42.
    发明专利
    未知

    公开(公告)号:DE872265C

    公开(公告)日:1953-03-30

    申请号:DEB0008157

    申请日:1950-07-13

    Applicant: BASF AG

    Inventor: STASTNY FRITZ DR

    43.
    发明专利
    未知

    公开(公告)号:DE870331C

    公开(公告)日:1953-03-12

    申请号:DEB0008659

    申请日:1950-08-10

    Applicant: BASF AG

    Inventor: STASTNY FRITZ DR

    46.
    发明专利
    未知

    公开(公告)号:DE855621C

    公开(公告)日:1952-11-13

    申请号:DEB0007593

    申请日:1942-02-17

    Applicant: BASF AG

    Inventor: STASTNY FRITZ DR

    48.
    发明专利
    未知

    公开(公告)号:NL147169B

    公开(公告)日:1975-09-15

    申请号:NL6507084

    申请日:1965-06-03

    Applicant: BASF AG

    Abstract: Heat-insulating compositions are made by mixing porous plastic particles with an inorganic binder consisting of a suspension of water-containing particles of alkali metal silicate and inorganic fillers in an aqueous solution of an alkali metal silicate, and solidifying at a temperature above >0 DEG C. but below that at which the plastic sinters. Solidification can be assisted by extracting water down to a content of 20%, by treatment with carbon dioxide, or by the application of pressure. The porous plastic may be polyurethane, polystyrene, copolymers of styrene and acrylonitrile, acrylic acid, or butadiene, vinyl chloride, or copolymers of vinyl chloride and vinylidene chloride. Flame retardants such as inorganic halogen compounds or mixtures of chloroparaffins and antimony trioxide may be included. The alkali metal silicate powder is preferably sodium silicate containing 16-20% water and having an Na2O/SiO2 ratio of 1:2.0 to 1:4.0. The solution is of 15-60 DEG Be1 concentration, and the total water content varies between 25 and 75% of the weight of the silicate. Magnesia, talc, calcium carbonate, powdered asbestos, glass, quartz, zinc carbonate, sodium silicofluoride, or silica gel can be used as fillers in the ratio of 1:1 to 4:1 relative to the anhydrous silicate.

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