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    SURFACE-MODIFIED SUPERPARAMAGNETIC OXIDIC PARTICLES
    1.
    发明申请
    SURFACE-MODIFIED SUPERPARAMAGNETIC OXIDIC PARTICLES 审中-公开
    表面改性的超微磁性氧化物粒子

    公开(公告)号：WO2009132912A3

    公开(公告)日：2009-12-23

    申请号：PCT/EP2009053738

    申请日：2009-03-30

    Applicant: EVONIK DEGUSSA GMBH ,  MEYER JUERGEN ,  PRIDOEHL MARKUS ,  ZIMMERMANN GUIDO ,  KROELL MICHAEL ,  KATUSIC STIPAN

    Inventor： MEYER JUERGEN ,  PRIDOEHL MARKUS ,  ZIMMERMANN GUIDO ,  KROELL MICHAEL ,  KATUSIC STIPAN

    IPC: H01F1/00 ,  C09C1/24 ,  C09C1/28 ,  C09C3/12

    CPC classification number: C09C1/22 ,  B82Y25/00 ,  C01P2002/52 ,  C01P2002/70 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/42 ,  C01P2006/80 ,  C09C1/28 ,  C09C3/12 ,  H01F1/0045 ,  H01F1/37

    Abstract: 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/1; 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.

    Abstract translation: 表面改性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20至75m 2 / g; 碳含量为0.5至6.0重量％; 夯实密度为150至500克/升; 氯含量50至1000 ppm; 通过喷雾或气相沉积使氧化物与表面改性剂接触，然后对它们进行热处理来制备干燥损失0.1-4.0重量％。 表面改性的氧化物颗粒可以用作粘合剂中的填料。 其他应用领域可用于数据载体，成像过程中的造影剂，生化分离和分析过程，医疗应用，作为研磨剂，作为催化剂或作为催化剂载体，作为增稠剂，用于热绝缘， 作为分散助剂，作为流动助剂和铁磁流体。

    5.
    发明专利
    未知

    公开(公告)号：BRPI0617340A2

    公开(公告)日：2011-07-26

    申请号：BRPI0617340

    申请日：2006-09-15

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： HAEGER HARALD ,  PRIDOEHL MARKUS ,  ZIMMERMANN GUIDO ,  KUHMANN KARL ,  GOERING RAINER

    IPC: B29C65/14

    Abstract: The invention relates to plastics composite moldings obtainable via welding in an alternating electromagnetic field, in which the weld is obtained with the aid of a plastics material which comprises nano-scale, magnetic oxidic particles, which are composed of aggregated primary particles, and where the primary particles are composed of magnetic metal oxide domains whose diameter is from 2 to 100 nm in a non-magnetic metal oxide matrix or non-magnetic metalloid oxide matrix.

    Zinc oxide powder aggregates present in circular, ellipsoidal, linear and branched form
    7.
    发明专利
    Zinc oxide powder aggregates present in circular, ellipsoidal, linear and branched form 未知

    公开(公告)号：AU2004274149B2

    公开(公告)日：2009-10-29

    申请号：AU2004274149

    申请日：2004-09-02

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： KATUSIC STIPAN ,  ALBERS PETER ,  MIESS HORST ,  KRAMER MICHAEL ,  KRESS PETER ,  ZIMMERMANN GUIDO

    IPC: C01G9/03 ,  C09C1/04

    Abstract: Pyrogenically prepared zinc oxide powder having a BET surface area of from 10 to 200 m 2 /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.

    10.
    发明专利
    未知

    公开(公告)号：DE102006027334A1

    公开(公告)日：2008-01-10

    申请号：DE102006027334

    申请日：2006-06-13

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： KATUSIC STIPAN ,  ZIMMERMANN GUIDO ,  KRAEMER MICHAEL ,  GOTTFRIED HEIKE ,  KRES PETER

    IPC: C01G1/02

    Abstract: Process for preparing a metal oxide powder, in which starting materials are evaporated and oxidized, wherein a metal melt in the form of droplets and one or more combustion gases are fed to the evaporation zone of a reactor, where the metal melt is evaporated completely under nonoxidizing conditions, subsequently, the mixture flowing out of the evaporation zone is reacted in the oxidation zone of this reactor with a stream of a supplied oxygen-containing gas whose oxygen content is at least sufficient to oxidize the metal and the combustion gases completely.

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