Covestro Deutschland Ag

Bayer Materialscience Ag

Bayer Aktiengesellschaft

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Intellectual Property Gmbh

Allnex IP S.a.r.l.

Frank Richter

Reinhard Halpaap

Andreas Hecking

Jan Weikard

Hans-Josef Laas

Wolfgang Fischer

Martin Brahm

Holger Mundstock

Friedhelm Steffens

Dorota Greszta-Franz

Stefan Groth

Oswald Wilmes

Tim Loddenkemper

Josef Pedain

Dieter Mager

Jürgen Köcher

Dirk Achten

Christoph Gürtler

Hartmut Nefzger

Manfred Bock

Michael Mager

Jörg Schmitz

Josef Sanders

Heike Heckroth

Jan Busch

Michael Sonntag

Siegfried R Waldvogel

Roland Wagner

Thomas Büsgen

Theodor Engbert

Christoph Eggert

Christophe Detrembleur

Carl-Gerd Dieris

Jens Krause

Sigurd Buchholz

Robert Maleika

Beate Baumbach

Matthias Wintermantel

Michael Grahl

Raul Pires

Christian Zwiener

Uwe Klippert

Michael Traving

Christoph Tomczyk

Harald Mertes

Stephan Reiter

Paul Heinz

Olaf Fleck

Ursula Tracht

Richard Meisenheimer

Wilfried Litz

Ian Teasdale

Christophe Dètrembleur

Christian F&uuml;ssel

Jurgen Weisser

Wolfgang Krohn

Ralph Weber

Martin Ehrig

Igor Pochorovski

Sebastian Herold

Armin Schymura

Klaus Jurkschat

Thomas Voigt

Frank-Stefan Stern

J&uuml;rgen K&ouml;cher

Eberhard Stelter

Martin Anstock

Jan Suetterlin

Andreas Gosch

Markus Schürmann

Joachim Simon

Gerrit Bradtmöller

Sven Siegemund

Ljuba Iovkova

Holger Rosellen

Jingchun Qian

Salvatore Manzelli

Cosimo Calandrelli

Stephan Reimer

Patrizio Orecchia

Joerg Kolle

Max Widemann

Richard Daniel Matthias Meisenheimer

Kathleen Fuchs

Elsa Karoline Schadlich

Sebastian Hoch

Reinhard Halpasp

Philip Bahke

Adrian Cosmin Dobre

Klaus Tidow

Christoph Ulbricht

Oliver Brueggemann

Jan-Patrick Bachmann

Susanne Kimeswenger

Florian Hartmann

Oliver Plavcan

Vinh Trieu

Marta Feroci

Gianpiero Forte

Achille Inesi

The invention relates to polycarbodiimides and to a process for their preparation using special catalysts.

Process for carbodiimidization

The invention relates to a method for producing an object from a construction material, the construction material comprising radically crosslinkable groups, NCO groups and groups having Zerewitinoff active H atoms, and the object being a three-dimensional object and/or a layer. During and/or after the production of the object, the construction material is heated to a temperature of &#x3e;50&#xb0; C., and the construction material comprises one or more cyclic tin compounds of formula F-I, F-II and/or F-III.

Dual cure method using Zerewitinoff-active H tin catalysts

The invention relates to a process for the preparation of polyisocyanates with dimer, trimer and/or allophanate and optionally urethane structure.

Process for the preparation of polyisocyanates with dimer, trimer and/or allophanate and optionally urethane structure

Provided is a method for preparing a solution B comprising at least one catalyst in at least one second solvent, comprising at least the following steps of (A) providing a solution A comprising the at least one catalyst in at least one first solvent, (B) treating the solution A from step (A) with activated carbon, (C) removing the activated carbon from the solution A, and (D) exchanging the at least one first solvent in solution A for at least one second solvent in order to obtain the solution B comprising the at least one catalyst in at least one second solvent, to a solution of at least one catalyst in at least one second solvent, obtainable by the method according to the invention, to the use of this solution for preparing a composition comprising the at least one catalyst, the at least one second solvent, at least one polyisocyanate and at least one NCO-reactive compound, to the use of this composition for producing a single-layered or multi-layered coating system and a corresponding process.

Method for preparing and processing catalyst solutions

The invention relates to a two-component system containing a component A) comprising at least one NCO-reactive connection, and a component B) comprising at least one polyisocyanate, characterised in that the component A) contains &#x2265;400 to &#x2264;9500 wt. ppm water, in relation to the total weight of the component A), and the component A) and/or the component B) contains at least one thermolatent, inorganic, tin-containing catalyst. The invention also relates to a method for producing a coating on a substrate, coatings that can be obtained with the method, the use of the component A) or B) in the two-component system, and substrates coated with the coating, in particular coated vehicle bodies or vehicle parts.

Thermolatently catalysed two-component system

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 polycyclic diiminooxadiazinones of the formula I and/or of the formula II, in which in each case

Polycyclic diiminooxadiazinones

The invention relates to a method for producing the isomers 1,3- and/or 1,4-xylylene diisocyanates by reacting the corresponding 1,3- and/or 1,4-xylylene diamines with phosgene in the gaseous phase.

Method for producing xylylene diisocyanates in the gaseous phase

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 modifying isocyanates where at least one organic isocyanate with NCO functionality &#x3e;1 is oligomerized in the presence of at least one catalyst, characterized in that the catalyst comprises, as isocyanatemodification catalysts, at least one cyclic ammonium salt having a cation of the formula (I) (formula I), where the N-containing substituents Rand Rare mutually independently identical or different aliphatic, cycloaliphatic, aromatic or araliphatic C, to Cmoieties which are saturated or unsaturated, linear or branched, optionally substituted and/or interrupted by heteroatoms from the group of oxygen, sulphur and nitrogen, and Y is a substituted or unsubstituted, linear or branched Cto Csegment optionally interrupted by heteroatoms from the group of oxygen, sulphur and nitrogen or else intempted by aromatic rings, and optionally containing other rings. The invention further relates to the use of such a catalyst.

Process for modifying isocyanates with use of cyclic ammonium salts as catalyst

The invention relates to a method for modifying isocyanates, wherein at least one organic monomer isocyanate having an NCO functionality &#x3e;1 is oligomerised in the presence of at least one catalyst, said method being characterised in that the catalyst comprises at least one specific compound having an NPN sequence selected from compounds of formula I (formula I), and/or from compounds of formula II (formula II) where HX represents an acid with a pKa value &#x2265;2, Xrepresents the anion of an acid with a pKa value &#x2265;2, and n represents an integer or fractional number between 0 and 20, wherein Y represents R(R)N&#x2014; and/or one or more substituents of the structure of formula III (formula III) and wherein Rto Rindependently represent identical or different substituents selected from C-Calkyl-, C-Ccycloalkyl- and C-Caryl groups, or wherein Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand Rindependently represent identical or different substituents selected from C-Calkylene-, C-Ccycloalkylene-, C-Carylene groups, and can form a 3- to 12-membered ring with the N atom joined to the P atom. The invention also relates to the use of a catalyst of this type.

Method for isocyanate modification using catalysts with an NPN sequence

The present invention relates to a method for producing polyisocyanates comprising iminooxadiazinedione groups, wherein at least one monomeric di- and/or tri-isocyanate is oligomerized in the presence of at least one catalyst and succinonitrile. The invention relates further to a reaction system for producing polyisocyanates comprising iminooxadiazinedione groups, and to the use of succinonitrile in the production of polyisocyanates comprising iminooxadiazinedione groups by catalyzed modification of monomeric di- and/or tri-isocyanates.

Use of succinonitrile in the production of polyisocyanates comprising iminooxadiazinedione groups

The Invention relates to a process for modifying isocyanates, in which at least one monomeric organic isocyanate having an NCO functionality&#x3e;1 is oligomerized in the presence of at least one spirocyclic ammonium salt having a cation of the formula I as catalysts for the isocyanate modification, where substituents X and Y in the N positions are identical or different, substituted or unsubstituted C2-C20-alkylene chains optionally interrupted by heteroatoms (O, N, S) and by aromatic rings. The invention further relates to the use of such a catalyst.

Process for isocyanate modification using spirocyclic ammonium salts as catalyst

A process for continuous preparation of oligomeric or polymeric isocyanates by catalytic modification of monomeric di- and/or triisocyanates, characterized in that at least one isocyanate component A and at least one catalyst component B are combined continuously in a reaction apparatus and conducted through the reaction apparatus as a reaction mixture, the residence time distribution being characterized according to the dispersion model by Bo (Bodenstein number) above 40, preferably above 60 and most preferably above 80.

Process for continuous isocyanate modification

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Leverkusen, Germany

Frank Richter