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    Production of heat-resistant organic foam synthetic resins
    65.
    发明专利
    Production of heat-resistant organic foam synthetic resins 未知

    公开(公告)号：GB1031138A

    公开(公告)日：1966-05-25

    申请号：GB5260064

    申请日：1964-12-29

    Applicant: BASF AG

    Inventor： STASTNY FRITZ ,  GAETH RUDOLF ,  SCHMITT BERNHARD ,  HAARDT UDO

    IPC: C04B28/26 ,  C08J9/236

    Abstract: Heat-resistant organic foam materials are prepared by introducing into an aqueous solution containing alkali metal silicate, which may contain suspended solid water-containing alkali metal silicate, expandable finely divided synthetic resin in such quantity that the ratio of the weight of added synthetic resin to the weight of anhydrous substances contained in the solution or suspension is from 1:9 to 9:1 (preferably 3:7 to 7:3) and then foaming the mixture at a temperature above the softening point of the expandable synthetic resin to form a homogenous foam material. The mixture may be solidified at a temperature below that at which foaming takes place, prior to expansion. Substances which react with alkali metal silicates to form water-insoluble silicates, e.g. zinc oxide, talc, asbestos flour, magnesium oxide or calcium carbonate may be added to the solution before the addition of the synthetic resin particles. Fibrous materials, metal cloth or plastic cloth and mineral fibre mats may be added to the mixture, prior to expansion, to increase the mechanical stability of the foam. 1 to 10% by weight of polyhydric alcohols, e.g. glycerin and sugar such as cane sugar, may be added advantageously. The synthetic resin particles used may be pre-foamed but capable of further expansion. Suitable particles consist of polystyrene or copolymers of styrene with acrylonitrile, acrylic acid and butadiene. Particles based vinylidene chloride or chlorinated polyvinyl chloride are also suitable. Suitable expanding agents are one which do not dissolve the particles or only slightly swell them, e.g. aliphatic hydrocarbons such as propane, n-butane and n- or iso-pentane. Powdered expanding agents which liberate gas at elevated temperature, e.g. azodibutyronitrile, may also be used. The synthetic resin particles may be made flame retardant by adding inorganic halogen compounds or by mixing with chloroparaffin powder or antimony trioxide.ALSO:Formed synthetic resin material containing alkali metal silicates (see Division C3) may be provided with a protective layer, for example by applying lacquers of epoxide resins, polyamides, polyvinyl chloride or copolymers of vinylidene chloride and other polymerizable substances or by applying a coat of plaster. Synthetic resins specified are polystyrene, styrene-acrylonitrile, acrylic acid-butadiene, polyvinylidene chloride, chlorinate polyvinyl chloride. Fibrous materials, metal cloth, plastic cloth, mineral fibre mats may be added to the foamable synthetic resin mixture.

    66.
    发明专利
    未知

    公开(公告)号：FR1435618A

    公开(公告)日：1966-04-15

    申请号：FR19449

    申请日：1965-06-03

    Applicant: BASF AG

    Inventor： STASTNY FRITZ ,  GAETH RUDOLF ,  SCHMITT BERNHARD ,  HAARDT UDO

    IPC: C04B28/26 ,  C08J9/22 ,  C08J9/236

    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.

    70.
    发明专利
    未知

    公开(公告)号：NO177341C

    公开(公告)日：1995-08-30

    申请号：NO920295

    申请日：1992-01-22

    Applicant: BASF AG

    Inventor： HAARDT UDO ,  SEILER ERHARD ,  TATZEL HERMANN ,  SCHWAGER HARALD ,  DOMAS FRIEDRICH

    IPC: B29C44/00 ,  B29L31/58 ,  B32B5/18 ,  B32B5/20 ,  B32B27/32 ,  B32B7/12

    Abstract: Shock-absorbing propylene polymer composite moulded articles containing …… a. a layer of thickness 0.5 to 10 mm, containing a propylene polymer of melting point 130 to 165 DEG C, … b. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … c. a foam layer of thickness 3 to 200 mm having a density of 0.015 to 0.1 g/cm based on a propylene copolymer of melting point 125 to 155 DEG C, … d. an intermediate layer of thickness 0.05 to 0.5 mm of a melt adhesive based on an olefin copolymer of melting point 90 to 140 DEG C, … e. a layer of thickness 0.5 to 10 mm containing a propylene polymer of melting point 130 to 165 DEG C. …

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