Bayer Aktiengesellschaft

Bayer Materialscience Ag

Rolf Roschu

Christoph Irle

Wolfgang Kremer

Harald Blum

Erhard L&uuml;hmann

Josef Pedain

Christian Wamprecht

Werner Kubitza

Eberhard Arning

Hans J Laas

Hans-Josef Laas

Jan Weikard

Joachim Probst

Klaus Nachtkamp

Martin Brahm

Thomas Münzmay

Hans-Ulrich Meier-Westhues

Oswald Wilmes

Rolf Gertzmann

Ulrich Freudenberg

G&uuml;nther Ruf

Ferdinand Zollner

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 aqueous polyurethane dispersions based on fatty acid dialkanolamides, to a process for preparing them and to use as coating compositions.

Polyurethane dispersions based on fatty acid dialkanolamides

This invention relates to binders for aqueous coatings, to a process for the production thereof and to the use thereof for lacquers and coatings.

Polyurethane dispersions

Binder compositions and their use in aqueous coating and adhesive compositions

Coating compositions, a process for their production and their use for coating water-resistant substrates

Polyurethane-polyacrylate hybrid dispersions containing allophanate groups

The present invention relates to storage stable, aqueous polyurethane-polyacrylate hybrid dispersions, which are self crosslinkable at room temperature and contain A) 10 to 95 wt. %, of a polyurethane dispersion,

Self crosslinkable polyurethane-polyacrylate hybrid dispersions

The present invention relates to a process for the preparation of a coating by

Process for the preparation of coatings from moisture-curing coating

The present invention relates to aqueous polyurethane-urea dispersions which are film forming at temperatures of .ltoreq.20.degree. C. in the absence of film forming additives, dry at room temperature to yield films having a hardness according to DIN 53 157 (Konig pendulum hardness) of .gtoreq.100 seconds, in which the polyurethane-ureas have a urethane group content (calculated as --NH--CO--O--, molecular weight 59) of 7 to 20 wt. %, and a urea group content (calculated as -NH-CO-N, molecular weight 57) of 5 to 18 wt. %, and contain 15-70 wt. %, based on resin solids, of structural units prepared by incorporating 1-methyl-2,4- and/or -2,6-diisocyanatocyclohexane in the form of urethane and/or urea groups. The present invention also relates to a process for the production of these aqueous polyurethane-urea dispersions and to their use in coating compositions.

Aqueous polyurethane-ureas, a process for their production and their use

The invention relates to an aqueous binder composition having a long processing time (time within which the mixture can be processed without loss of quality) based on aqueous dispersions or solutions of binder mixtures, which contain at least one hydroxyl-group containing polyester dispersion or solution, at least one physically drying, aqueous polyurethane dispersion that is substantially free from hydroxyl or amino groups, and a polyisocyanate. The present invention also relates to the use of these binders in lacquers and coating compositions, in particular for coating rigid, non-flexible substrates.

Aqueous binder compositions having a long processing time and their use

Growing community of inventors

Willich, Germany

Rolf Roschu