒组成,并且0-10% 的聚集体为圆形,30-50%为椭圆形,30-50%为直线形式,20-30%为分支形式。 通过在氧化区中将含有锌蒸汽,可燃气体和蒸汽或蒸汽和二氧化碳的混合物在火焰中与含氧气体的起始混合物反应制备,在淬火区域中冷却热反应混合物并分离 来自气流的固体材料,氧化区中的氧的量大于可燃气体和锌蒸汽的完全氧化所需的量。 氧化锌粉末可用作防紫外线辐射防晒组合物的组分。