Bayer Aktiengesellschaft

Bayer Materialscience Ag

Covestro Deutschland Ag

Dsm N.v.

Heino Müller

Josef Pedain

Reinhard Halpaap

Harald Blum

Joachim Petzoldt

Jan Mazanek

Dieter Mager

Sebastian Dörr

Christoph Irle

Holger Casselmann

Horst Gruttmann

Christoph Gürtler

Hanns-Peter Muller

Manfred Bock

Walter Uerdingen

Dorota Greszta-Franz

Manfred Schonfelder

Bert Brassat

Rolf Gertzmann

Christoph Thiebes

Bernhard Hess

Karl-Ludwig Noble

Ulrich Freudenberg

Olaf Fleck

Jürgen Meixner

Tanja Hebestreit

Heinz Schmidt

Hanns-Peter Müller

Heinz Eichner

Helmut Müller

The present invention relates to innovative single-component polyurethane systems based on water-soluble polyurethanes or their aqueous solutions, to a process for preparing them, and to the use.

Single-component polyurethane system comprising aqueous or water-soluble polyurethanes

The invention relates to an aqueous coating composition based on a combination of aqueous binders and crosslinker, to a process for preparing it and to use for single-coat or multi-coat paint systems, especially coatings having anti-stonechip properties.

Aqueous coating composition based on a binder mixture as base coat

Hydroxy-functional polyester-polyurethane dispersions comprising a reaction product of: (a) at least one, at least difunctional polyol component; (b) at least one ionizable compound having at least one acid group and at least one functional group capable of reacting with isocyanate groups, the at least one functional group selected from the group consisting of mono-, di-, and trihydroxycarboxylic acids, hydroxysulfonic acids, aminosulfonic acids, and aminocarboxylic acids; (c) at least one acid anhydride; and (d) at least one, at least difunctional polyisocyanate component; methods for preparing such dispersions; compositions containing such dispersions; and uses thereof.

Hydroxy-functional polyester-polyurethane dispersions, methods of preparing the same, compositions containing such dispersions and uses therefor

The present invention relates to the preparation of aqueous, solvent-free or low-solvent, storage-stable polyurethane crosslinker dispersions having pyrazole-blocked isocyanate groups, to coating compositions prepared from them and to their use in coatings.

Low-solvent or solvent-free crosslinker dispersions with pyrazole-blocked isocyanate groups

The present invention relates to the preparation of aqueous, cosolvent-free polyurethane dispersions with blocked isocyanate groups, to baking varnishes prepared from them, and to their use in coatings.

Preparation of a polyurethane dispersion with blocked isocyanate groups

The invention relates to new, aqueous, hydroxy-functional polyester dispersions containing urethane groups, to a process for preparing them, and to their use in combination with crosslinker resins for preparing paints, coatings and adhesives.

Aqueous hydroxy-functional polyester dispersions containing urethane groups

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. The blocked polyisocyanates are derived from polyisocyanates reacted with secondary amines and cationic, anionic and/or nonionic hydrophilizing agents such that they are incorporated into the polyisocyanate at a ratio of fromto, wherein the blocking agents correspond to the formula  

Blocked polyisocyanates

The present invention relates to aqueous self-crosslinking PU dispersions and to coatings prepared from them.

Self-crosslinking PU dispersions

The invention relates to aqueous and/or water-dilutable blocked polyisocyanates, their preparation and use in optionally self-crosslinking one-component systems.

The present invention relates to light fast, aqueous, strippable coating compositions containing A) 40 to 90 wt. %, based on resin solids of A) and B), of aqueous polyurethane-polyureas and B) 10 to 60 wt. %, based on resin solids of A) and B), of polymers prepared from radically polymerizable monomers, wherein the percentages of A) and B) add up to 100, based on the weight of resin solids of A) and B). The present invention relates also to substrates coated with these strippable coating compositions. In addition, the present invention relates to the use of the stripped coatings as recycled material by mechanically comminuting the stripped coatings, optionally after cleaning, and then either pressing them in heatable presses to form sheets, or extruding them in an extruder to form endless thermoplastic threads, and then processing the resulting threads by known granulating methods to form cylindrical, spherical, lenticular or rhombic granules. Finally, the present invention relates to the use of the resulting thermoplastic granules for the production of articles by known processes such as injection molding, blow molding, deep-drawing, slush molding or flat extrusion.

Strippable coating compositions

The present invention relates to a process for preparing a coated substrate by coating the substrate with an aqueous dispersion, which may be physically cured to form a light stable, elastic coating, containing

Process for preparing physically drying coatings from aqueous dispersions

The present invention relates to coating composition, which is suitable for preparing light fast coatings and contains a cosolvent-free, aqueous, anionic dispersion of polyurethane-ureas, the solids content of which contains the reaction product, present at least partially in salt form, of

Cosolvent-free aqueous, anionic polyurethane dispersions and their use

The present invention relates to a heat-crosslinkable water-based coating composition containing as binder

Water-based coating compositions and their use for the production of

The present invention relates to a polyisocyanate mixture which has blocked isocyanate groups and an average NCO-functionality, based on reversibly blocked isocyanate groups, of 2.0 to 2.6, and is the reaction product, converted into the salt form by the at least partial neutralization of the incorporated carboxyl groups, of

Water soluble or water dispersible polyisocyanate mixtures and their use

The use of molding compositions based on unsaturated polyester resins containing specific reactive groups and of sheet metals with a specially selected coating results in sheet metal/duroplast composite elements having excellent adhesion.

Growing community of inventors

Leverkusen, Germany

Heino Müller