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    Process for production of furnace black
    2.
    发明专利
    Process for production of furnace black 有权

    公开(公告)号：JP2004323848A

    公开(公告)日：2004-11-18

    申请号：JP2004125741

    申请日：2004-04-21

    Applicant: Degussa Ag ,  デグサ アクチエンゲゼルシャフト

    Inventor： KOPIETZ PETER ,  HEINZE VOLKER ,  JOHANN MATTHIAS

    IPC: C09C1/50

    CPC classification number: C09C1/50 ,  C01P2006/12

    Abstract: PROBLEM TO BE SOLVED: To provide a process in which deep-coloured furnace blacks can be produced directly in the furnace reactor. SOLUTION: The process for the production of furnace black by producing a stream of hot combustion gases in a combustion chamber, feeding the hot combustion gases along a flow axis from the combustion chamber through a reactor narrow point into a reaction zone, mixing carbon black raw material into the flow of the combustion gases in front of, inside or behind of the reactor narrow point and stopping carbon black formation downstream in the reaction zone by spraying in water, steam being jetted axially through the gas burner and optionally at the radial oil nozzles and beaded carbon black being introduced before and/or after the reactor narrow point. COPYRIGHT: (C)2005,JPO&NCIPI

    AQUEOUS CARBON BLACK DISPERSION SOLUTION, PREPARATION METHOD AND USE THEREOF
    4.
    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.

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