Covestro Deutschland Ag

Bayer Materialscience Ag

Bayer Intellectual Property Gmbh

Adhesys Medical Gmbh

Covestro LLC

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Cropscience Gmbh

Medical Adhesive Revolution Gmbh

Sebastian Dörr

Manfred Schmidt

Meike Niesten

Marc-Stephan Weiser

Heike Heckroth

Sascha Plug

Harald Blum

Thomas Feller

Thomas Michaelis

Friedrich-Karl Bruder

Dennis Hönel

Dirk Achten

Christian Wamprecht

Hans-Josef Laas

Reinhard Halpaap

Hartmut Nefzger

Jörg Hofmann

Burkhard Köhler

Thomas Fäcke

Thomas Rölle

Jan Mazanek

Hans Georg Grablowitz

Evgeny Avtomonov

Michael Mager

Dorota Greszta-Franz

Mathias Matner

Joachim Petzoldt

Harald Kraus

Alan Ekin

Rolf Gertzmann

Joachim Wagner

Christoph Eggert

Nusret Yuva

Thorsten Rische

Peter Reichert

Steffen Hofacker

Heino Müller

Beate Baumbach

Jörg Büchner

Dennis Hansson

Thomas Roelle

Jürgen Köcher

Arno Nennemann

Dirk Dijkstra

Jörg Tillack

Hans-Otto Werling

Pantea Nazaran

Yuliya Berezkin

Jan Schönberger

Burkhard Fugmann

Werner Jenninger

Chen Jin

Holger Casselmann

Jürgen Meixner

Sophie Viala

Olaf Fleck

Robrecht Froyman

Nicolas Stöckel

Melita Dietze

Stephanie Vogel

Rainer Trinks

Evelyn Peiffer

Yingdan Zhu

Daniel Rudhardt

Tanja Hebestreit

Nicolas Stoeckel

Christos Karafilidis

Kristine Fraatz

Ute Flemm

Henricus Peerlings

Winnie Wei

Michael Heckes

Claudine Stoye

Jan Suetterlin

Hans-Robert Hehnen

Oliver Pyrlik

Maria Zhou

Saskia Beuck

Ralph-Georg Born

Maria Almato

Daniel Hentschel

Helmut Müller

Marc Christian Leimenstoll

Eric Seewald

Dennis HÖNEL

Paula Cristina Alves Rodrigues

Jeffrey Motley

Shijie Zhou

Wolfram Kuettner

Thomas Bregger

The invention relates to a process for producing a composite material for wound dressings, comprising the following steps: (I) providing a first film, having a first film surface and a second film surface running virtually parallel to the first film surface: (II) mixing an NCO-terminated polyurethane prepolymer with at least water to give a polyurethane prepolymer/water mixture, (III) applying the polyurethane prepolymer/water mixture to at least one part of the first film surface to form a layer, the layer having a first layer surface which is in contact with the first film via at least one part of the first film surface, and having a second layer surface which runs virtually parallel to the first layer surface; (IV) covering at least one part of the second layer surface with a further film, wherein the bond strength between the first film and the layer and also between the layer and the further film is greater in each case than the tensile strain at break of the layer. The invention further relates to a composite material produced by the process of the invention and also to a wound dressing comprising such a composite material and also to the use thereof in a wound dressing for improving the absorption of wound secretion and the distribution of secretion in the wound dressing.

Method for producing an adhesive-free wound contact composite material

The present invention relates to a composition, a process for its production, and use thereof. The composition comprises water, a polyurethane polymer and a water-soluble salt of a chelating agent, said polyurethane polymer having a hydrolyzable group, said polyurethane polymer is a reaction product comprising the following reactive components: Component A) an isocyanate, Component B) a compound having an isocyanate-reactive group, wherein said compound comprises at least one group that can be converted to said hydrolyzable group, optionally Component C) an emulsifier, optionally Component D) a solvent, and optionally Component E) a reactive diluent; wherein said water-soluble salt of the chelating agent is present in an amount of from 0.04 to 1.8% by weight, relative to 100% by weight of said polyurethane polymer.

Composition, its production and use thereof

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

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

The invention provides a process for producing polyurethane foams, in which compositions comprising

Process for producing elastic and tear-resistant polyurethane foams and uses

The invention relates to a contact adhesive product, comprising a substrate and a polyurethane resin, which can be obtained by reacting at least A) an aliphatic polyisocyanate component having an average isocyanate functionality of &#x2265;1.8 and &#x2264;2.6, B) a polymeric polyether polyol component, C) an amino-functional chain extender component having at least 2 isocyanate-reactive amino groups, containing at least one amino-functional connection C1), which has no ionic or ionogenic group and/or an amino-functional compound C2), which has ionic or ionogenic groups, D) possibly further hydrophilic components which are different from C2), E) possibly hydroxy-functional compounds having a molecular weight of 62 to 399 mol/g, F) possibly further polymeric polyols which are different from B), G) a compound, which has precisely one isocyanate-reactive group, or a compound, which has more than one isocyanate-reactive group, wherein only one of the isocyanate-reactive groups reacts under the selected reaction conditions with the isocyanate groups present in the reaction mixture, and H) possibly an aliphatic polyisocyanate component having an average isocyanate functionality of &#x3e;2.6 and &#x2264;4, wherein the components B) and F) together contain &#x2264;30 wt % on component F), based on the total mass of the components B) and F). The invention further relates to a method for producing the contact adhesive product, to a special polyurethane resin, and to a contact adhesive comprising said polyurethane resin.

Contact adhesive product based on polyurethane resin, production thereof, and corresponding contact adhesive

The present invention relates to a method that includes providing a formulation having an isocyanate-functional prepolymer and a curing component comprising an amino-functional aspartic ester of the general formula (I) applying the formulation to a cell tissue; and curing the formulation such that the loss of blood (haemostatic) or tissue fluids is staunched or leaks in cell tissues are sealed.

Medical adhesives for stopping heavy bleeding and sealing leakages

The invention relates to a method for coating textiles and/or leather, comprising applying at least one polyurethane urea dissolved in a solvent or solvent mixture, wherein the solvent consists of one or more monohydroxy-functional alcohols, or a solvent mixture consisting of organic solvents, containing &#x3e;80 wt. % of at least one monohydroxy-functional alcohol in relation to the total mass of the solvent mixture is used, and wherein the polyurethane urea is formed by: a) at least one araliphatic, aliphatic and/or cycloaliphatic diisocyanate; b) at least one polyether polyol having a number average molecular weight M&#x2265;400 and &#x2264;6000 g/mol and an average hydroxyl functionality of &#x2265;1.5 and &#x2264;4; c) at least one amino-functional compound having at least two isocyanate reactive amino groups; and optionally other components. The invention also relates to a textile or leather coating produced using this method and a dissolved polyurethane urea, and to the use of the polyurethane urea for coating substrates and for producing free films.

Polyurethane urea solutions for textile coatings

The present invention relates to novel aqueous polyurethane dispersions produced using at least two poly(tetramethylene glycol) polyether polyols with different average molar masses and at least two different polyisocyanate components.

Poly(THF)-based polyurethane dispersions

An aqueous polyurethane dispersion comprises a polyurethane polymer obtainable by the reaction of an isocyanate-functional polyurethane prepolymer A) with an isocyanate-reactive component B), wherein the isocyanate-functional prepolymer A) is obtainable by the reaction of a mixture comprising: a polyol component comprising a polyester polyol obtainable by the reaction of a mixture comprising an aliphatic dicarboxylic acid and at least one diol selected from the group consisting of linear aliphatic diols and a branched aliphatic diols; and a polyisocyanate component comprising &#x2267;50 weight-%, based on the total weight of polyisocyanates, of dicyclohexylmethane diisocyanate. The isocyanate-reactive component B) comprises a compound comprising sulfonate groups which is employed in an amount of &#x2267;3.5 weight-% to &#x2266;10 weight-%, based on the total weight of the polyol component, the polyisocyanate component and the isocyanate-reactive component B). The invention also concerns the use of such an aqueous polyurethane dispersion for coatings, a method of manufacturing a coated substrate and to a coated substrate.

Aqueous polyurethane dispersion for waterproof breathable coatings

The present invention relates to a nail varnish composition which contains a plasticizer A) and a film-forming agent B), characterized in that the plasticizer A) comprises at least two carbonate structural units of formula (I) and has an average molecular weight of &#x2267;450 g/mol, determined by gel permeation chromatography against a polystyrene standard in tetrahydrofurane at 23&#xb0; according to DIN 55672-1, and a hydroxyl functionality of &#x2267;1.5 and &#x2266;6.  The invention further relates to a coating which can be obtained from the nail varnish composition according to the invention, to a substrate coated with such a coating, and to a cosmetic method for coating finger and/or toe nails, according to which method a nail varnish composition according to the invention is applied to finger and/or toe nails. The invention also relates to the use of compounds as plasticizers in nail varnish compositions which compounds contain specific carbonate structural units.

Plasticizers for nail varnish

The present invention relates to an isocyanate-free multi-component system, in particular for medical uses such as foamable wound coverings, with at least two separate components, wherein the first component comprises at least one alkoxysilane-terminated prepolymer and the second component comprises an aqueous component, wherein the aqueous component is a polyurethane dispersion.

Fast-setting alkoxysilane spray foams

The invention relates to a method for producing hydrophilic, aliphatic polyurethane foams. The invention further relates to special compositions for producing polyurethane foams either using the method according to the invention or using the polyurethane foams obtained from the compositions according to the invention, and to the use of the polyurethane foams as a wound dressing, cosmetic item, or incontinence product.

Hydrophilic, aliphatic polyurethane foams

Growing community of inventors

Düsseldorf, Germany

Sebastian Dörr