Bayer Aktiengesellschaft

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Thomas Münzmay

Walter Meckel

Werner Rasshofer

Nusret Yuva

Uwe Klippert

Torsten Pohl

Martin Melchiors

Markus Mechtel

Hartmut Nefzger

Wolfgang Henning

Christoph Irle

Tillmann Hassel

Rolf Gertzmann

Thorsten Rische

Arno Nennemann

Peter Nussbaum

Alice Münzmay, Legal Representative

Manfred Schmidt

Christian Wamprecht

Harald Blum

Christoph Gürtler

Joachim Probst

Michael Mager

Bernd Quiring

Wilhelm Goyert

Andreas Ruckes

Steffen Hofacker

Meike Niesten

Ulrich Liman

Hans-Albert Ehlert

Horst Stepanski

Ulrich Freudenberg

Rolf Roschu

Eduard Mayer

Eduard Hansel

Thomas Stingl

Peter Fuhrmann

Karl-Heinz Dorner

Wilfried Kortmann, Deceased

Frank Kobor

Peter Selinger

Heinz-Dietmar Gewiss

Hartmut Ottensmann

Sandra Hackbarth

Heinz-Dietmar Gewiβ

Eberhard Biggeleben

Franz Lamla

Heinz-Dietmar Gewiß

Alice Münzmay

An aqueous preparation having soft-feel properties comprises: A) an aqueous polyurethane-polyurea dispersion, B) a hydroxy-functional polyacrylate copolymer dispersion and C) a polyisocyanate, which may have been hydrophilically modified. The copolymer dispersion B) further comprises a hydroxy-functional polycarbonate diol D) as a reactive diluent. The invention also concerns a process for producing coatings with such preparations, a substrate coated with such a preparation and the use of the preparation for the production of soft-feel coatings.

Aqueous preparations having soft-feel properties

The invention relates to aqueous formulations comprising silane-modified polymeric 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.

Silane-modified binder dispersions

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

The invention concerns aqueous secondary polymer dispersions based on special acrylate building blocks, a process for their production and their use as binders for the production of blister-free coatings.

Aqueous secondary polymer dispersions for the production of coatings

A process for preparing polyester-polyurethane resin dispersions comprising:

Aqueous PU dispersions with improved adhesion

The invention relates to new, aqueous secondary copolymer dispersions, to a process for preparing them and to their use for producing high-grade coatings, especially for wood. The dispersions comprise a copolymer (P) synthesized from a mixture of free-radically polymerizable monomers (M) comprising (M1) cycloaliphatic esters of acrylic and/or methylacrylic acid and also (M2) vinyl esters of aliphatic carboxylic acids.

Aqueous copolymer dispersions with improved blocking resistance

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

The invention provides aqueous preparations having soft-feel properties, foams obtainable by mechanically foaming these preparations, and soft-feel coatings based on the foams. The preparations comprise aqueous polyurethane-polyurea dispersions, hydroxy-functional, aqueous or water-dilutable binders, polyisocyanates which may have been hydrophilically modified, and foam stabilizers.

Aqueous foam coating with soft-feel effect

Aqueous, hydroxy-functional binder dispersions with a low solvent content and based on hydroxy-functional copolymers. The binders are prepared by subjecting one or more vinyl monomer mixtures containing OH-free (meth)acrylic esters and/or vinylaromatics, hydroxy-functional vinyl monomers and/or hydroxy-functional (meth)acrylic esters, and ionic and/or potentially ionic monomers capable of free-radical copolymerization, to free-radical polymerization in the presence of at least one compound containing lactone groups and subsequently dispersing the resultant copolymer before or after addition of a neutralizing agent in water. The binder combinations can be used in coating materials.

Low-solvent, OH-functional dispersions

The invention relates to water-dilutable, hydroxy-functional polyurethanes containing amide structural units, to a process for preparing them, to aqueous coating compositions prepared from them, and to their use for coating substrates.

Aqueous coating compositions based on polyurethane dispersions

The present invention relates to new hydrophilic polyurethane prepolymers and to their aqueous polyurethane-polyurea (PU) dispersions.

Hydrophilic polyurethane-polyurea dispersions

The invention relates to solvent-borne polyurethane resins with a high carbonate group content which are dilutable in water, to aqueous coating compositions prepared thereof, to a process for preparing them and to their use.

Polyurethane resin with high carbonate group content

Hydroxyfunctional compounds suitable for use in the polyisocyanate polyaddition process are obtained from polyurethane and/or polyurethane polyurea waste by decomposition with an alcohol and subsequent reaction of the alcoholysis products to reduce their content of low molecular weight, sterically unhindered aromatic amines. In this process, polyurethane and/or polyurethane polyurea waste is first treated with a low molecular weight diol or polyol at a temperature of from about 160 to 260.degree. C. The resultant alcoholysis product may then either be further heated at a temperature lower than that used in the first step within the ranger of from about 50 to 180.degree. C. or reacted with a dialkyl carbonate and/or 1,3-dicarbonyl compound.

Process for the production of hydroxyfunctional compounds from

Graft polymers of unsaturated monomers onto anionically modified polyureas are outstandingly suitable as binders in the coating of any desired substrates, for example leather.

Graft polymers of unsaturated monomers onto modified polyureas,

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Dormagen, Germany

Thomas Münzmay