Covestro Deutschland Ag

Bayer Materialscience Ag

Bayer Aktiengesellschaft

Covestro LLC

Bayer Materialscience, LLC

Covestro Intellectual Property Gmbh & Co. Kg

Allnex IP S.a.r.l.

Ppg, Inc.

Ppg Industries Ohio, Inc.

Bayer Intellectual Property Gmbh

Dorota Greszta-Franz

Hans-Josef Laas

Jan Weikard

Holger Mundstock

Wolfgang Fischer

Jörg Schmitz

Reinhard Halpaap

Frank Richter

Michael Grahl

Hartmut Nefzger

Dieter Mager

Nusret Yuva

Christian Wamprecht

Christoph Gürtler

Jan Mazanek

Jens Krause

Andreas Hecking

Jonathan T Martz

Hao Liu

Jun Deng

Sebastian Dörr

Michael Schelhaas

Stephen John Thomas

Mathias Matner

Hans-Ulrich Meier-Westhues

Alan Ekin

Deborah E Hayes

Christoph Eggert

Myron W Shaffer

Heino Müller

Christophe Detrembleur

Christophe Dètrembleur

Robert Maleika

Beate Baumbach

Matthias Wintermantel

Raul Pires

Florian Johannes Stempfle

Thomas Klimmasch

Abdullah Ekin

Carol L Kinney

Hongchao Li

Olaf Fleck

Berta Vega Sanchez

Florian Golling

James W Rawlins

Jürgen Meixner

Jinqi Li

Ling Yang

Wolfram Küttner

Christian Drumm

Reiner Witkowski

Irene Cristina Latorre Martinez

Junchao Zheng

Jianping Shen

Jan Morbach

Frank-Stefan Stern

Saskia Beuck

Ralph-Georg Born

Thomas Schuettler

Magdalena Fluegel

Yifeng Xu

Magdalena FLÜGEL

Hans Josef Laas

Helmut Müller

The present invention relates to two-component clear-coat systems comprising polyaspartic esters having primary amino groups and small amounts of dialkyl fumarates, to a process for the production thereof, and to the use thereof in the production of coatings for vehicle repair applications and to substrates coated therewith.

Two-component clear coat systems comprising polyaspartic acid ester

The present invention relates to a coating composition, a coating method and use of the composition, and a product coated with the coating composition. The coating composition comprises: (a) an isocyanate-reactive component comprising: (a1) at least one polyaspartic ester, and (a2) optionally a polyetheraspartic ester; (b) an isocyanate component comprising: (b1) at least one isocyanate prepolymer having an isocyanate group equivalent of 300 to 1100, and (b2) at least one isocyanate oligomer containing not less than two isocyanate groups, the weight ratio of the isocyanate prepolymer (b1) to the isocyanate oligomer (b2) being from 1:4 to 4:1; (c) a catalyst; and (d) optionally an additive; wherein the coating composition has a molar ratio of isocyanate groups to isocyanate-reactive groups of 1.5:1 to 8:1. The coating composition provided by the present invention has a long pot life, and the resulting coating has the advantages of fast drying and high hardness.

Coating 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 polyaspartic acid ester compositions which contain polyaspartic acid esters with primary amino groups and small amounts of fumaric acid dialkyl esters, to a method for preparing same and the use thereof as a reactive component for polyisocyanates in two-component polyurethane systems.

Polyaspartic acid ester compositions which contain polyaspartic acid esters with primary amino groups and small amounts of fumaric acid dialkyl esters

The present invention relates to a polyisocyanate composition comprising a formation component having isocyanate groups, the isocyanate groups having been reacted to an extent of &#x2265;98% with at least one CH-acidic compound, characterized in that the formation component consists to an extent of &#x2265;51% by weight of at least one polyisocyanate based on pentamethylene 1,5-diisocyanate having a content of isocyanurate trimer of &#x2264;60 area %, based on the total weight of the polyisocyanates based on pentamethylene 1,5-diisocyanate, and the remaining proportion up to 100% by weight of the total amount of polyisocyanates present in the formation component consists of at least one aliphatic or cycloaliphatic polyisocyanate. The present invention further provides a one-component system comprising the polyisocyanate composition, a process for producing a coating on a substrate, and the coatings obtainable from the one-component system.

Blocked polyisocyanate composition based on pentamethylene 1,5-diisocyanate

The present invention relates to aqueous, curable composition, comprising or consisting of

Aqueous, curable composition, comprising dispersed uretdione prepolymer, reactant and azolate

The present invention relates to a method for purifying polyaspartic acid ester compositions and to the provision of polyaspartic acid ester compositions that contain 0.01 to &#x3c;2% by weight fumaric acid dialkyl esters.

Polyaspartic acid ester compositions and method for purification

The present invention relates to a composition comprising 10 to less than 50 wt.-% of at least one oligomeric polyisocyanate a-1) based on hexamethylene diisocyanate and more than 50 to 90 wt.-% of at least one polyisocyanate a-2) based on isophorone diisocyanate, comprising monomeric isophorone diisocyanate and at least one oligomeric isophorone diisocyanate, and an isocyanate-reactive component selected from the group consisting of polyester polyol, polyether polyol and mixtures thereof. It has been shown that the above mentioned mixture of the specific isocyanate group containing components improves the thermal and mechanical properties of a cured composition. Thus prepared molded articles are particularly suitable for the preparation of spectacle lenses, inter alia due to these properties.

Method for preparing optical lenses

The present invention relates to a composition comprising 10 to 50 wt.-% of at least one polyisocyanate a-1) based on hexamethylene diisocyanate, comprising at least one oligomeric polyisocyanate based on hexamethylene diisocyanate and optionally monomeric hexamethylene diisocyanate and 50 to 90 wt.-% of at least one polyisocyanate a-2) based on isophorone diisocyanate, comprising at least one oligomeric polyisocyanate based on isophorone diisocyanate and optionally monomeric isophorone diisocyanate, with the proviso that at least one of the components a-1) and a-2) additionally comprises monomeric isocyanate of the named kind, as well as at least one sulfur-containing component. It has been shown that the above mentioned mixture of the specific isocyanate group containing components improves the thermal and mechanical properties of a cured composition. Thus prepared molded articles are particularly suitable for the preparation of spectacle lenses, inter alia due to these properties.

Lightfast polyurethane compositions

The present invention relates to adhesive formulations based on uretdione-group-comprising polyaddition compounds that are free of isocyanate groups and monomeric polyisocyanates, and to the use thereof for the production of adhesive bonds between substrates, in particular for the production of flexible film composites.

Adhesive formulations

The invention relates to a method for producing polyurethanes containing cyclic carbonate structures by reacting at least A) a composition containing a) one or more compounds of the general formula (I), said compounds containing isocyanate groups and cyclic carbonate structures, and b) &#x3c;=1 wt. %, based on the total mass of the composition A), of one or more monomer diisocyanates with aliphatically, cycloaliphatically, araliphatically, and/or aromatically bound isocyanate groups of the general formula (II), wherein R represents hydrogen or a saturated or unsaturated, linear or branched, aliphatic group with 1 to 7 carbon atoms, X represents a linear or branched organic group which comprises 1 to 36 carbon atoms and which can contain optionally ether, ester, and/or carbonate groups, n represents 0 or 1, and Y represents a linear or branched, aliphatic or cycloaliphatic group with 4 to 18 carbon atoms or an optionally substituted aromatic or aliphatic group with 6 to 18 carbon atoms, with B) an at least difunctional polyol with a number-average molecular weight Mn of 62 to 22000 g/mol, preferably 90 to 12000 g/mol, while maintaining an equivalent ratio of isocyanate groups to hydroxyl groups of 0.3:1 to 1.2:1. Furthermore, the invention relates to products which can be obtained using the method according to the invention. The invention additionally relates to the use of the products which can be obtained using the method according to the invention as a starting component in the production of crosslinkable binders, such as paints and raw materials for sealants or adhesives.

Binder with cyclic carbonate structures

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

The invention relates to the use of polyurethane sealing compounds for the production of light-fast compact or foamed polyurethane bodies or polyurethane urea bodies which have excellent mechanical and optical properties and especially a very high thermostability.

Polyurethane sealing compounds

Lightfast polyurethane composition

The present invention relates to a composition comprising 10 to 50 wt.-% of at least one polyisocyanate a-1) based on hexamethylene diisocyanat, comprising at least one oligomeric polyisocyanate based on hexamethylene diisocyanate and optionally monomeric hexamethylene diisocyanate and 50 to 90 wt.-% of at least one polyisocyanate a-2) based on isophorone diisocyanate, comprising at least one oligomeric polyisocyanate based on isophorone diisocyanate and optionally monomeric isophorone diisocyanate, with the proviso that at least one of the components a-1) and a-2) additionally comprises monomeric isocyanate of the named kind, as well as at least one sulfur-containing component. It has been shown that the above mentioned mixture of the specific isocyanate group containing components improves the thermal and mechanical properties of a cured composition. Thus prepared molded articles are particularly suitable for the preparation of spectacle lenses, inter alia due to these properties.

Growing community of inventors

Solingen, Germany

Dorota Greszta-Franz