Bayer Aktiengesellschaft

Bayer Materialscience Ag

Lanxess Deutschland Gmbh

Bayer Intellectual Property Gmbh

Richard Kopp

Wolfgang Fischer

Gerhard Grogler

Heinrich Hess

Werner Rasshofer

Andreas Ruckes

Klaus Konig

Otto Ganster

Manfred Bock

Jurgen Schwindt

Holger Meyborg

Rudolf Hombach

Helmut Hurnik

Reiner Paul

Gunter Arend

Horst Stepanski

James M Barnes

Hans-Albrecht Freitag

Eduard Hansel

Manfred Schmidt

Dieter Dieterich

Harald Blum

Heinz Pudleiner

Thomas Scholl

Jan Weikard

Helmut Reiff

Artur Reischl

Hanns-Peter Muller

Edgar Leitz

Walter Schafer

Ernst Grigat

Christoph Irle

Detlev Joachimi

Manfred Dollhausen

Robert Eiben

Wolfgang Reichmann

Hans-Georg Wussow

Stefan Sommer

Geza Avar

Lutz Schrader

Holger Casselmann

Werner Clarenz

James-Michael Barnes

Klaus Seel

Hans-Dieter Ruprecht

Erhard Luehmann

Alfred Neuhaus

Karl Nutzel

Klaus Zander

Hermann Schafer

Peter Schuster

Friedhelm Pilger

Jürgen Kirsch

Urs Thiery

Lutz Georgias

Werner Drouve

Max Mann

Klaus Mader

Rudolf Punessen

Alexander Iwanovitsch Korschunow

Konstantin Awtonomowitsch Kapitanow

Gennadij Grigorjewitsch Sawkin

Wladimir Michajlowitsch Nikitin

Jelena Saweljewna Nasarowa

Igor Leonidowitsch Ryshakow

Hardy Jüngermann

Manfred Müller

Hans Tups

Gerhard Groglerl

Burkhard Werden

Hans D Thomas

Peter-Alexander Gottschalk

The present invention describes the preparation of an aqueous polyurethane dispersion which is cured by radiation, and its use as binder.

Process for producing hard coating systems based on aqueous polyurethane dispersions

The present invention provides a mixture containing a) at least 26 wt. % of gadolinium and b) one or more elements, alloys and/or compounds from the group consisting of barium, indium, tin, lanthanum, molybdenum, niobium, tantalum, zirconium and tungsten, a process for the preparation of this mixture, use of the mixture as radiation protection, use of the mixture to prepare polymeric radiation protection substances, a process for preparing radiation screening rubbers, thermoplastic materials and polyurethanes, a process for preparing products from the polymeric radiation protection substances and products made from these polymeric radiation protection substances.

Lead-free mixture as a radiation protection additive

Non-crystallizing N,N&prime;-disubstituted N-(2-hydroxyalkyl)-ureas are used as hydrolysis protection agents in plastics containing ester groups. These disubstituted hydroxy-alkylureas impart excellent protection from hydrolysis to plastics containing ester groups and can be added directly to the plastics to be stabilized without the addition of special solvents.

N,N&prime;-disubstituted N-(2-hydroxyalkyl)-ureas

Free-flowing compression molding compositions made up of from about 40 to about 80 wt. % of organic filler, from about 20 to about 60 wt. % of an organic reactive resin, and optionally further auxiliary substances and additives. The reactive resin contains an epoxide which may be liquid, a latent catalyst and a powdered polyisocyanate which is solid at room temperature.

Free-flowing compression molding compositions and processes for their

The present invention relates to a heat curable, one-component polyurethane reactive compositions containing

Heat curable, one-component polyurethane reactive compositions

The present invention is directed to novel urea group-containing polyisocyanates modified with long chain compounds having molecular weights of 400 to about 10,000. The present invention is also directed to a process for the preparation of modified urea group-containing polyisocyanates by reacting starting polyisocyanates which are free from urea groups with water to form urea groups in an inert reaction medium or in an aqueous mixture containing a dispersion stabilizer, wherein the starting polyisocyanates are mixed or reacted with long chain compounds having molecular weights of 400 to about 10,000 before the reacting the starting polyisocyanates with water and/or the long chain compounds are added to the inert reaction medium and/or to the water.

Urea group-containing polyisocyanates modified with long chain compounds

The present invention relates to a process for the preparation of a modified 1,5-naphthylene diisocyanate containing urea and biuret groups comprising reacting

Process for the preparation of highly elastic plastics

The present invention is directed to a polyurethane reactive adhesive compound comprising:

Polyurethane reactive adhesive compounds containing finely dispersed

The present invention is directed to a reactive polyurethane mixture comprising:

Polyurethane-based one-component reactive adhesives

The present invention is directed to a polyurethane-based reactive adhesive comprising A) at least one polyisocyanate, B) at least one polyol, and C) at least one polyamine C which is a polyether amine containing at least two amino groups, at least one phenyl group and recurring polyoxyalkylene units.

Polyurethane-based reactive adhesives in which the isocyanate is

The invention relates to a process for improving the flowability and preventing the agglomeration of finely divided dimerized 2,4-toluene diisocyanate in which a precipitated silicas and/or pyrogenic silica having a hydrophobic surface is added to the finely divided dimerized 2,4-toluene diisocyanate. The invention also relates to the finely divided dimerized 2,4-toluene diisocyanate prepared by this process.

Process for improving the flowability of dimerized

The present invention relates to heat-curable reaction systems prepared by mixing (a) solid polyisocyanates (optionally deactivated) having melting points above 80.degree. C., (b) OH- and/or NH.sub.2 -terminated polyoxyalkylene polyethers that have molecular weights of 400 to 10,000 and are liquid at room temperature, (c) solid OH- and/or NH.sub.2 -terminated polyesters that have molecular weights of 400 to 20,000 and are solid at room temperature, and which are thoroughly distributed throughout the mixture but are not homogeneously miscible with the polyether, (d) optional low molecular weight chain-extending agents that contain OH and/or NH.sub.2 groups and have a molecular weight of 62 to 399, and (e) optional catalysts and other auxiliaries. The invention further relates to a method for preparing elastomers, coating compounds, sealing compounds, or adhesives by heat-curing the heat-curable systems.

Heat-curing polyether-polyester-polyurethane ureas

The present invention relates to the preparation of powdered heat-curable reaction mixtures in which melt suspension of (a) solid polyisocyanates having melting points above about 60.degree. C., (b) molten high molecular weight isocyanate-reactive compounds having molecular weights of from 400 to 10,000 that have melting or softening points of 50.degree. C. to 150.degree. C., and (c) optionally, solid or liquid low molecular weight chain-extending or crosslinking compounds having molecular weights of from 62 to 399, are added to an inert solvent containing an emulsifier, thereby forming powdered heat-curable reaction mixtures in which components (a), (b), and (c) remain in uncrossedlinked form. The invention further relates to the use of the heat-curing reaction mixtures for the preparation of high-quality polyurethane polyurea plastics.

Heat-curing reactive powders based on polyurethanes

This invention relates to a process for preparing polyurethane urea elastomers by reacting (a) compounds containing at least two isocyanate-reactive groups and having a molecular weight in the range from about 400 to about 10,000; (b) polyisocyanates; and (c) aromatic diamines corresponding to the formula ##STR1## wherein R.sup.1 and R.sup.2 are independently hydrogen or alkyl.

Process for the preparation of heat-stable polyurethane urea elastomers

The present invention is directed to a process for the production of molded polyurethane foams having a compact surface and a density of at least 250 kg/m.sup.3 by the in-mold foaming of a reaction mixture containing

Process for the production of molded polyurethane foams and the molded

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Cologne, Germany

Richard Kopp