Bayer Aktiengesellschaft

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Raul Pires

Robert Reyer

Martin Melchiors

Ulrich Freudenberg

Sandra Grosskopf

Christian Wamprecht

Rolf Gertzmann

Hans-Josef Laas

Christoph Gürtler

Walter Leitner

Frank Richter

Hao Liu

Martin Brahm

Dorota Greszta-Franz

Walter Lange

Karsten Danielmeier

Nusret Yuva

Jens Krause

Kai Laemmerhold

Wolfgang Arndt

Andreas Hecking

Jörg Büchner

Christoph Guertler

Henry Giera

Karl-Ludwig Noble

Florian Johannes Stempfle

Stephan Reiter

Florian Golling

Michaela Meiers

Daniel Thiel

Irene Cristina Latorre Martinez

Junchao Zheng

Klaus Jurkschat

Jianping Shen

Gerrit Bradtmöller

Markus Schürmann

Yaguang Ma

Ljuba Iovkova

Magdalena Fluegel

Burkhard Bl&uuml;mel

Hans-Josef Lass

Hans-Gerd Van Treek

Heinrich Dornbusch

Ralph-Georg Born

Laura Woods

Tuba Fatma Bayram

Sureshbabu Guduguntla

Tugrul Nalbantoglu

Magdalena FLÜGEL

The present invention relates to a polyether-modified polyisocyanate composition, which is obtainable by reacting a system containing the following components: a) a polyisocyanate having an isocyanate group functionality of 2-4.5; b) a polyoxyalkylene monoether alcohol; and c) optionally a catalyst; the polyoxyalkylene monoether alcohol has a number-average molecular weight of 900 g/mol-2000 g/mol and an oxypropylene group content of 45 wt. %-100 wt. %, relative to the total weight of the oxyalkylene group of the polyoxyalkylene monoether alcohol; the system has an equivalent ratio of isocyanate group to hydroxyl group of 5:1-110:1; the polyisocyanate composition has the following characteristics: i) the average isocyanate functionality is 1.8-4.1; ii) the isocyanate group content is 8-20 wt. %; and iii) the amount of the polyoxyalkylene monoether structure is greater than 10 wt. % and less than 50 wt. %, for characteristics ii) and iii), relative to the total weight of the polyisocyanate composition.

Polyether-modified polyisocyanate composition

The present invention relates to a process for producing polyaspartic ester compositions by reacting cyclic ethers bearing primary amino and/or primary aminoalkyl groups with fumaric and/or maleic esters, to the polyaspartic ester compositions thus obtainable, and to the use thereof in two-component coating compositions.

Binders containing secondary amine groups, based on cyclic ethers

The present invention relates to the use of specific inorganic Sn(IV) for the production of polyisocyanate polyaddition products from a) at least one aliphatic, cycloaliphatic, araliphatic and/or aromatic polyisocyanate, b) at least one NCO-reactive compound, c) at least one thermolatent inorganic tin-containing catalyst, d) optionally further catalysts and/or activators other than c), e) optionally fillers, pigments, additives, thickeners, antifoams and/or other auxiliary substances and additives, wherein the ratio of the weight of the tin from component c) and the weight of component a) is less than 3000 ppm when component a) is an aliphatic polyisocyanate and less than 95 ppm when component a) is an aromatic polyisocyanate, wherein as thermolatent catalysts cyclic tin compounds of formula I, II or III:  wherein n&#x3e;1, are used.

Use of tin catalysts for the production of polyurethane coatings

The invention relates to aqueous crosslinkable binder dispersions comprising hydroxy-functional copolymers based on ethylene glycol monoallyl ether, to a process for preparing them and to the use of the dispersions in coating materials.

Aqueous coating of hydroxy- and acid-functional copolymer and crosslinker

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

Catalysts for the accelerated curing of polyisocyanates with polyols, and to polyurethane systems comprising these. The catalysts are used in a two-component coating system based on polyurethanes including (a) polyisocyanates, (b) compounds having groups which are reactive with isocyanates, in water and optionally in the presence of organic solvents or solvent mixtures, (c) one or more compounds of elements of Group VB or Group VIB of the Periodic Table, in which the element in each case has an oxidation state of at least +4, and (d) optionally further additives and auxiliary agents. The coating systems are used in lacquers, paints and adhesives.

2-K PU systems

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

Crosslinkable binder dispersions

Polyisocyanate mixtures containing acylurea groups

The invention relates to a process for the preparation of nitrosobenzenes from aromatic amines by oxidation with hydrogen peroxide in the presence of sodium molybdate dihydrate and an inert organic solvent.

Process for the preparation of nitrosobenzenes

Growing community of inventors

Kö'ln, Germany

Raul Pires