Other

Heidelberger Zement Ag

Odenwald-Chemie Gmbh

Ludwig Wesch

Carlos Fradera Pellicer

Luis C Roma

Edgar Weiss

Adolf Meyer

Manhal Al-Tabaqchall

Manhal Al-Tabaqchali

A fire resistant fire-retarding laminate includes foaming-agent layers combined with at least one restricting layer, which restrains expansion of the foaming-agent layer under heat and fire exposure and improves the mechanical integrity of the composite without any substantial heat induced expansion of its own. Instead of glass or graphite fillers, special non-graphitic carbon fillers are used in fibrous or platelet-like form. Incompletely carbonized material amoung others can be used. Such fillers provide improved restraint on the expansion of the foaming-agent layer and cooperate to preserve its structural integrity.

Fire-retarding laminated element and a method of controlling expansion

The invention relates to a method and apparatus of manufacture of fiber reinforced tubular bodies which comprise in combination at least on cover layer and at least one core layer; said layers being wound upon a winding mandrel the shape of which corresponds to the desired shape of the hollow body. The method includes the use of a control unit which comprises a compression tunnel adapted to reduce the thickness of the core and cover layers thereby applying compressional and tensile forces simultaneously to the layers resulting in a more homogeous and therefore stronger bond between the layers.

Process and apparatus for the manufacture of tubular hollow bodies and

In order to improve the flame-protection effect without substantially impairing the mechanical properties of the articles covered with the flame protection agent, the flame protection agent is provided with a compound in a proportion by weight of 7.5 to 30% which contains at least one sulfo group or sulfonium ion. This compound is preferably a water-soluble ammonium salt. As binder there is used an aqueous solution or aqueous dispersion of an organic material, particularly of an acrylate or of a polymer or copolymer having a base of acrylic acid ester. It is particularly advantageous if substantially open-cell polyurethane foam having a base of polyether is impregnated with such a flame-protection agent which contains an ammonium salt of an aminosulfonic acid in a proportion of about 12%. Polyurethane foams impregnated in this manner are particularly well suited for use in cushionings of articles or in premises for which class B1 fire protection is required.

Flame protection composition comprising aluminum trihydrate, organic

1. Apparatus for locating a target which radiates or reflects electromagnetic energy comprising a circular-scan cathode-ray tube including a screen and an electron beam moving over said screen, regions of said screen fluorescing when impinged upon by said electron beam to generate light energy, a plurality of semi-conductor elements disposed on said screen, each of said semi-conductor elements includng a layer of photoconductive material adjacent said screen and a layer of photo-dielectric material on said layer of photoconductive material and adapted to receive electromagnetic energy from said target, said photoconductive material having a low resistance only when receiving light energy, said photo-dielectric material changing electrical capacitance when receiving electromagnetic energy, means for conductively connecting together said layers of photoconductive material to provide a first terminal, an electromagnetic radiation permeable conductor disposed on all other said layers of photo-dielectric material and including a second terminal, and an oscillator means including a tuned circuit connected to said first and second terminals, said oscillator means transmitting a target indicating signal when the layer of photo-dielectric material of one of said semi-conductor elements receives electromagnetic energy simultaneously with the receipt of light energy by its associated layer of photoconductive material.

Detection process and apparatus

There is disclosed, in one aspect, an emulsion of a hydrophilic epoxy resin containing foam forming additives which impart fire retardant properties and which compositions are useful for coating substrates. These compositions comprise (a) foam-forming, gas-evolving and/or chain-terminating additives which have an endothermic reaction at elevated temperatures and/or fillers and, (b) epoxide resin as the binder. This resin has been cured with an amine curing agent. In another aspect, the present invention comprises a method for producing fire-proof layers of structures which must be protected from fire. This method comprises coating at least part of that structure with the composition described above.

Fire-retardant composition and method for producing fire-resistant layers

In order to improve the flame protection effect without substantially impairing the mechanical properties of the articles covered with the flame protection agent, the flame protection agent is provided with a compound in a proportion by weight of 7.5 to 30% which contains at least one sulfo group or sulfonium ion. This compound is preferably a water soluble ammonium salt. As binder there is used an aqueous solution or aqueous dispersion of an organic material, particularly of an acrylate or of a polymer or copolymer having a base of acrylic acid ester. It is particularly advantageous if substantially open-cell polyurethane foam having a base of polyether is impregnated with such a flame protection agent which contains an ammonium salt of an aminosulfonic acid in a proportion of about 12%. Polyurethane foams impregnated in this manner are particularly well suited for use in cushionings of articles or in premises for which class B1 fire protection is required.

Flame protection composition comprising aluminum trihydrate organic

A multi-layer load-bearing board comprising at least three layers of different composition includes a core or basic layer comprised of a cementitious inorganic material, a cover layer of a fiber-reinforced resin subjectable to forces and an intermediate layer of a hydrophilic and water-dilutable or water miscible resin interconnecting the core or basic layer and cover layers in a force-transmitting manner.

Multi-layer board

A fire-retarding foam-forming epoxy resin composition is provided and a method for applying the same as a coating on a substrate, said composition comprising essentially an amine-hardened epoxy resin containing 30% to 70% by weight of said amine-hardened epoxy resin of at least two substances selected from the group consisting of more than 20 mol% nitrogen and/or phosphorus having a decomposition temperature ranging from about 100.degree. C to 400.degree. C. The composition may optionally contain fillers which react endothermically at elevated temperatures.

Fire-retarding epoxy resin material, method for  the manufacture thereof

A method is provided for producing a fine granular concentrate of fire-retarding, foam-forming solids for addition to host material including plastics, paints, coating compositions and the like by mixing particles of solid fire-retarding additives of particle size less than about 5.mu.m with a polymeric material wherein the particles are surrounded and coated by said polymeric material, said polymeric material being compatible with or the same as the host material to which the coated particles are subsequently added to confer fire-retarding and foam-forming properties thereto. The steps include drying said polymeric-particle mixture, comminuting said polymeric-particle mixture to a granular product of less than about 50.mu.m, and repeating the coating procedure at least one more time on said granular product by mixing said granular product with polymeric material, followed by drying and comminuting said granular-polymeric mixture to provide a granular concentrate having a size of less than about 50.mu.m with an outer layer of said polymeric material, said polymeric material in at least the outer layer of granular concentrate being characterized by being capable of splitting off nitrogen and/or water under pyrolitic conditions.

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Heidelberg, Germany

Ludwig Wesch