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    Elements for securing protective screens to articles to be protected from the action of heat and flames
    25.
    发明专利
    Elements for securing protective screens to articles to be protected from the action of heat and flames 未知

    公开(公告)号：GB996553A

    公开(公告)日：1965-06-30

    申请号：GB596463

    申请日：1963-02-14

    Applicant: BASF AG

    Inventor： GAETH RUDOF ,  SCHMITT BERNHARD ,  BREU RUDOLF

    IPC: A62C3/00 ,  E04B1/94 ,  F27D1/14

    Abstract: 996,553. Securing means for protective screens. BADISCHE ANILIN- & SODA-FABRIK A.G. Feb. 14, 1963 [Feb. 21, 1962], No. 5964/63. Heading A5A. Means for securing a protective screen of incombustible material to an article comprise a securing element, e.g. a nail, bolt or dowel, which is surrounded for at least part of its length between the screen and the article by one or more plates composed of an alkali metal silicate containing 20 to 70% by weight water and 10 to 40% synthetic silicate fibres, e.g. of glass or mineral wool. Such plates expand to form a stable foam structure when heated and thus will then insulate the securing element. Their expansion may also serve to force the screen away from the article to provide an air space therebetween, the unexpanded construction being retained in place by an easily heatdeformable spacer which may surround a part of the securing element either between the screen and article or on the side of the article away from the screen. Alternatively, the securing element may be recessed into the article and the deformable spacer placed so as to bear against a rigid support for the unexpanded plates. Figs. 1 and 2, 3 and 4 and 5 and 6 depict three embodiments of the invention before and after exposure to heat wherein the screen 1 is secured by bolt 3 to the article 5, the expandable plates 4 being situated therebetween. The heat-deformable spacer 5 maintains the unexpanded construction rigid. Specification 944,133 is referred to.

    Production of insulating materials having low specific gravity
    29.
    发明专利
    Production of insulating materials having low specific gravity 未知

    公开(公告)号：GB1149211A

    公开(公告)日：1969-04-16

    申请号：GB2572366

    申请日：1966-06-09

    Applicant: BASF AG

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

    IPC: C04B16/08 ,  C04B28/02 ,  C04B28/26 ,  C04B38/08 ,  E04B1/76

    Abstract: 1,149,211. Laminates. BADISCHE ANILIN- & SODA FABRIK A.G. 9 June, 1966 [16 June, 1965], No. 25723/66. Heading B5N. [Also in Division C3] Boards of thermal insulating material of low s.g. may be provided with an outer layer of, e.g. metal, plastics or wallpaper, or laminated with asbestos sheets on both sides, or with an asbestos sheet on one side and plasterboard on the other side. The insulating materials are made by mixing (a) porous plastics particles with an aqueous solution of (b) an alkali metal silicate to which has been added (c) a substance which reacts with (b) to form insoluble compounds, (c) being tetrachlorophthalic acid, an alkali metal borate, an organic ester, an organic anhydride, a silicofluoride, a borofluoride, or ZnO or mixtures thereof in an amount such that at least 10% of the silicic acid content of (b) is precipitated; the mixture is then consolidated to form a compact moulding. (a) may be expanded polystyrene or a closed-cell polyurethane foam and up to 95% by volume may be present. (b) may be Na or K silicate. The mixture may also contain one or more fillers, e.g. talc, chalk, kaolin, glass powder, or quartz powder. It may also contain a fire retardant, e.g. inorganic halogen compounds, or mixtures of chloroparaffin powder and Sb 2 O 3 . The components may be mixed with cooling, e.g. at 5-20‹ C., and set at from room temperature to 90‹ C. The mixture may be compressed before consolidation by 10- 90% of the original volume. Reference is made to a process in which expandable particles are introduced into a mixture containing alkali metal silicate and are subsequently expanded.

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