Bayer Aktiengesellschaft

Bayer Materialscience Ag

Covestro Deutschland Ag

Other

Bayer Intellectual Property Gmbh

Covestro Intellectual Property Gmbh & Co. Kg

Christoph Irle

Harald Blum

Rolf Roschu

Joachim Petzoldt

Wolfgang Kremer

Jan Weikard

Joachim Probst

Rolf Gertzmann

Erhard L&uuml;hmann

Christian Wamprecht

Hao Liu

Joachim Wolff

Thomas Münzmay

Stefan Groth

Robert Maleika

Stefan Sommer

Heino M&uuml;ller

Erhard Luehmann

Hongchao Li

Michael Ehlers

Horst Clemens

Antonio Midolo

Ruiwen Wu

Josef Pedain

Hans-Josef Laas

Richard Kopp

Jan Mazanek

Martin Melchiors

Bernd Klinksiek

Martin Brahm

Dieter Mager

Hans-Ulrich Meier-Westhues

Thorsten Rische

Nusret Yuva

Meike Niesten

Thomas Feller

Heino Müller

Ulrich Freudenberg

Arno Nennemann

Karin Naujoks

Horst Gruttmann

Claus Kobusch

Na Xu

Ulrich Biskup

Lars Obendorf

Marc Claudius Schrinner

Ling Yang

Maria Almato Guiteras

Limin Cheng

Eva Tejada

Erhard Lühmann

Hanns-Peter Müller

Maria Almató Guiteras

Qinglan Liu

G&uuml;nther Ruf

Federico Comajuan

Amadeo Vicente

Alice Münzmay

Hao Lui

The present invention relates to a two-component system comprising a component A) comprising at least one polymeric polyol which has an OH content of &#x2264;4.5 wt %, based on the total solids content of the polymeric polyol, and a component B) comprising at least one polyisocyanate which has a number average isocyanate group functionality of &#x2265;4.0 to &#x2264;10.0, based on the total solids content of the polyisocyanate, a fraction of &#x2264;25 wt %, based on the total solids content of the polyisocyanate, of oligomers containing isocyanate groups and having a number-average molecular weight of &#x2264;780 g/mol, and an isocyanurate group fraction of &#x2265;5 mol % to &#x2264;70 mol %, based on the total amount of isocyanurate groups and allophanate groups in the polyisocyanate. The invention further relates to a method for producing a coating on a substrate, to the coating obtainable by this method, and to the coated substrate.

Two-component system for elastic coatings

The invention relates to a polyisocyanate which is based on tolylene 2,4-diisocyanate, tolylene 2,6-diisocyanate or a mixture of tolylene 2,4- and 2,6-diisocyanate and has isocyanurate groups, wherein the polyisocyanate has

TDI based low-viscosity polyisocyanates with isocyanurate groups

The invention relates to a polyisocyanate mixture comprising at least one polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups and at least one polyurethane which is based on tolylene diisocyanate and has isocyanate groups, wherein the polyisocyanate mixture has a) a solids content of from &#x2265;51 to &#x2264;90% by weight, based on the total weight of the polyisocyanate mixture and b) a content of monomeric tolylene diisocyanate of &#x2264;0.9% by weight, based on the total weight of the polyisocyanate mixture, and the polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups has a polydispersity D of from &#x2265;1 to &#x2264;1.5, based on the total weight of the polyisocyanurate which is based on tolylene diisocyanate and has isocyanate groups, where the polydispersity D is the ratio of weight average and number average molecular weight of the polyisocyanurate and the weight average and number average molecular weight is in each case determined by means of gel permeation chromatography using a polystyrene standard and tetrahydrofuran as eluent in accordance with DIN 55672-1:2016-03.

TDI based polyisocyanate mixture with a high solids content

The present invention relates to the use of an aqueous preparation for the coating of wood surfaces, characterized in that the aqueous preparation comprises: a hydroxyl-functional polyurethane-polyacrylate dispersion, apolyurethane dispersion, an at least partially hydrophilicized polyisocyanate and &#x2267;0 weight-% to &#x2266;10 weight-% of a matting agent, wherein the combined hydroxyl content of the hydroxyl-functional polyacrylate dispersion and the polyurethane dispersion is &#x2267;1% to &#x2266;12%. The invention further relates to a method of producing a coated wood surface, comprising the step of coating a wood surface with such an aqueous preparation and to a coated wood surface comprising an aqueous preparation whose use has been recited in the context of the use according to the invention.

Use of an aqueous preparation for the coating of wood surfaces to achieve a natural-touch effect

The present invention describes the preparation of an aqueous polyurethane dispersion which is cured by radiation, and its use as binder.

Process for producing hard coating systems based on aqueous polyurethane dispersions

The invention relates to aqueous formulations comprising silane-modified polymeric binders having a siloxane content and inorganic nanoparticles, a process for the preparation thereof and the use thereof for the preparation of aqueous coating compositions.

Silane-modified binder dispersions

Solvent-containing formulations including NCO-containing prepolymers based on TDI isocyanurate polyisocyanates and diphenylmethane diisocyanates where some prepolymers are prepared using a polyetherdiol containing ethylene oxide blocks and having an ethylene oxide content of from 2 to 18% by weight, based on all the alkylene oxide units. The formulation have an NCO content of 1% to 7% by weight, a solids content of 20% to 70% by weight, a monomeric TDI content of less than 0.2% by weight and a monomeric methylenediphenyl diisocyanate content of less than 2% by weight. The solvent-containing formulations can be prepared in organic solvents by reacting at least one of A) a TDI component comprising TDI isocyanurate polyisocyanates and B) an MDI component comprising diphenylmethane diisocyanates with C) a polyetherdiol. The solvent-containing formulations can be used in moisture-curing coating compositions, adhesive bonds and/or seals with substrates.

Moisture-curing prepolymers

Aqueous UV-hardenable dispersions are provided, as well as their use for the production of coating agents, in particular coatings for ligneous substrates. The dispersions comprise the reaction product of a) one or more polyisocyanates of which at least one polyisocyanate is an oligomeric polyisocyanate of hexamethylene diisocyanate with urethane, biuret, iminooxadiazindione and/or isocyanurate structural units, b) one or more monohydroxy-functional compounds containing (meth)acryloyl groups, c) at least one component c1), which has a hydrophilising effect on the basis of incorporated (potentially) ionic groups and comprises at least one further isocyanate-reactive group and/or at least one component c2) which contains non-ionically hydrophilically acting groups and comprises at least one further isocyanate-reactive group, d) one or more difunctional and/or polyfunctional amines or hydroxyamines as chain extender, and e) optionally other monomeric, oligomeric and/or polymeric substances, which may optionally also contain further unsaturated groups.

UV-hardenable dispersions based on polyisocyanates

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

A process for the continuous production of an aqueous polyurethane dispersion based on at least one aliphatic and/or aromatic polyisocyanate is described, which is characterised by the following steps:

Process for the continuous production of an aqueous polyurethane dispersion

Aqueous coating compositions based on polyurethane dispersions which cure under the influence of high-energy radiation, to a process for preparing them and to their use. The coating compositions contain a polyisocyanate, a polyurethane containing free-radically polymerizable groups, and an initiator which is capable of initiating a free-radical polymerization.

Radiation-curing coating compositions

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

Emulsion polymers and their use as peelable coatings

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

The invention relates to aqueous reactive 2-component binder combinations for aqueous reactive filler compositions, processes for the preparation of aqueous reactive filler compositions based on aqueous reactive 2-component binder combinations and the use of such filler compositions.

Aqueous reactive putty (I)

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Dormagen, Germany

Christoph Irle