Covestro Deutschland Ag

Bayer Aktiengesellschaft

Bayer Materialscience Ag

Covestro Intellectual Property Gmbh & Co. Kg

Other

E.i. Dupont De Nemours and Company

Bayer Corporation

Bayer Intellectual Property Gmbh

Covestro LLC

Coatings Foreign IP Co. LLC

Dieter Mager

Hans-Josef Laas

Dirk Achten

Mathias Matner

Reinhard Halpaap

Heiko Hocke

Josef Pedain

Martin Brahm

Karsten Danielmeier

Jan Weikard

Frank Richter

Dorota Greszta-Franz

Christian Wamprecht

Harald Blum

Robert John Barsotti

Christoph Gürtler

Lutz Schmalstieg

Jan Mazanek

Reinhold M Klipper

Aurel Wolf

Laura Ann Lewin

Markus Mechtel

Joachim Petzoldt

Manfred Schonfelder

Christoph Irle

Hans-Ulrich Meier-Westhues

Christoph Eggert

Myron W Shaffer

Jens Krause

James William O'Neil

Andreas Hecking

Heino Müller

Siegfried Oeckl

Thomas Klimmasch

Hans-Heribert Burgdorfer

Holger Casselmann

Jerome T Adams

Eberhard Arning

Harald Mertes

Carsten Koopmans

Jörg Tillack

Stefan Westhues

Florian Golling

Michael Ehlers

Elena Frick-Delaittre

James Lamonte Adams

Andreas Hauner

Limin Cheng

Friedrich P Schrader

Ronald-Karl Jerg

Yvonne Reimann

Qinglan Liu

Karl-Heinrich Wührer

André Fellhoelter

Reinhard Hertrampf

Jingchun Qian

Harald Leps

Eric Hoffman

Nadine Der

Andre Fellhölter

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 process for the preparation of polyisocyanates with dimer, trimer and/or allophanate and optionally urethane structure.

Process for the preparation of polyisocyanates with dimer, trimer and/or allophanate and optionally urethane structure

The present invention relates to novel polyisocyanurate plastics which are obtainable by catalytic trimerization of a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates. 'Low in monomeric diisocyanates' means that the polyisocyanate composition A) has a content of monomeric diisocyanates of at most 20% by weight. The invention further relates to the use of these polyisocyanurate plastics for production of coatings, films, semi-finished products and mouldings, and to a process for producing polyisocyanurate plastics comprising the following steps: (a) providing a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates, 'low in monomeric diisocyanates' meaning that the polyisocyanate composition A) has a content of monomeric diisocyanates of at most 20% by weight; (b) catalytically trimerizing the polyisocyanate composition A).

Polyisocyanurate polymers and process for the production of polyisocyanurate polymers

The invention relates to a method for producing a polyisocyanate polymer and to the polyisocyanate polymer obtainable from the method and to the use thereof as part of a two-stage method for producing a polyisocyanurate plastic, in particular for producing coatings, films, semi-finished products or molded parts containing such a polyisocyanurate plastic.

Method for producing a polyisocyanate polymer and a polyisocyanurate plastic

The present invention relates to novel modified polyisocyanurate plastics obtainable by catalytic trimerization of a composition A), wherein the composition A) comprises oligomeric modified polyisocyanates B) that are a reaction product of an oligomeric polyisocyanate B1) and at least one functionalizing reagent B2) reactive toward isocyanate groups, where the composition A) has a content of monomeric diisocyanates of not more than 20% by weight and where the at least one functionalizing reagent B2) reactive toward isocyanate groups has at least one functional group reactive toward isocyanate groups which is not an isocyanate group. The invention further relates to the process from which the polyisocyanurate plastics of the invention are obtainable, to the use of the polyisocyanurate plastics of the invention for production of coatings, films, semifinished products, composites and moldings, and to substrates coated with such a coating.

Hydrophilically modified polyisocyanurate plastic and process for production thereof

The invention relates to novel modified polyisocyanurate plastics, obtainable by means of catalytic trimerization of a composition (A), wherein the composition (A) contains oligomeric, modified polyisocyanates (B), which represent a reaction product from an oligomeric polyisocyanate (B1) and at least one functionalization reagent (B2) which is reactive to isocyanate groups, wherein the composition (A) comprises a content of monomeric diisocyanates of 20 wt % at maximum and wherein the at least one functionalization reagent (B2) which is reactive to isocyanate groups has at least one relative functional group which is reactive to isocyanate groups and which is not an isocyanate group. The invention further relates to the method by which the polyisocyanurate plastics according to the invention are obtainable, to the use of the polyisocyanurate plastics according to the invention for producing coatings, films, semi-finished products, composite materials and molded parts, and substrates coated by such a coating.

Hydrophobically modified polyisocyanurate plastic and method for production thereof

The present invention relates to process for producing polyisocyanurate plastics, comprising the following steps: a) providing a polyisocyanate composition A) which comprises oligomeric polyisocyanates and is low in monomeric diisocyanates, 'low in monomeric diisocyanates' meaning that the polyisocyanate composition A) has a content of monomeric diisocyanates of not more than 20% by weight, b) catalytically trimerizing the polyisocyanate composition A) using at least one tertiary organic phosphine catalyst B). The invention further relates to polyisocyanurate plastics obtainable by the process according to the invention, to coatings, films, semifinished products and mouldings comprising or consisting of the polyisocyanurate plastic according to the invention, and to the use of the polyisocyanurate plastics according to the invention for production of coatings, films, semifinished products and mouldings.

Process for producing polyisocyanurate plastics by means of phosphine catalysis

Polyisocyanurate polymer and process for the production of polyisocyanurate polymers

The invention relates to a process for producing polyisocyanurate plastics having a functionalized surface, comprising the following steps: a) providing a polyisocyanate composition A) containing monomeric and/or oligomeric polyisocyanates; b) catalytically trimerizing the polyisocyanate composition A) so as to obtain a bulk polyisocyanurate material as intermediate; c) surface functionalizing the intermediate by contacting at least one surface of the intermediate with at least one functionalizing reagent D); d) continuing the catalytic trimerization. The invention further relates to a polyisocyanurate plastic having a functionalized surface obtainable from the process of the invention.

Process for producing polyisocvanurate plastics having functionalized surfaces

The invention relates to a process for producing polyisocyanurate plastics, comprising the following steps: (a) providing a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates, where the isocyanurate structure content in the polyisocyanate composition A) is at least 50 mol %, based on the sum total of the oligomeric structures from the group consisting of uretdione, isocyanurate, allophanate, biuret, iminooxadiazinedione and oxadiazinetrione structure that are present in the polyisocyanate composition A); (b) catalytically trimerizing the polyisocyanate composition A), where (i) the catalytic trimerization is conducted at ambient temperatures of at least 80&#xb0; C.; (ii) the catalytic trimerization is conducted within less than 12 hours at least up to a degree of conversion at which only still not more than 20% of the isocyanate groups originally present in the polyisocyanate composition A) are present. Furthermore, the invention relates to a polyisocyanurate plastic obtainable by the process of the invention, to its use for producing coatings, films, semi-finished products and moldings.

Process for producing polyisocyanurate plastics

The invention relates to a process for producing solids made from polyisocyanurate plastics, comprising the following steps: (a) providing a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric polyisocyanates, where the isocyanurate structure content in the polyisocyanate composition A) is at least 50 mol %, based on the sum total of the oligomeric structures from the group consisting of uretdione, isocyanurate, allophanate, biuret, iminooxadiazinedione and oxadiazinetrione structure that are present in the polyisocyanate composition A); (b) catalytically trimerizing the polyisocyanate composition A), where (i) the catalytic trimerization is conducted at ambient temperatures of at least 80&#xb0; C.; (ii) the catalytic trimerization is conducted within less than 2 hours at least up to a conversion level at which only at most 20% of the isocyanate groups originally present in the polyisocyanate composition A) are present; (iii) the catalytic trimerization takes place under quasi-adiabatic conditions which are characterized in that the material temperature at least one juncture is at least 10&#xb0; C. above ambient temperature. The invention further relates to solids made from polyisocyanurate plastic, obtainable by the process of the invention.

Solids based on polyisocyanurate polymers produced under adiabatic conditions

The invention relates to a crystallization stable polyester prepolymers for producing HDI- and PDI-based, solvent free two component (2K)-polyurethane- and/or polyurea coating agents.

Crystallization stable polyester prepolymers

The invention relates to thioallophanates which contain silane groups and are of the general formula (I) in which R, Rand Rare identical or different radicals and are each a saturated or unsaturated, linear or branched, aliphatic or cycloaliphatic radical or an optionally substituted aromatic or araliphatic radical having up to 18 carbon atoms, where said radical may optionally contain up to 3 heteroatoms from the group of oxygen, sulphur and nitrogen, X is a linear or branched organic radical having at least 2 carbon atoms, Y is a linear or branched, aliphatic or cycloaliphatic radical or an araliphatic or aromatic radical having up to 18 carbon atoms, and n is an integer from 1 to 20, to a process for preparation thereof, and to the use thereof as starting components in the production of polyurethane plastics.

Thioallophanate polyisocyanates containing silane groups

The present invention relates to a process for producing polyisocyanates comprising reacting an isocyanate component in the presence of a mono- or multinuclear complex of titanium, zirconium and/or hafnium as catalyst to give polyisocyanates having a content of iminooxadiazinedione groups of &#x2265;20 mol % based on the total amount of isocyanurate and iminooxadiazinedione groups. The present invention also provides polyisocyanates obtainable by the process according to the invention and both polyurethanes and polyureas obtainable by reacting the polyisocyanates with at least one hydroxy-functional or amino-functional component respectively.

Iminooxadiazinedione polyisocyanates

The invention relates to novel solvent-free, monomer-depleted polyisocyanate mixtures, and to the use thereof for producing light-resistant and weather-resistant polyurethane bodies with high optical refraction and low optical dispersion.

Polyisocyanate mixtures

Growing community of inventors

Leverkusen, Germany

Dieter Mager