Bayer Aktiengesellschaft

Covestro Deutschland Ag

Bayer Materialscience, LLC

Bayer Aktiengesselschaft

Oswald Wilmes

Klaus Nachtkamp

Reinhard Halpaap

Lutz Schmalstieg

Frank Richter

Friedhelm Steffens

Josef Sanders

Tim Loddenkemper

Andreas Hecking

Jan Busch

Ralf Lemmerz

Dieter Arlt

Christian Wamprecht

Manfred Bock

Martin Brahm

Eberhard Konig

Carl Casser

Christian Rasp

Joachim Simon

Georg Ronge

Stefan Groth

Jurgen Dahmer

Dieter Schleenstein

Ulrich Walter

Konrad Fischer

Peter Maas

Pierre Woestenborghs

Theo Van Der Knaap

Harald Blum

Helmut Reiff

Jan Mazanek

Stephan Kirchmeyer

Ernst Kysela

Bernd Klinksiek

Lothar Kahl

Hans-Ulrich Meier-Westhues

Beate Baumbach

Raymond Audenaert

Rolf Roschu

Karin Naujoks

Eberhard Arning

Wolfhart Wieczorrek

Heinrich Steude

Ludwig Deibele

Wilfried Litz

Stephan Kabelac

Kurt-Manfred Küpper

Raf Reintjens

Mario Schneider

Randall Dearth

Uwe Werner

Hartmut Steenbeck

Almut Nagel

Jürgen Walloschek

Marie-Helene Walter

The invention relates to a novel method for producing polyisocyanurates comprising isocyanate groups, based on 2,4- and 2,6-toluylene diisocyanate (TDI) and to the use thereof in coating compositions.

Method for producing TDI-trimerisates with high purity

The invention relates to polyisocyanates comprising urethane groups, based on toluylene diisocyanate, to a method for their production, and to their use as the polyisocyanate component in one- and two-component polyurethane coatings.

Method for producing light-coloured TDI-polyisocyanates

The invention relates to a process for preparing polyisocyanates containing isocyanurate groups by trimerising cycloaliphatic diisocyanates using a catalyst solution comprising at least one quaternary ammonium hydroxide, characterized in that the catalyst solution is metered in such that the reaction temperature is &#x3e;90&#xb0; C. and &#x2266;140&#xb0; C.

Process for trimerising cycloaliphatic diisocyanates

A process for the removal of at least one volatile compound from a reactive or unreactive mixture of substances with the aid of at least one micro-evaporator, the micro-evaporator displaying channels for carrying the mixture of substances having a hydraulic diameter of 5 to 1000 &#x3bc;m and a specific evaporator surface area of at least 10m/m.

Process for the removal of volatile compounds from mixtures of substances using a micro-evaporator

The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and/or 2,6-diisocyanatotoluene (TDI). A catalytic trimerization is carried out in a mixture of from 20 to 80% by weight of a diisocyanate component containing at least 80% by weight of 2,4- and/or 2,6-diisocyanatotoluene, from 20 to 80% by weight of solvent, and 0&#x2013;20% by weight of an alcohol component, and also phenolic catalysts containing dialkylamino-methyl groups. In the course of ongoing trimerization, in one or more steps, additional monomeric 2,v4-diisocyanatotoluene is metered in.

Process for preparing low-monomer-content TDI trimers

The invention relates to a novel process for preparing low-monomer-content trimers based on 2,4- and 2,6-diisocyanatotoluene (TDI) and to the use thereof in coatings. The trimers are produced from a mixture of from 20 to 80% by weight of diisocyanate component containing at least 80% by weight of 2,4- and/or 2,6-diisocyanatotoluene and from 20 to 80% by weight of solvents and/or diluents and also phenolic catalysts containing dialkylaminomethyl groups.

This invention relates to polyurethane compositions which cross-link via a silane polycondensation and contain at least one alkoxysilane-functional polyurethane, at least one basic filler, at least one reaction product of an aminosilane with a maleic or fumaric ester, at least one organometallic compound and optionally additional auxiliary substances, to a process for their preparation, and to their use.

Condensation cross-linking polyurethane materials containing special aminosilanes, a method for the production thereof and their use

The present invention relates to new alkoxysilane-functional piperazinone derivatives, a process for their production, as well as their use as additives in sealants, adhesives, lacquers or coating agents.

Piperazinone derivatives with alkoxysilane groups

This invention relates to polyurethane prepolymers which comprise alkoxysilane terminal groups and which are based on special, very high molecular weight polyurethane prepolymers, to a method of producing them and to their use as binders for low-modulus sealing materials.

Polyurethane prepolymers having alkoxysilane end groups, method for the production thereof and their use for the production of sealants

The present invention relates to a process for the production of aqueous dispersions which form powder coatings at room temperature, have an average particle size of 0.1 to 10 .mu.m, contain polyols and blocked polyisocyanate crosslinking agents, and, after stoving, yield coatings with improved water and solvent resistance, in particular on metallic substrates.

Process for the production of aqueous stoving coating compositions

The present invention relates to aqueous polyurethane dispersions having a resin solids content of 20 to 60 wt %, a viscosity at 23.degree. C. of 10 to 20,000 mPa.s and a pH of 5.5 to 8.5, wherein the polyurethane has a weight average molecular weight of 5,000 to 500,000 and a urethane group content (calculated as --NHCO--O--, molecular weight=59) of 2.5 to 15 wt %, and is based on a polyisocyanate component containing 50 to 100 wt % of 1-methyl-2,4- and/or -2,6-diisocyanatocyclohexane. The present invention also relates to aqueous binder compositions containing these aqueous polyurethane dispersions and known crosslinking resins and to the use of the aqueous polyurethane dispersions and aqueous binder compositions as binders for glass fiber sizings.

Aqueous polyurethane dispersions based on 1-methyl-2,4-and/or

The present invention relates to a process for the solvent-free production of polyisocyanate addition products, which are suitable as dispersing agents for incorporating solids into aqueous coating compositions, wherein the polyisocyanate addition products have a maximum content of 1% by weight of isocyanate groups and a content of 30 to 95% by weight of ethylene oxide units (molecular weight=44) present in the polyether chains of monofunctional alcohols B), and are prepared by reacting

Dispersing agents for aqueous coatings compositions

The present invention relates to a process for the production of 1-amino-1-methyl-3(4)-aminomethylcyclohexane by

Process for the production of

The present invention relates to a process for the preparation of 1-amino-1-methyl-3(4)-aminomethyl cyclohexane (AMCA) by

Process for the preparation of 1-amino-1-methyl-3(4)-aminomethyl

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Koln, Germany

Oswald Wilmes