Bayer Aktiengesellschaft

Bayer Materialscience Ag

Ulrich Freudenberg

Hans-Josef Laas

Reinhard Halpaap

Hans-Ulrich Meier-Westhues

Christian Wamprecht

Raul Pires

Robert Reyer

Martin Melchiors

Michael Grahl

Hans-Peter Klee

Harald Blum

Jan Weikard

Knud Reuter

Hanns-Peter Muller

Walter Schafer

Thomas Münzmay

Christoph Irle

Lothar Kahl

Rolf Gertzmann

Rolf Roschu

Helmut Greiving

Sandra Grosskopf

Hans-Gerd Van Treek

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 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

An aqueous binder dispersion that includes at least one copolymer (P) containing carboxylic acid and/or carboxylate groups. The copolymer (P) includes structural units of carboxyl-free (meth)acrylic esters with a cycloaliphatic structure, and at least 25 mol % of the carboxylic acid groups of the copolymer (P) in the dispersion being present in triethanolamine-neutralized form. The aqueous binder can be used in aqueous coating materials, which can be used to coat a substrate.

Aqueous binder dispersions as coating compositions

The present invention relates to novel polyesterpolyols with cyclic imide structure and to their use in coating compositions.

Water-dilutable polyesters with cyclic imide structure

The present invention relates to novel polyesterpolyols with cyclic imide and isocyanurate structure and to their use in coating compositions.

Water-dilutable polyesters with cyclic imide and isocyanurate structure

The invention relates to water-dilutable polyurethanes containing structural units derived from 3,4-epoxy-1-butene and also to aqueous dispersions comprising these polyurethanes, to a process for preparing them and to use as aqueous oxidatively drying and/or UV-crosslinking coating compositions.

Aqueous coating compositions based on epoxybutene polyethers

The invention relates to new high-functional polyaddition compounds which contain free isocyanate groups with an average isocyanate functionality of 2.1 to 8.0, a concentration of uretdione of 10 to 18 wt. %, a concentration of urethane of 10 to 20 wt. % and a concentration of ester groups &mdash;CO&mdash;O and/or carbonate groups &mdash;O&mdash;CO&mdash;O of 1 to 17 wt. %, a process for the preparation thereof and their use as starting components for the preparation of polyurethane plastics, in particular as cross-linking agents for heat-curable powder coatings.

Powder coating cross-linking agents of high functionality which contain uretdione groups and free isocyanate groups

Powder coating crosslinking agents containing uretdione groups and free isocyanate

The present invention relates to a process for the production of polyisocyanates containing uretdione groups by

Process for the production of light-colored uretdione polyisocyanates

The present invention relates to polyisocyanate-modified dicarboxylic acid derivatives obtainable by reacting organic polyisocyanates with excess quantities, based on the equivalent ratio of NCO/COOH groups, of dicarboxylic acid (poly)anhydrides containing free carboxyl groups and water. The present invention also relates to coating compositions, in particular powder coating compositions, containing these polyisocyanate-modified dicarboxylic acids as curing agents for resins containing epoxy groups.

Polyisocyanate-modified polycarboxylic acids and their use as

The present invention relates to a polyurethane powder coating composition containing

Polyurethane powder coating compositions which have a low stoving

The present invention relates to a powder coating composition for the production of matt coatings containing as binder

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Pulheim, Germany

Ulrich Freudenberg