Bayer Aktiengesellschaft

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Ge Bayer Silicones Gmbh & Co. Kg

Covestro Deutschland Ag

Bayer Technology Services Gmbh

Markus Mechtel

Michael Mager

Thomas Klimmasch

Wolfgang Fischer

Frank Herre

Lutz Schmalstieg

Nusret Yuva

Christian Wamprecht

Reinhard Halpaap

Wolfgang Podszun

Karl-Heinz K&auml;sler

Hans-Josef Laas

Christoph Gürtler

Thomas Münzmay

Arno Nennemann

Stephan Kirchmeyer

Harald Kraus

Steffen Hofacker

Meike Niesten

Stefan Groth

Karl-Heinz Kaesler

Jan Weikard

Jan Mazanek

Bernd Klinksiek

Dieter Mager

Wieland Hovestadt

Hans-Jürgen Nolte

Michael Sonntag

Harry Krumma

Philip E Yeske

Rolf Gertzmann

Christoph Thiebes

Holger Mundstock

Robert Horst Bloodworth

Olaf Halle

Jorg-Dietrich Jentsch

Jörg Tillack

Claus Kobusch

Michael Ehlers

Lars Obendorf

Wolfgang Frank

Christoph Gurtler

Eckhard Wendt

Alice Münzmay, Legal Representative

Matthias Steiner

Wolfgang P&uuml;tz

Reinhard Hertrampf

Thomas Bäker

The present invention relates to aqueous binder dispersions based on silane-modified polymeric binders and inorganic nanoparticles, a process for the preparation thereof and the use thereof for the production of high quality coatings, in particular clear lacquers.

Binders containing nanoparticles

The invention relates to aqueous formulations comprising organic binders having a siloxane content and inorganic nanoparticles, a process for the preparation thereof and the use thereof for the preparation of aqueous coating compositions.

Siloxane-containing binder dispersions

Processes for preparing siloxane-modified polyisocyanates, the processes comprising: providing a polyisocyanate reactant; and reacting the polyisocyanate reactant with a hydroxyl-containing siloxane having a number-average molecular weight of 200 to 3000 g/mol and an average OH functionality of greater than or equal to 1.8, and corresponding to the general formula (I): wherein X represents an aliphatic, unbranched or branched Cto Cradical optionally containing ether groups; R represents a hydroxyl-functional radical; Rrepresents a hydrogen or an optionally heteroatom-containing Cto Chydrocarbon radical; and n is 1 to 40; siloxane-modified polyisocyanates prepared thereby, and uses therefor.

Polysiloxane-modified polyisocyanates, processes for preparing the same, and polyurethanes containing the same

The present invention relates to innovative, nanoparticle-modified polyisocyanates, a process for their preparation and to their use in coating compositions and adhesives. The process comprises the steps of 1) reacting A) polyisocyanates with B) alkoxysilanes, and subsequently 2) incorporating by dispersion inorganic particles, optionally surface modified, having an average particle size of less than 200 nm as determined by means of dynamic light scattering in dispersion, where the alkoxysilanes are according to formula (I)Q-Z&#x2014;SiXY&#x2003;&#x2003;(I)in which Q is an isocyanate-reactive group, X is a hydrolysable group, Y is identical or different alkyl groups, Z is a C-Calkylene group and a is an integer from 1 to 3.

Nanoparticle-modified polyisocyanates

The present invention relates to innovative polyisocyanate mixtures comprising cycloaliphatic structural elements and containing exclusively linear-aliphatically attached free isocyanate groups, to a process for preparing them and to their use as a starting component in the production of polyurethane plastics, more particularly as a crosslinker component in polyurethane coating materials and coatings.

Polyisocyanate mixtures comprising cycloaliphatic structural elements

The present invention relates to novel coating compositions comprising polyisocyanates, aliphatic oligocarbonate polyols, oligoester polyols and polyacrylate polyols, to a process for their production and to their use in the production of coatings.

Coating compositions

A process for the preparation of dual-cure hardeners, coating systems which contain these hardeners, and the use of these coating systems, as well as substrates coated with these coating agents. The dual-cure hardeners are prepared by reacting at least one diisocyanate or polyisocyanate A with the product B of the reaction of B1 acrylic acid, methacrylic acid and/or dimeric acrylic acid with B2 glycidyl methacrylate and/or glycidyl acrylate, wherein B contains less than 0.2 wt. % of epoxide groups.

Hardeners

The present invention relates to aqueous copolymer dispersions containing The present invention also relates to a process for preparing these aqueous copolymer dispersions and to their use in coating compositions.

Aqueous copolymer dispersions with reactive diluent

High-solids binder combinations comprising polyisocyanates, special lactone-based polyols and polyacrylate-polyols, a process for preparing such binders, and their use for producing coatings. The lactone-based polyols include &#x3b5;-caprolactone-based polyols having an average hydroxy functionality &#x2267;2 and a number-average molecular weight of from 119 to 2000 g/mol. The polyacrylate resins are prepared by copolymerizing optionally functional polybutadienes, aromatic monomers, hydroxyalkyl esters of acrylic or methacrylic acid having primary hydroxyl groups, aliphatic esters of acrylic or methacrylic acid and Cto Cmonoalcohols, &#x3b1;,&#x3b2;-unsaturated C&#x2013;Cmonocarboxylic or dicarboxylic acids or of one or more monoesters of maleic acid or fumaric acid and Cto Cmonoalchols.

High-solids binder combinations for scratch-resistant topcoats

Blocked polyisocyanates and one-component stoving systems containing these blocked polyisocyanates, and the preparation thereof and their use for the preparation of lacquers, paints, adhesives and elastomers, wherein blocked polyisocyanates are prepared by reacting polyisocyanates with secondary amines corresponding to the formula wherein wherein R&#x2013;Rcan be identical or different and independently of one another denote C&#x2013;-alkyl and/or C&#x2013;C-cycloalkyl, Rdenotes hydrogen or C&#x2013;-alkyl or C&#x2013;C-cycloalkyl.

Blocked polyisocyanates

The invention relates to soluble organic-inorganic compositions comprising linear and cyclic hydrosiloxanes, to a novel process for preparing them and to their use as coating materials.

Polyfunctional carbosiloxanes with linear and cyclic components

Two-component polyurethane binders as primers

Process for producing sol-gel condensates based on polyfunctional organosilanes

The present invention relates to inorganic coating compositions based on cyclic carbosiloxanes, inorganic polycondensates and &agr;,&ohgr;-functional linear oligosiloxanes, and also to a process for production thereof and to the use thereof and to a non-stick layer so obtained.

Inorganic coating composition, a method for producing same and the use thereof

Antifouling agents, their production and use, and antifouling coating produced therefrom

Growing community of inventors

Bergisch Gladbach, Germany

Markus Mechtel