Bayer Aktiengesellschaft

Hermann Kober

Ottfried Schlak

Armand De Montigny

Jan Mazanek

Hermann Gruber

Wolfgang Grape

Josef Pedain

Hans-Josef Laas

Helmut Reiff

Hanns-Peter Muller

Stephan Kirchmeyer

Martin Brahm

Bernd Klinksiek

Klaus Walz

Helmut Steinberger

Stefan Bohm

Manfred Schonfelder

Anke Reinschmidt

Karl-Georg Bottger

Dietbert Knofel

The present invention relates to a process for preparing mortar/concrete compositions by incorporating into the mortar/concrete compositions either before or during the mixing operation a water-dispersible polyisocyanate which

Use of nonionic, water-dispersible polyisocyanates as concrete additives

A thickener composition for thickening aqueous compositions which contains a) a water soluble or water dispersible thickener containing urethane groups, b) a non-ionic aromatic or alkyl-substituted aromatic emulsifier and c) a compound corresponding to formula I

Polyurethane-based thickener compositions and their use for thickening

Waterproofing agents for mineral building materials based on aqueous emulsions of organo-silanes and/or organosiloxane resins containing reactive groups in which the disperse phase has an average particle size of 0.55 to 1.1 .mu.m and a scope of particle size range of less than 1.3.

Impregnating emulsion for mineral building materials

The invention relates to a process for the production of paints and pargets having high early water resistance and comprising inorganic fillers, pigments, silicone resin, and a polymeric binder wherein

Facade paints and pargets having high early water resistance

The present invention relates to a coating composition which contains

Aqueous coating composition and its use for coating mineral substrates

Solutions of a) a fluorine-containing polyisocyanate in b) an isocyanate-inert solvent are used to impart water, oil and dirt resistance to porous inorganic substrates impregnated therewith. The fluorine-containing polyisocyanate is preferably selected from fluorine-containing polyisocyanates having a fluorine content in the form of perfluorinated alkyl groups of from about 15 to about 60% by weight and an isocyanate content of from about 0.5 to about 15% by weight. These isocyanates are obtained by reaction of (cyclo)aliphatic isocyanates with fluorine-containing mono- and polyhydric alcohols, and selected fluorine-containing alcohols suitable for the production of these polyisocyanates.

Polyisocyanate solutions useful for impregnating porous inorganic

A storage-stable aqueous emulsion of a low molecular weight, alkoxy-functional silicone resin by weight comprising approximately

Silicone resin emulsion

An aqueous emulsion, having a long shelf life, of a low molecular weight silicone resin comprising by weight

The present invention is directed to a process for sealing fissures and leaks in construction by pressing sealing agents comprising liquid compounds having free isocyanate groups, and optionally auxiliary aids and additives, into the constructions to be sealed, characterized in that sealing agents which are substantially free of solvent are used which contain as compounds having free isocyanate groups reaction products of polyhydroxy polyethers with polyisocyanate mixtures of the diphenyl methane series having at least about 20% by weight, based on the weight of the polyisocyanate component, of 2,4'-diisocyanato diphenyl methane, in an NCO/OH equivalent ratio of from about 2:1 to 15:1. The present invention is also directed to the novel sealing agents used in this process.

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Bergisch Gladbach, Germany

Hermann Kober