Covestro Deutschland Ag

Bayer Aktiengesellschaft

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Materialscience Ag

Bayer Materialscience, LLC

Bayer Intellectual Property Gmbh

Reinhard Albers

Michael Loof

Heinz Pudleiner

Ralf Dujardin

Klaus Lorenz

Frank Otto

Stephanie Vogel

Torsten Heinemann

Patrick Klasen

Manfred Schmidt

Hartmut Nefzger

Jörg Hofmann

Joachim Simon

Christian Hahn

Hartwin Hobler

Joachim Wagner

Hans-Georg Pirkl

Marcel Schornstein

Don S Wardius

Hans-Detlef Arntz

Erhard Michels

Paul Heinz

Keith J Headley

Stephan Schleiermacher

Johannes Van De Braak

Wolfgang Kreiss

Rolf Roers

Lutz Brassat

Ernst Felske

Marina Reithmeier

Elena Frick-Delaittre

Dirk Steinmeister

Stephan Moers

Hans-Guido Wirtz

Andreas Pielasch

G&uuml;nther Eberz

Michael Baecker

Frank Grimberg

Johannes Braak

Ulrich Leyrer

Ali-Kasim Anwar

Zhihong Gu

Christina Krasemann-Sharma

Atsushi Urano

Rita Fr&ouml;de

Martin Marazita

Suk Sangjo

Sairam Potaraju

Elena Rojo-Wiechel

Zhao Shihu

Andreas Lyding

Bernd Rothe

Dieter Seidel

Marion Frommont

Sabine Dippe

Hubert Ehbing

Thomas Heidelmann

Horst-Heinrich Schneider

Atsushi Uranu

Urano Atsushi

The present invention relates to a process for direct production of mixtures of short-chain high-functionality polyoxyalkylene polyols and long-chain low-functionality polyoxyalkylene polyols. The short-chain high-functionality polyoxyalkylene polyol component is obtained by alkylene oxide addition onto high-functionality H-functional starter compounds while the long-chain low-functionality polyoxyalkylene polyol component is correspondingly obtained by alkylene oxide addition onto low-functionality H-functional starter compounds. The invention further relates to the resulting polyoxyalkylene polyols and to the reaction thereof to produce polyurethanes.

Process for producing polyoxyalkylene-polyol mixtures

The present invention relates to an insulation body based a hard, fine-cell and open-cell polyurethane/polyisocyanurate foam with a barrier film, and a method for producing same.

Polyurethane-based insulation body and method for producing same

A method for improving the production of a cased device (), wherein a casing component () of the cased device () is produced, which production of the casing component () comprises injecting a polymer mixture () for creating a solid foam interior into a cavity, which cavity is formed by the casing component (), which injecting is done by an injection apparatus () and which injecting is based on injection control data () input to the injection apparatus (), wherein during the injection of the polymer mixture () into the cavity forming data () for describing the injection process is recorded, wherein after injecting the polymer mixture () into the cavity at least one image of the casing component () is recorded and wherein based on the forming data (), the at least one image and the injection control data () a prediction model () for generating new injection control data () for inputting to the injection apparatus () is updated.

Method and system for improving the production of a cased device

The invention relates to a process used to produce open-cell and extremely fine-cell PUR/PIR rigid foams, said process using a polyol formulation comprising a specific isocyanate-reactive component, a catalyst component having zerewitinoff-active hydrogens and a cell-opener component.

Polyurethane foam and process for producing same

The present invention relates to a method for producing a PUR/PIR foam body, comprising the steps of providing a mold adapted for applying an underpressure to the interior of the mold; introducing a reaction mixture comprising an isocyanate-reactive component A and an isocyanate B into the mold, and applying an underpressure to the interior of the mold, so the underpressure acts on the introduced reaction mixture. The underpressure is applied to the interior of the mold no later than the reaction mixture has started to set in the mold, and the isocyanate index of the reaction mixture is &#x2265;300.

Method for the vacuum-assisted production of a PUR/PIR foam body

The present invention is related to a method for the production of polyurethane foam, comprising the steps of:

Vacuum-supported method for the production of polyurethane foam

The invention relates to a method for producing foamed molded bodies comprising the steps of

Method for producing foamed molded bodies

The present invention relates to a process for producing a rigid polyurethane-polyisocyanurate foam C, comprising the step of reacting (i) an isocyanate-terminated prepolymer B with (ii) an activator component A comprising at least one trimerization catalyst A1 and at least one blowing agent A3 in a reaction mixture to form a foam, characterized in that&#x2014;there is used an isocyanate-terminated prepolymer B obtained from a reaction of an isocyanate B1 having a mean isocyanate functionality of from &#x2267;2.3 to &#x2266;2.9 with a polyol component B2, and&#x2014;the activator component A comprises water as the blowing agent A3 in an amount of from &#x2267;5 wt. % to &#x2266;50 wt. %,&#x2014;the isocyanate index in the reaction mixture is in a range of from &#x2267;400 to &#x2267;500, and&#x2014;the isocyanate content of the prepolymer B is in a range of from &#x2267;21 wt. % to &#x2266;30 wt. %, based on the total mass of the prepolymer B, and&#x2014;wherein in the reaction of the prepolymer B and the activator component A a conversion contribution to polyisocyanurate of &#x2266;75% is achieved. Rigid foams C so produced have good flame retarding properties while at the same time having good insulating properties and stability properties. The present invention relates further to a rigid polyisocyanurate foam C produced by the process according to the invention, to the use of such a rigid polyisocyanurate foam C in the production of heat-insulating structural components, and to a heat-insulating structural component comprising such a rigid polyurethane-polyisocyanurate foam.

Method for producing a hard polyurethane-polyisocyanurate foamed material

A cavity between inner and outer walls of an open-box-shaped mold is filled with a polyurethane reaction mixture, containing an isocyanate and an emulsion of an isocyanate-reactive composition with three polyols and a blowing agent, which is cured to a polyurethane containing polymer. The inner and outer wall are a fixed distance from one another and each wall comprises a bottom and sides. The mixture is fed through an inlet in the bottom of the outer wall. Before filling the cavity, the mold is turned downwards so that the mixture foams upwards, filling the cavity. The three polyols are polyether polyol obtained by adding an epoxy to carbohydrates or difunctional or higher-functional alcohols; polyether polyol obtained by adding an epoxy to an aromatic amine; and polyester polyether polyol obtained by adding an epoxy to the esterification product of an aromatic dicarboxylic acid derivative and a difunctional or higher-functional alcohol.

Insulation moulding and method for its manufacture

An isocyanate-terminated prepolymer C having an NCO content of from &#x2267;26% by mass to &#x2266;31.0% by mass is obtainable from the reaction of an isocyanate composition A having a viscosity at 25&#xb0; C. of from &#x2267;60 mPas to &#x2266;800 mPas, comprising from &#x2267;25% by mass to &#x2266;60% by mass MDI and from &#x2267;40% by mass to &#x2266;75% by mass pMDI, wherein the sum of the amounts of those components is &#x2266;100% by mass, with a bifunctional polyester ether polyol B having an OH number of &#x2267;200 mg(KOH)/g and &#x2266;500 mg(KOH)/g, obtained from the reaction of a dicarboxylic acid/dicarboxylic acid derivative with at least one polyol and with an epoxide, wherein the polyester ether polyol B is used in amounts of from &#x2267;1.5% by mass to &#x2266;6.0% by mass, based on the sum of the masses of A and B. The invention further provides a PUR/PIR polymer produced from the prepolymer C, its use and composite elements based thereon.

Lightly modified prepolymers and uses thereof

The present invention provides a process for the preparation of polyols based on fatty acid esters and starter compounds having Zerewitinoff-active hydrogen atoms and the use thereof for the preparation of polyurethane materials.

Process for the preparation of polyether-ester polyols

The present invention relates to a process for the preparation of polyether ester polyols starting from fatty acid esters and starter compounds having Zerewitinoff-active hydrogen atoms, and to their use in the production of solid or foamed polyurethane materials.

Process for the preparation of polyether ester polyols

The invention provides moulded items made from thermoplastic polyurethanes (TPUs), in particular medical articles such as central venous catheters which contain a homogeneous distribution of antibiotic substances, a process for the preparation thereof and preparation of the active substance-containing TPUs.

Moulded bodies made of thermoplastic polyurethane containing an active substance

The invention relates to aromatic copolyesters comprising antimicrobially active substances in homogeneous distribution, processes for their preparation and their use in medical articles.

Aromatic copolyester containing active ingredients

Molding compositions comprising polyether block amide and homogeneously distributed antimicrobially active substances are disclosed. The compositions are suitable for molding a variety of articles, notably medical articles.

Polyether block amides containing active substances

Growing community of inventors

Leverkusen, Germany

Reinhard Albers