Basf Se Corporation

Daimler Ag

Sebastian Roller

Rolf Dersch

Roelof Balk

Bernd Bruchmann

Reinhold Schwalm

Ekkehard Jahns

Bernhard Schuler

Ulrich Tromsdorf

Harm Wiese

Daniel Schoenfelder

Frederic Lucas

Uwe Dittrich

Rabie Al-Hellani

Karl Haeberle

Hermann Seyffer

Monika Haberecht

Robert Rupaner

Thomas Hielscher

Roland Baumstark

Hans-Juergen Denu

Alexander Kurek

Ivan Cabrera

Marc Schroeder

Christine Roesch

Alexandre Terrenoire

Peter Thuery

Uwe Burkhardt

Susanne Neumann

Sebastian Berger

Manfred Biehler

Bas Lohmeijer

Stefan Wahl

Nicolas Tissier

Katharina Andes

Hans-Jürgen Denu

Xavier Mollat Du Jourdin

Audrey Cosyns

Quirin Maximilian Kainz

Christina Haaf-Kleinhubbert

Felix Baah

Chintankumar Jayantilal Patel

Stefan Kirsch

Peter Thüry

Daniel SCHÖNFELDER

Bastiaan Lohmeijier

Michael Deger

Water-emulsifiable isocyanates with improved properties

The invention relates to aqueous polyurethane dispersions that are curable with UV radiation. The polyurethanes are chain-extended with aromatic, cycloaliphatic or aliphatic diamine compound and cross-linked with aliphatic triamine compound. The polyurethanes are useful dispersions for coating various substrates. The use of the invented dispersions results in high hardness, very good flexibility and good chemical resistance in both clear coats and pigmented coatings before and after UV curing combined with very good adhesion to different substrates.

Radiation curable coating composition based on chain-extended and cross-linked polyurethanes

Binder systems for high-gloss coatings and processes for producing them are provided, where the binder systems are prepared by preparing an aqueous polymer dispersion by radically initiated aqueous emulsion polymerization using defined first and second polymerization stages wherein the weight ratio of the sum of the total amounts of first polymerization stage monomers A1 to C1 (total monomer amount 1) to the sum of the total amounts of second polymerization stage monomers A2 to C2 (total monomer amount 2) is in the range 5:95 to 70:30, the amount of chain transfer agent in the second polymerization stage is selected such that the resulting overall polymer has a weight-average molecular weight of &#x2265;15 000 and &#x2264;50 000 g/mol, and the amount of the dispersing assistant is &#x2264;3.0 wt %, based on the sum of total monomer amount 1 and total monomer amount 2 (total monomer amount).

Binder system for high-gloss coatings

The present invention provides the use of aqueous polymer dispersions comprising (a) at least two monomers M1 having a glass transition temperature &#x2265;25&#xb0; C., (b) at least two monomers M2 having a glass transition temperature &#x3c;25&#xb0; C., and also further monomers M3, as binders in coating materials for improving the shade stability (color retention).

Use of aqueous polymer dispersion in coating agents for improving colour retention

The present invention relates to the use of aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase and having a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being &#x2212;30 to 0&#xb0; C. and that of the hard phase, as second stage, being 20 to 60&#xb0; C., comprising at least one monomer of the general formula I in which the variables have the following definitions:n=0 to 2,R1, R2, R3=independently of one another hydrogen or methyl group,X&#x2550;O or NH,Y&#x2550;H, alkali metal or NH,to coat metal sheets.

Use of multi-stage polymerizate dispersions to coat metal sheets

The present invention relates to aqueous hybrid binders comprising an aqueous polymer dispersion (PD), and also 0.01%-5% by weight of a photoinitiator, and also to aqueous alkyd systems comprising a water-soluble alkyd resin or an aqueous alkyd or polyurethane emulsion or dispersion, and also 0.01%-5% by weight of a photoinitiator, and to the use thereof in coating compositions, more particularly in coating materials.

Use of aqueous hybrid binders and alkyd systems for coating agents

The present invention relates to aqueous binder compositions obtainable by emulsion polymerization of

Low-VOC aqueous hybrid binders

Coating compositions containing an aqueous polymer dispersion having improved resistance toward chemicals. The aqueous polymer dispersion is prepared by polymerizing a first composition containing at least one ethylenically unsaturated group (monomers) by radical aqueous emulsion polymerization and then, in the presence of a product mixture from the previous polymerization, polymerizing a second composition containing at least one ethylenically unsaturated group (monomers) by radical aqueous emulsion polymerization. The coating compositions are such that the difference between a glass transition temperature of a polymer prepared from the first polymerization and a glass transition temperature of a polymer prepared from the second polymerization is at least 50&#xb0; C.

Use of aqueous polymer dispersions for improving resistance to chemical influences

The present invention provides aqueous emulsion polymers comprising

Aqueous emulsion polymers, their preparation and use

The present invention relates to an aqueous binder composition comprising:

Aqueous binder composition comprising oligomers

The present invention relates to the use of aqueous hybrid binders for producing coating compositions, more particularly in high-gloss coating materials (high-gloss paints), and also to a process for their preparation with low residual monomer content.

Use of aqueous hybrid binders for gloss paints

The present invention relates to aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase, and a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being &#x2212;30 to 0&#xb0; C. and that of the hard phase, as second stage, being 20 to 60&#xb0; C., comprising at least one monomer of the general formula I in which the variables have the following definitions:

Multistage polymer dispersions, processes for preparing them, and use thereof

The present invention relates to an aqueous polymer dispersion whose dispersed addition polymer P comprises, copolymerized in free-radically polymerized form, at least one polar monomer having a water solubility of greater than 50 g/liter (measured at 20&#xb0; C.), and obtainable by free-radically initiated aqueous emulsion polymerization, the polar monomer being metered to the reaction mixture during the polymerization process at a variable, i.e., nonconstant rate, for example in the sense of a rate gradient. The present invention further relates to processes for preparing these aqueous polymer dispersions, to their use as binders and/or in coatings, and also to coatings comprising the polymer dispersion of the invention.

Aqueous polymer dispersions, processes for preparing them, and their use

The present invention relates to a polymer dispersion which comprises a highly branched polycarbonate having unsaturated fatty acid groups. The invention further relates to highly branched polycarbonates having groups deriving from unsaturated fatty acids, to a process for preparing such highly branched polycarbonates, and to the use of these highly branched polycarbonates for improving the curing properties of coating compositions based on an aqueous acrylate dispersion.

Polymer dispersion which comprises a highly branched polycarbonate having unsaturated fatty acid groups

Growing community of inventors

Mannheim, Germany

Sebastian Roller