The new fire retardant elements are characterized in that they are foam mouldings which are elastic in the moist state and contain a liquid flameproofing impregnation, and the fire retardant elements are protected against moisture loss before installation and solidify on drying after installation. A process for the production of such fire retardant elements and mouldings which comprise such fire retardant elements are likewise described and claimed.

Fire retardant elements

A fire resistant and water resistant expansion joint system comprises a compressed lamination of fire retardant infused open celled foam, one coat of an elastomeric waterproofing or water resistant material on the lamination, and another coat of an intumescent material on an opposing surface of the lamination, thereby providing fire resistance in one direction and water resistance in the opposite direction. The intumescent material may be further coated with a similar elastomeric material, thereby providing fire resistance in one direction and water resistance in both directions. In the alternative, the compressed lamination may comprise first and second opposing layers of intumescent material thereon each having a respective layer of elastomeric material to provide both water resistance and fire resistance in both directions.

Fire and water resistant expansion joint system

A fire and water resistant expansion joint system has a cover plate; a spline attached to the cover plate along a first edge of the spline; and two portions of foam, each portion being located on an opposing face of the spline. The foam has a fire-retardant material infused therein. The spline depends from the cover plate and is positioned in a gap between substantially coplanar substrates such that the cover plate overlies the gap. Each portion of the foam is compressed between a respective face of the spline and a face of one of the coplanar substrates.

Fire and water resistant expansion and seismic joint system

An expansion joint system includes: a core; and a layer of an elastomer disposed on the core. The core and the layer of elastomer disposed thereon form an elongated section, the elongated section configured to be oriented vertically between substantially coplanar substrates. The expansion joint system further includes a termination section located at one end of the elongated section and comprising a flared end forming an angle with the elongated section and configured to direct fluid and/or particles and/or solvents away from the expansion joint system.

Expansion joint system

A fire and/or water resistant expansion joint system for installation between substrates of a tunnel. The system includes a coating applied at a predetermined thickness to the substrates and a fire and water resistant expansion joint. The expansion joint includes a core and a fire retardant infused into the core. The core is configured to define a profile to facilitate the compression of the expansion joint system when installed between the substrates. The coating and the fire and water resistant expansion joint are each capable of withstanding exposure to a temperature of at least about 540° C. or greater for about five minutes.

Factory fabricated precompressed water and/or fire resistant tunnel expansion joint systems, and transitions

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 binder, and a sulfur compound and a polyurethane foam provided with such flame-protection composition

Zur Verbesserung der Flammschutzwirkung ohne wesentliche Beeintrachtigung der mechanischen Eigenschaft der mit dem Flammschutzmittel uberzogenen Gegenstande ist das Flammschutzmittel mit einer mindestens eine SulfoGruppe bzw. Sulfoniumionen enthaltenden Verbindung in einem Gewichtsanteil von 7,5-30% versehen. To improve flame retardancy without substantially affecting the mechanical property of the coated with the flame retardant articles containing the flame retardant with at least a sulfo group, or sulfonium compound is provided in a weight percentage of 7.5-30%. Dabei handelt es sich vorzugsweise um ein wasserlosliches Ammoniumsalz. It is preferably a water-soluble ammonium salt. Als Bindemittel dient eine wasrige Losung oder wasrige Dispersion eines organischen Materials, insbesondere eines Acrylats bzw. eines Polymers oder Copolymers auf der Basis von Acrylsaureester. As the binder, an aqueous solution or aqueous dispersion of an organic material, in particular an acrylate or a polymer or copolymer based on acrylic acid ester is used. Es empfiehlt sich besonders, wenn im wesentlichen offenzelliger Polyurethanschaum auf Polyatherbasis mit einem solchen Flammschutzmittel getrankt wird, das ein Ammoniumsalz einer Aminosulfonsaure, und zwar in einem Anteil von etwa 12% aufweist. It is especially recommended when it is substantially open-celled polyurethane foam impregnated on polyether with such a flame retardant, having an ammonium salt of an aminosulfonic acid, in a proportion of about 12%. Derart getrankte Polyurethanschaumstoffe eignen sich besonders gut zur Verwendung bei Polsterungen solcher Gegenstande bzw. in solchen Raumen, bei denen ein Brandschutz nach der Brandschutzklasse B1 verlangt wird. Such impregnated polyurethane foams are particularly suitable for use in upholstery of such objects or in such spaces in which a fire after the fire protection class required B1.

Manhal Al-Tabaqchali

Papers

Flame protection composition comprising aluminum trihydrate, organic binder, and a sulfur compound and a polyurethane foam provided with such flame-protection composition

Flame retardant composition, polyurethane foam containing this flame retardant composition, and process for its production