Covestro Deutschland Ag

Bayer Materialscience Ag

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Technology Services Gmbh

Bayer Intellectual Property Gmbh

Lanxess Deutschland Gmbh

Sascha Plug

Marc-Stephan Weiser

Sebastian Dörr

Sebastian Doerr

Johann Rechner

Hermann Uhr

Thomas Elsner

Meike Niesten

Arno Nennemann

Stefanie Eiden

Rafael Warsitz

Michael Traving

Daniel Gordon Duff

Daniel-Gordon Duff

Olaf Bork

Helmut Meyer

Jan Schönberger

Daniel Rudhardt

Werner Bäcker

Axel Eble

Jan Suetterlin

Claudine Stoye

Guido Naberfeld

Bastian Budde

Gerhard Langstein

Martin Weiss

Holger Egger

Stephan Bahnmuler

Julia Hitzbleck

Patrick Theato

Jeff Motley

Daniel Kessler

Stefan Bahnmüller

Johan Kijstra

Jeffrey Motley

Frank Ridder

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

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

The present invention relates to a viscoelastic element comprising a polyurethane foam, wherein the polyurethane foam can be obtained by reacting at least one isocyanate-functional prepolymer (VI) in the presence of a special polyurethane urea dispersion (V2), wherein the reaction of the prepolymer (VI) takes place in the presence of the polyurethane urea (V2) with a medium containing isocyanate-reactive groups. The invention also relates to a method for producing the viscoelastic element and to the use thereof.

Viscoelastic element based on a polyurethane foam

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 an adhesive producible from an aqueous polyurethaneurea dispersion comprising an amorphous polyurethaneurea (V1) obtainable by reacting at least The invention likewise provides an adhesive layer and a product including the adhesive, a process for producing the adhesive layer, a specific polyurethaneurea, and the use of the adhesive and a kit having components (V1) and (V2).

Adhesive based on a special polyurethaneurea with adjustable bonding force, and production and use thereof

The invention relates to a specific composition comprising A) isocyanate-functional prepolymers obtainable by reaction of A1) aliphatic diisocyanates with A2) di- to hexa-functional polyalkylene oxides having an ethylene oxide content of 50 to 100 mol %, based on the total amount of the oxyalkylene groups present, B) an aqueous polyurethane suspension, an aqueous polyacrylate suspension or aqueous silica sols, especially for production of hydrophilic, aliphatic polyurethane foams. The invention further provides a process for producing a hydrophilic, aliphatic polyurethane foam, based on the inventive composition, a polyurethane foam obtainable by the process and a wound dressing comprising the polyurethane foam.

Hydrophilic polyurethane foam with low volume swelling

The present invention concerns a system, comprising bacteriophages and particles comprising active agents, in which a first additional peptide is fused to proteins of the bacteriophage, the first additional peptide adheres to the surface of the particle and furthermore a second additional peptide is fused to proteins of the bacteriophage. The second additional peptide can adhere on substrate surfaces. The present invention furthermore concerns the use of the system for delayed release of active agents and also a method for production of the system. The present invention furthermore concerns a method for the selection of phage species from a combinatorial phage population.

System comprising bacteriophages and particles that contain active substances

A method for separating electrolyte-containing water from an organic phase by means of permeation on a hydrophobic separating means. The permeated organic solution is substantially depleted in water and the retained water is enriched with electrolytes.

Method for separating an organic phase from an electrolyte-containing aqueous and organic phase

Growing community of inventors

Leverkusen, Germany

Sascha Plug