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    AQUEOUS CARBON BLACK DISPERSION SOLUTION, PREPARATION METHOD AND USE THEREOF
    22.
    发明专利
    AQUEOUS CARBON BLACK DISPERSION SOLUTION, PREPARATION METHOD AND USE THEREOF 失效

    公开(公告)号：JP2001072914A

    公开(公告)日：2001-03-21

    申请号：JP2000217872

    申请日：2000-07-18

    Applicant: DEGUSSA

    Inventor： KARL ALFONS ,  KLEINHENZ HORST ,  KALBITZ WERNER ,  TAUBER GERD ,  STUEBBE ANDREAS ,  JOHANN MATTHIAS

    IPC: B41J2/01 ,  B41M5/00 ,  C09C1/56 ,  C09C1/58 ,  C09D7/12 ,  C09D11/037 ,  C09D11/324 ,  C09D17/00 ,  C09D201/00 ,  C09D11/00

    Abstract: PROBLEM TO BE SOLVED: To obtain a dispersion solution which does not give a stain after sprayed on the substrate as well as good in storage stability by compounding carbon black, a cationic surfactant and a nonionic surfactant with water at a specific ratio. SOLUTION: 1 to 45 mass % of carbon black, 1 to 40 mass % of a cationic surfactant and 0.5 to 10 mass % of a nonionic surfactant are compounded. For the carbon black, a pigment, a pigment carbon black having an average particle size of 8 to 80 nm as the primary particles and the DBP value of 40 to 200 mg/100 g, which is prepared using a furnace method, gas black method, channel method or lamp black method, can be used. The carbon black is dispersed in water together with a wetting agent, which may be dispersed by use of a purl mill, an ultrasonic apparatus or Ultra-Turrax according to circumstances. Alternatively, it is further centrifuged or filtered. The pH of the dispersion solution is preferably 1 to 4.

    PRODUCTION OF SOLAR-GRADE SILICON FROM SILICON DIOXIDE
    23.
    发明专利
    PRODUCTION OF SOLAR-GRADE SILICON FROM SILICON DIOXIDE 未知

    公开(公告)号：NZ591284A

    公开(公告)日：2013-02-22

    申请号：NZ59128409

    申请日：2009-09-28

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： RAULEDER HARTWIG ,  MUH EKKEHARD ,  SIRAY MUSTAFA ,  NAGLER PETER ,  FRINGS BODO ,  LUNT-RIEG INGRID ,  KARL ALFONS ,  PANZ CHRISTIAN ,  GROTH THOMAS ,  STOCHNIOL GUIDO ,  ROCHNIA MATTHIAS ,  LANG JURGEN ERWIN ,  WOLF OLIVER ,  SCHMITZ RUDOLF ,  NOWITZKI BERND ,  WEWERS DIETMAR

    IPC: C01B31/02 ,  C01B33/025

    Abstract: Disclosed herein is a process for preparing pure silicon, comprising the reduction of purified silicon oxide with one or more pure carbon sources, wherein the pure carbon sources are selected from the group consisting of carbohydrate, graphite, coke, coal, carbon black and thermal black, the purified silicon oxide has a content of other polyvalent metals of less than or equal to 300 ppm, based on the silicon oxide, and wherein the purification of the silicon oxide comprises the following steps a to d): providing silicates dissolved in an aqueous phase; contacting with a strongly acidic cation exchange resin of the hydrogen type, in an amount which is sufficient for the ion exchange of essentially all other metal ions in the aqueous phase, the temperature of the aqueous phase being in the range from 0 DEGREE C to 60 DEGREE C, obtaining the aqueous phase of an active silica with an SiO2 concentration of from 2 to 6% by weight and a pH of from 0 to 4, obtaining purified silicon oxide, and wherein further silicon carbide is added in a formulation comprising the purified silicon oxide and at least one pure carbon source silicon or the purified silicon oxide or at least one pure carbon source and wherein pure silicon means a material displaying ? 5 ppm of aluminium, ?10 ppm to 0.0001 ppt of boron, ? 2 ppm of calcium, ? 20 ppm of iron, ? 10 ppm of nickel,

    METHOD FOR PRODUCING SILICON
    24.
    发明专利
    METHOD FOR PRODUCING SILICON 未知

    公开(公告)号：ZA201203541B

    公开(公告)日：2013-01-30

    申请号：ZA201203541

    申请日：2012-05-15

    Applicant: EVONIK DEGUSSA GMBH

    Inventor： KARL ALFONS ,  RAULEDER HARTWIG ,  LANG JURGEN ERWIN ,  FRINGS BODO

    IPC: C01B20060101 ,  F27B20060101 ,  F27D20060101

    Abstract: Producing silicon, preferably solar silicon, comprises reducing silicon dioxide with carbon in an arc furnace. The parts of the furnace or the electrodes are made of a graphite material, which in turn are obtained from a carbon material. The carbon material is obtained by pyrolysis of at least one carbohydrate, preferably at least one sugar. An independent claim is also included for a graphite molded part, preferably molded part of the arc furnace, preferably graphite electrode, which is doped with silicon oxide, preferably silicon dioxide and/or silicon carbide.

    NEGRO DE HUMO, METODO PARA PRODUCIR NEGRO DE HUMO, Y DISPOSITIVO PARA IMPLEMENTAR EN METODO
    27.
    发明专利
    NEGRO DE HUMO, METODO PARA PRODUCIR NEGRO DE HUMO, Y DISPOSITIVO PARA IMPLEMENTAR EN METODO 未知

    公开(公告)号：CO5950115A1

    公开(公告)日：2008-08-29

    申请号：CO07080106

    申请日：2007-08-06

    Applicant: DEGUSSA

    Inventor： QUITMANN CATHARINA ,  KARL ALFONS ,  KATZER MATTHIAS ,  KRAUSS KAI ,  STANYSCHOFSKY MICHAEL

    IPC: C08K3/04 ,  C09C1/52 ,  F23C99/00 ,  F23D14/56

    Abstract: ? Un negro de humo CARACTERIZADO PORQUE tiene una distribución de tamaños de agregado con una relación (d90-d10)/d50 menor o igual que 1,1. Un negro de humo de acuerdo con la reivindicación 1, CARACTERIZADO PORQUE la distribución de tamaños de agregado tiene una relación entre el ancho medio (FWHM) y Drnode menor o igual que 0,6. Un negro de humo de acuerdo con la reivindicación 1 y 2, CARACTERIZADO PORQUE el contenido de óxido superficial es mayor que 50 mmol/kg. Un método para producir un negro de humo de acuerdo con la reivindicación 1, CARACTERIZADO PORQUE comprende combinar una mezcla que comprende un gas portador y materia prima de negro de humo, opcionalmente con aire caliente, hacer pasar la mezcla de gas a un tubo quemador, quemar la mezcla de gas en las aberturas del tubo quemador, y aspirar y enfriar las llamas, junto con el aire ambiental aspirado libremente por succión desde e] exterior, a través de una campana de salida enfriada que se estrecha progresivamente, donde la campana de salida enfriada que se estrecha progresivamente tiene una relación entre altura (h) y ancho (b) de 1-100, donde el ancho está referido al borde superior de la campana, donde el ancho (b) es de entre 0,5 y 10 mm, y el caudal en el punto más angosto de la campana es de entre 10 y 200 m/s.

    OXIDATIVELY AFTERTREATED CARBON BLACK
    29.
    发明专利
    OXIDATIVELY AFTERTREATED CARBON BLACK 未知

    公开(公告)号：CA2272768C

    公开(公告)日：2008-02-26

    申请号：CA2272768

    申请日：1999-05-28

    Applicant: DEGUSSA

    Inventor： KARL ALFONS

    IPC: C09C1/48 ,  C09C1/52 ,  C09C1/54 ,  C09C1/56 ,  C09C3/06 ,  C09D7/12 ,  C09D11/00 ,  C09D11/16 ,  C09D17/00

    Abstract: The invention relates to an oxidatively aftertreated carbon black. It is characterised in that its content of volatile constituents is more than 10 wt.%, based on its total weight, and the ratio of its CTAB surface area to the iodine number is greater than 2 m2/mg. The carbon black according to the invention is used preferably as pigment carbon black for the production of water-based paints, printing inks and as inks for mechanical and manual recording and drawing instruments. The combination of properties imparts to the carbon black an excellent dispersibility in water-based binder systems. The paints, printing inks and printer inks produced from it have an outstanding stability in storage.

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