PRODUCTION OF OXIDE BY THERMAL DECOMPOSITION METHOD, SUCH OXIDE AND ITS USE

    公开(公告)号:JPH10212118A

    公开(公告)日:1998-08-11

    申请号:JP1114498

    申请日:1998-01-23

    Applicant: DEGUSSA

    Abstract: PROBLEM TO BE SOLVED: To obtain an oxide having improved polishing ability by specifying the amts. of hydrogen and oxygen in a gaseous starting material mixture in a central tube for producing an oxide by a thermal decomposition method. SOLUTION: When an oxide is produced by a thermal decomposition method, hydrogen existing in starting material or fed from the outside into a gaseous mixture for a burner is allowed to react with chlorine from a silicon-halogen compd. existing in the gaseous mixture to remove the chlorine as gaseous HCl. In order to attain this reaction, the ratio of hydrogen fed into the burner to stoichiometrically required hydrogen is regulated to

    BORON OXIDE-SILICON DIOXIDE MIXED OXIDE

    公开(公告)号:JPH10182143A

    公开(公告)日:1998-07-07

    申请号:JP17513997

    申请日:1997-06-17

    Applicant: DEGUSSA

    Abstract: PROBLEM TO BE SOLVED: To safely produce a boron oxide-silicon dioxide mixed oxide having a specific BET surface area smaller than that of conventional mixed oxide by hydrolyzing a silicon halide and a volatile boron compound in a flame. SOLUTION: This mixed oxide has a BET surface area of /g, especially 10-80m /g. It can be produced by evaporating a silicon halide or an organosilicon halide and a volatile boron compound (e.g. trimethyl borate) separately or at the same time, supplying the vapor to a mixer, especially a burner having conventional structure with a carrier gas and mixed with hydrogen and air and, as necessary, other gases such as oxygen and nitrogen, reacting the gaseous components in the flame, cooling the hot gas and solid, separating the gas from the solid and, as necessary, removing the halide or a residual raw material attached to the product by the heat treatment with humid air.

    INK JET RECORDING MATERIAL
    3.
    发明专利

    公开(公告)号:JP2000118124A

    公开(公告)日:2000-04-25

    申请号:JP29125598

    申请日:1998-10-14

    Abstract: PROBLEM TO BE SOLVED: To provide an ink jet recording material of superior performance in all respects such as quick-drying properties, water absorbability, water resistance and others. SOLUTION: An ink jet recording material is provided with an ink acceptive layer containing hydrophilic resin and an inorganic pigment, and silica particles with their surface layers of silica particles doped with alumina are used as the inorganic pigment of the ink acceptive layer. The alumina doped silica particles are manufactured by a process formed of the thermal decomposition process and the flame hydrolysis process combined together, and the silica surface are doped with alumina. It is suitable that the ink acceptive layer contains 5-200 pts.wt. silica doped with alumina to 100 pts.wt. hydrophilic resin.

    METHOD AND APPARATUS FOR MANUFACTURING AEROSOL OF SMALL LIQUID DROPLET HIGHLY LOADED IN LIQUID PHASE AND AEROSOL AND ITS USAGE

    公开(公告)号:JPH10286503A

    公开(公告)日:1998-10-27

    申请号:JP3875998

    申请日:1998-02-20

    Applicant: DEGUSSA

    Abstract: PROBLEM TO BE SOLVED: To manufacture an aerosol which contains a highly concentrated salt solution in a gas phase and at the same time, ensures a liquid droplet spectrum having as small a liquid droplet diameter as possible. SOLUTION: This aerosol of small liquid droplet is manufactured by a device of such a functional structure that ultrasonic vibrators vibrate level with a liquid level or an a 1-20 deg. inclined plane, then each of the vibrators placed in a recessed part unexceptionally vibrates level with the liquid level or on the 1-20 deg. inclined plane, and a liquid of such a nature that its height can be controlled on a vibrating plane is present on the ultrasonic vibrators. Thus it is possible to obtain the aerosol which shows a liquid load exceeding 100 g/Nm in the gas phase and the d90 value of a liquid droplet spectrum at not more than 30 μm.

    Boroxid-Siliciumdioxid-Mischoxid
    9.
    发明公开

    公开(公告)号:EP0814057A1

    公开(公告)日:1997-12-29

    申请号:EP97106681

    申请日:1997-04-23

    Applicant: DEGUSSA

    CPC classification number: C03C1/00 C01B35/10 C01P2006/12

    Abstract: Boroxid-Silicium-Mischoxid, welches eine BET-Oberfläche von kleiner 100 m /g aufweist und Oxide von Aluminium, Titan oder Zirkon enthalten kann, wird auf pyrogenem Wege durch Flammenhydrolyse hergestellt. Das Mischoxid wird zur Herstellung von Gläsern verwendet.

    Abstract translation: 氧化硼 - 二氧化硅混合氧化物的BET表面积小于100(优选10-80,特别是25-50)m 2 / g。 混合氧化物的生产包括将蒸发(有机)硅氧烷与可蒸发的硼化合物混合,将蒸气与载气混合在混合器中。 在一个燃烧器与H2和空气和选择。 还有气体 氧气和氮气,使气体在火焰中反应,冷却热气体和固体,并选择。 通过用潮湿空气进行热处理,除去产物上的卤化物或原料残留物。

Patent Agency Ranking