Construction Research & Technology Gmbh

Skw Bauchemie Gmbh

Conica Technik Ag

Werner Temme

Alois Maier

Ralph Bergs

Alfred Kern

Burkhard Walther

Franz Wolfertstetter

Stefan Ingrisch

Herbert Winkelmann

Michael Melchart

Christian Trieflinger

Shane Oliver McDonnell

Grzegorz Gomulka

Hans Haberle

Christian Krausche

Thorsten Pretz

Shane Oliver Mc Donnell

The present invention provides siliceous-based polyurea compositions, obtainable by reacting isocyanates, alkali silicates and hydratable aluminosilicates. Moreover, the present invention provides a process for the manufacture of these compositions, comprising the steps of mixing a hydratable aluminosilicate with an aqueous silicate and reacting this mixture with a polyisocyanate and/or a polyisocyanate prepolymer, optionally in the presence of a polyol and/or with the inclusion of an inert filler. Finally, the present invention provides the use of these compositions in the fields of aviation, automotive assemblies, construction, consumer products, fire protection, furniture components, insulation, shipbuilding and/or windmill construction. The compositions obtainable according to the present invention are lightweight, high load bearing, flame retarding materials.

Siliceous-based polyurea compositions

The invention relates to the use of aqueous, isocyanate-free, polyurethane dispersions with a solid content of &#x2267;30 wt. % and a solvent content of &#x2266;10 wt. % in sports floor coverings. The inventive polyurethane dispersions are particularly suitable for use as bonding agents for elastic coatings, spray coatings or flow coatings on elastic or rigid undersurfaces, adhesion promoters or primary coatings, fillers for sealing pores, adhesives for gluing pre-fabricated plastic coatings or for sealing sports floor coverings. The inventive polyurethane dispersions are environmentally friendly and easy to manufacture. They are also partly characterized by improved product features, e.g. mechanical properties, UV resistance and color stability, with respect to the corresponding sports floor coverings.

Use of aqueous polyurethane dispersions is formulations for sports floor coverings

Solvent-free polyrethane-polymer-hybrid-dispersion and use thereof

The invention relates to a two-component coating agent on an epoxy resin base, comprising a resin component A and a hardener component B, characterized in that the resin component A consists of between (15 and 18) weight percent, in relation to component A, of an epoxy resin and at least one additional component, chosen from among a reactive diluent, a filler, and other ingredients such as pigments, additives and extenders, that the hardener component B consists of between 20 and 50 weight percent, in relation to component B, of m-xylyl endiamine and at least one other component, chosen from among an adductor resin, an extender and an accelerator, and in that components A and B are present at a molar ratio of 1:0.8 to 1.2. The coating agent, which in addition to the two main components can also contain as much as 15 times their weight in aggregates having a particle size of up to 3.0 mm, is used primarily for coating the surfaces of backgrounds subject to strong chemical and/or mechanical stress and for bridging cracks. Coats can be up to 50 mm thick.

Two-component coating agent based on an epoxy resin for cement-bound backgrounds

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Bietingen, Germany

Werner Temme