中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

41 records (took 0.02 seconds)

    21.
    发明专利
    未知

    公开(公告)号：DE1567449B1

    公开(公告)日：1970-11-12

    申请号：DE1567449

    申请日：1965-12-10

    Applicant: DEGUSSA

    Inventor： BIEGLER HANS DR ,  KALLRATH GOTTFRIED ,  KLEIN KURT

    IPC: B01J2/04 ,  C01B33/113 ,  C01B33/32

    Abstract: A granular composition is made by spraying a latex, for example Buna-Huls 220, into a granulating drum containing spray-dried water glass in the form of hollow spheres of bulk density 50-200 g./1. which have been rendered hydrophobic by treatment with a vaporous organic halogen silane, such as dimethyl chlorosilane. The latex is used in the amount of 10-50% by weight based on the dry weight of the hollow spheres.ALSO:Water-glass, spray-dried from aqueous solution, having the form of hollow spheres and a powder density of 50-200 g./l., is treated with vapours of organohalogen silanes and then heated for 30 minutes at 300 DEG C. The preferred organohalogen silane is dimethyl dichlorosilane, used in quantities of 2-20% by weight, based on the spray-dried waterglass. The vapours of mineral acids, preferably hydrogen chloride, can be used in addition to the organohalogen silanes in order to completely neutralize the alkali in the waterglass. The above-treated waterglass may be granulated by spraying with a latex emulsion in quantities of 10-50% based on the weight of spray-dried waterglass. The above materials are suitable for adsorbing water-immiscible organic materials, e.g. oil, from water.

    25.
    发明专利
    未知

    公开(公告)号：DE2513608A1

    公开(公告)日：1976-10-07

    申请号：DE2513608

    申请日：1975-03-27

    Applicant: DEGUSSA

    Inventor： REINHARDT HELMUT DIPL CHEM DR ,  TREBINGER KARL DIPL CHEM DR ,  KALLRATH GOTTFRIED

    IPC: C01B33/18 ,  C01B33/20 ,  C09C1/00 ,  C09C1/28 ,  C09C1/30

    Abstract: Finely divided hydrophobic silica or silicate is produced by treating the dry, moving particles with an organic silane at elevated temperature. The silica or silicate which had been prepared by wet precipitation or pyrogenically and which is in powdered form is heated to a temperature of about 200 DEG to 300 DEG C. with agitation and is brought to a fluidized condition and then is treated dropwise with an organosilane which is stable and boils below 300 DEG C.

    30.
    发明专利
    未知

    公开(公告)号：DE1521210A1

    公开(公告)日：1970-04-09

    申请号：DE1521210

    申请日：1965-11-12

    Applicant: DEGUSSA

    Inventor： KALLRATH GOTTFRIED ,  HANNS BIEGLER DR ,  HELMUT KNORRE DR ,  EUGEN MEYER-SIMON DR

    IPC: C23C18/16 ,  C23C18/20 ,  B44D1/092

    Abstract: 1,164,459. Coating with metals. DEUTSCHE GOLD-UND SILBER-SCHEIDEANSTALT. Nov.11, 1966 [Nov.12, 1965], No.50754/66. Heading C7F. In the electroless plating of a non-conductor e.g. PVC, polyethylene,polypropylene, cellulose hydrate or rubber with e. g. Cu, Ni or Cr, from 10 to 50% by weight of a filler is worked into the non-conductor before plating, the filler, e. g. silicas with Si-H bonds, metal oxides or alkali- or alkaline earth metal silicates or aluminosilicates, is such as will combine with a plating catalyst e. g. Pd or Ag, either before or after mixing with the non-conductor. The non-conductor may be applied to a metal, e. g. Fe or Al, substrate and the electroless coating may be subsequently electroplated. In an example silica with 6% silanol is worked into polythene, the formed resin is dipped in sulphuric acid, rinsed, immersed in an ammoniacal solution or Pd C1 2 and then plated.

Patent Agency Ranking