22.
    发明专利
    未知

    公开(公告)号:DE3834743A1

    公开(公告)日:1990-04-19

    申请号:DE3834743

    申请日:1988-10-12

    Applicant: DEGUSSA

    Abstract: Process for the preparation of a large-pore shaped carbon based on charcoal dusts, charcoal tar and caustic soda by mixing, kneading, shaping and carbonisation under an atmosphere as low in oxygen as possible at temperatures from 300 to 900 DEG C and activation with steam and/or carbon dioxide at temperatures from 700 to 1200 DEG C, wherein caustic soda is added in quantities from 5.0 to 15.0% by weight, relative to the quantity of charcoal dust.

    25.
    发明专利
    未知

    公开(公告)号:AT299517T

    公开(公告)日:2005-07-15

    申请号:AT03003641

    申请日:2003-02-18

    Applicant: DEGUSSA

    Inventor: KARL ALFONS DR

    Abstract: Production of post-treated carbon black involves fluidizing the black in a bed and then contacting it with a post-treatment agent.

    27.
    发明专利
    未知

    公开(公告)号:DE50007004D1

    公开(公告)日:2004-08-12

    申请号:DE50007004

    申请日:2000-09-13

    Applicant: DEGUSSA

    Abstract: A pigment preparation (I) contains a pigment and/or carbon black and a polymer and/or non-ionic surfactant, preferably cross-linked polyoxyethylene acrylic acid, fatty alcohol polyglycol ether, polyvinyl pyrrolidone, alcohol alkoxylate, alkylphenol glycol ether, lignin sulfonate and/or naphthalenesulfonic acid derivatives. An Independent claim is also included for a process for the preparation of the pigment preparation (I) by freeze drying of the aqueous preparation and optionally communication.

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