Covestro Deutschland Ag

Bayer Materialscience Ag

Bayer Aktiengesellschaft

Bayer Intellectual Property Gmbh

Covestro Intellectual Property Gmbh & Co. Kg

Robert Maleika

Frank Buckel

Dirk Achten

Hans-Josef Laas

Jan Weikard

Hao Liu

Josef Sanders

Christoph Irle

Stefan Groth

Gunther Stollwerck

Hongchao Li

Reinhard Halpaap

Wolfgang Ebert

Heinz Pudleiner

Thomas Fäcke

Frank Richter

Leslaw Mleczko

Klaus Meyer

Dorota Greszta-Franz

Mathias Matner

Wolfgang Nising

Christoph Eggert

Holger Mundstock

Siegfried Anders

Peter Capellen

Matthias Wintermantel

Arno Nennemann

Thomas Klimmasch

Rüdiger Gorny

Martin Döbler

Herman Van Der Vegt

Melanie Möthrath

Ralph Weber

Zhe Zhu

Lutz Böhnke

Ruiwen Wu

Antonio Midolo

Martin Ehrig

Birgit Meyer Zu Berstenhorst

Marc Schreiber

Georg Lamp

Irene Cristina Latorre Martinez

Michiel De Haan

Wilfred Teunissen

Ruijing Guo

Armin Schymura

Sean Gao

Enrico Orselli

Frank-Stefan Stern

Reiner Meyer

Sascha Frischke

Philippe Jeantin

Thomas Schuettler

Andreas Bürgel

Elsa Karoline Schadlich

Sebastian Hoch

Fredie Langenstueck

Walter Koehler

Oliver Pyrlik

Jingmei Liu

Irene Christina Latorre Martinez

Carmen Imöhl

Yuefeng Wang

Fredie LANGENSTÜCK

Hao Lui

Elsa Karoline SCHÄDLICH

The invention relates to a multiple-chamber container (*) for storing and mixing a multi-component liquid coating or adhesive system (M), comprising a first chamber () for a first mixing component (B) and at least one other chamber () for another mixing component (H), the first chamber () and the at least one other chamber () being separated by at least one separating wall () in liquid-tight fashion and the separating wall () comprising a pierceable separating layer (). The multiple-chamber container further comprises at least one piercing element () for piercing the pierceable separating layer () in such a way that the first and the one other mixing component (B, H) mix in the first or the at least one other chamber (). The multiple-chamber container (*) is characterized in that the at least one other chamber () is coaxial to the first chamber (), the separating layer () being partially formed in the separating wall (). The piercing element () is hollow, in particular hollow-cylindrical, and has at least two longitudinally offset openings () for introducing either the first or the other mixing component (B, H) into the chamber () of the respective other mixing component (H, B).

Multiple-chamber container for storing and mixing a multi-component liquid coating or adhesive system

The present invention relates to a process for producing translucent polyurethane and polyisocyanurate foams by reaction of a component A comprising A1 at least one polyol reactive with the component B; A2 optionally at least one amine; A3 water and optionally formic acid; A4 at least one foam stabilizer; A5 optionally auxiliary and/or additive substances; A6 optionally at least one flame retardant; A7 at least one catalyst; and a component B comprising B1 at least one aliphatic or cycloaliphatic polyisocyanate component or a combination thereof; and B2 optionally at least one hydrophilized isocyanate; and B3 less than 20 parts by weight of an aromatic polyisocyanate component, wherein the parts by weight of B3 are based on the sum of the parts by weight of B1 to B3 normalized to 100 parts by weight, characterized in that the reaction of the component A with the component B is carried out at an isocyanate index of at least 150, wherein the obtained translucent polyurethane and polyisocyanurate foams have a light transmission according to EN ISO 13468-2:2006 of at least 10% and a haze of at least 70%, determined according to ASTM D1003-13, in each case measured at a layer thickness of 20 mm. The present invention further relates to polyurethane and polyisocyanurate foams obtained by the process and to the use thereof as a construction element, as a wall element, as a floor element, in buildings, in vehicles or lamps.

Translucent polyurethane or polyisocyanurate foams

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 specific translucent, preferably lightfast, polyurethane foams which have a high light transmission and are therefore suitable e.g. for producing translucent polyurethane foams or multilayer composite elements, for example for producing structural components, more particularly as roof elements such as strip lights and light domes, as wall elements such as a panel, in vehicles, in lamps, as furniture, as partitions and in sanitary facilities.

Translucent polyurethane foams

The invention relates to a process for producing an optical casting comprising at least one volume-holographic optical element by means of at least one casting operation, the process comprising the following steps:

Method for producing an optical cast body having a holographic optical element, and optical cast body

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 invention relates to a method for producing the isomers 1,3- and/or 1,4-xylylene diisocyanates by reacting the corresponding 1,3- and/or 1,4-xylylene diamines with phosgene in the gaseous phase.

Method for producing xylylene diisocyanates in the gaseous phase

The invention relates to a composition for producing transparent polythiourethane bodies containing or consisting of A) a polyisocyanate component containing at least one polyisocyanate with a functionality of isocyanate groups of at least 2 per molecule, B) a thiol component containing at least one polythiol with a functionality of thiol groups of at least two per molecule, in addition to optionally C) auxiliary agents and additives, the ratio of isocyanate groups to groups reactive in relation to isocyanates being 0.5:1 to 2.0:1. The composition is characterized in that the polyisocyanate of the polyisocyanate component A) is produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines. The invention also relates to a method for producing transparent polythiourethane bodies by the conversion of a composition of this type, to polythiourethane bodies produced in this manner and to the use of polyisocyanates, produced by a gas-phase phosgenation of aliphatic, cycloaliphatic, aromatic or araliphatic polyamines, for producing transparent polythiourethane bodies.

Composition for producing transparent polythiourethane bodies

The present invention relates to a multi-layer product, the first layer being a UV-cured protective layer which contains SiOnanoparticles, and the second layer containing a thermoplastic substrate. In addition, the invention relates to the composition of the UV-curable first layer, a process for the production of the multi-layer products and products, such as e.g. glazing products, which contain the named multi-layer products.

UV-curing protective layer for thermoplastic substrates

Compositions, suitable for coating surfaces, methods for their preparation and for coating surfaces therewith, where said compositions comprise: (a) 100,000 parts by weight of a primer composition comprising a binder material (a1), a primer solvent (a2) and a UV absorber (a3), wherein the primer composition is suitable as an adhesion-promoting agent between a thermoplastic substrate and a siloxane-based top coat; (b) 0 to 900,000 parts by weight of a solvent, and (c) 1 to 3000 parts by weight of a compound according to the general formula (I): wherein X represents a moiety selected from the group consisting &#x2014;OR, &#x2014;OCHCHOR, &#x2014;OCHCH(OH)CHORand &#x2014;OCH(R)COOR, wherein Rrepresents a branched or unbranched C-Calkyl, C-Calkenyl, C-Caryl or &#x2014;CO&#x2014;C-Calkyl, Rrepresents H or a branched or unbranched C-Calkyl, and Rrepresents a C-Calkyl, a C-Calkenyl or a C-Ccycloalkyl, and wherein the composition has a viscosity of 40 s to 140 s measured in accordance with DIN EN ISO 2431 at 23&#xb0; C. and with a 2 mm cup.

UV protective compositions, processes for preparing such compositions, methods of coating substrates therewith and multi-layer articles formed thereby

The invention relates to multilayer products comprising a layer (A) and a layer (B), wherein layer (A) contains polyalkyl(alkyl)acrylate and has a layer thickness &#x3c;25 [mu]m, and layer (B) contains polycarbonate. The total thickness of layers (A) and (B) is 20 to 500 mm.

Coextruded films with low temperature impact resistance

A multilayer product characterized by its improved weatherability and mechanical properties is disclosed. The product contains a layer A containing a member selected from the group consisting of transparent thermoplastic material and a lacquer, the member containing at least one UV absorber, a layer B containing a transparent thermoplastic material and containing at least one colorant, and a layer C containing a transparent thermoplastic material. Also disclosed is a process for the preparation of the inventive multilayer product.

Multi-layer weather-resistant, coloured panel

A multi-layered product in the form of sheet, film or a three dimensional molded article is disclosed. The product comprised a first layer (A) having a thickness of 1 &#x3bc;m to 2 mm containing polyalkyl (meth)acrylate and 0.01 to 20 percent relative to the weight of said first layer of a UV stabilizer and a second layer (B) that contains polycarbonate. The stabilizer conforms to formula (I) wherein X denotes OR; OCHCHOR; OCHCH(OH)CHORor OCH(R)COOR, Ris branched or unbranched C-Calkyl, C-Calkenyl, C-Caryl or &#x2014;CO&#x2014;C-Calkyl, Ris H or branched or unbranched C-Calkyl, and Ris C-Calkyl; C-Calkenyl or C-Ccycloalky. The product is characterized by its optical transparency and resistance to yellowing and is most suitable for glazing applications.

UV-stabilized polycarbonate moldings

A device for testing the scratch resistance of a surface of a test specimen by means of a gas stream charged with solid particles, comprising:

Device for testing the scratch resistance of surfaces

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Düsseldorf, Germany

Robert Maleika