Basf Se Corporation

Bas Lohmeijer

Ekkehard Jahns

Rolf Dersch

Roelof Balk

Sebastian Roller

Uwe Dittrich

Manfred Dargatz

Jens Hartig

Arno Tuchbreiter

Maria Teresa Hechavarria Fonseca

Ulrich Tromsdorf

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 relates to a new process for preparing polyurethane-polyacrylate hybrid dispersions, and to the resulting dispersions and their use.

Process for preparing polyurethane-polyacrylate hybrid dispersions

A process for preparing stable aqueous dispersions of composite particles.

Process for preparing an aqueous composite-particle dispersion

A process for preparing aqueous dispersions of composite particles using nonpolymerizable silane compounds.

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Mannheim, Germany

Bas Lohmeijer