Bayer Aktiengesellschaft

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Bayer Materialscience Ag

Covestro Intellectual Property Gmbh & Co. Kg

Lanxess International Sa

Bayer Healthcare Aktiengesellschaft

Rainer Bellinghausen

Dirk Achten

Hans-Dieter Block

Rainer Weber

Hans-Heinrich Moretto

Alfons Grunenberg

Peter Serno

Christian Wamprecht

Friedhelm Steffens

Thomas König

Hanns-Ingolf Paul

Rainer Neumann

Heiko Herold

Mathias Matner

Norbert Lonhoff

Andreas Ohm

Bernhard Spreckelmeyer

Uwe Arndt

Michael Batz

Jan-Olav Henck

Hans Rinkes

Heinrich Helker

Frieder Heydenreich

Rolf Feller

Tim Loddenkemper

Alfred Eitel

John Lovegrove

Peter Reichert

Adam Gronowski

Michael Merkel

Steffen K&uuml;hling

Tony Van Osselaer

Jörg Kirchhoff

Rolf Lanze

Stephan Schubert

Ralph Weber

Jorg Kirchhoff

Andreas Jupke

Hans-Georg Nieder-Vahrenholz

Hartwig Kempkes

Anna-Marie Zorn

Joerg Stein

Faisal Shafiq

Pascal Scherpian

Eimer Vollers

Paul Strehlow

Elmer Vollers

Martin Hecker

Claudia Houben

John George Lovegrove

Elmer Volters

John George Arnold Lovegrove

The present invention relates to a process for the treatment of thermoplastic polyurethane, to the treated thermoplastic polyurethane and to the use thereof.

Method for producing thermoplastic polyurethanes

The present invention relates to a bulk material comprising solid diisocyanate, especially naphthalene 1,5-diisocyanate or p-phenylene diisocyanate, to a process for production thereof, and to a process for preparing isocyanate prepolymers using the bulk material of the invention, to the isocyanate prepolymers themselves and to the use thereof for preparation of polyurethane elastomers, especially cast polyurethane elastomers.

Bulk material comprising solid diisocyanates and prepolymers containing urethane groups obtainable therefrom

An integrated process for the solution polymerization and subsequent halogenation of butyl rubber in a common medium is disclosed. The process comprises providing a solution polymerization reactor containing a C6 medium mixed with a monomer mixture comprising at least an isoolefin monomer and a multiolefin monomer in a mass ratio of monomer mixture to medium of from 61:39 to 80:20. Once polymerized, residual unreacted monomer mixture is separated from the rubber solution using a distillation process. The residual monomers may then be purified and recycled back into the reactor. The separated rubber solution is then halogenated. The process obviates the need for separating the rubber from the medium following polymerization, then re-dissolving it in another solvent for halogenation, thereby saving energy cost. The process optionally employs heat exchangers for the reactor feed streams to further reduce energy consumption.

Common solvent process for producing high molecular weight halobutyl rubber

The present invention relates to a method for working up distillation, residues from isocyanate production in which monomeric isocyanate present in distillation residues is recovered by means of a spray-dry method and the overall yield of monomeric isocyanate is thus significantly increased.

Method for working up distillation residues from isocyanate production

The invention relates to a method for producing medicaments that contain vardenafil hydrochloride, essentially as trihydrate in solid form, and to medicaments that can be obtained according to this method.

Medicaments containing vardenafil hydrochloride trihydrate

A method for producing bisphenol A in prill form is disclosed. Molten bisphenol is top-fed into a prilling tower via a plate containing a plurality of nozzles. A gas coolant guided through a circuit is led into said tower in a counter flow direction. The prills are cooled to about room temperature, collected at the bottom of the tower and removed. Also disclosed is the device for carrying out the inventive method and the prills thus produced.

Method and device for producing bisphenol a prills and bisphenol a prills produced according to this method

A method for the decomposition of chromium ore in a directly heated revolving tube is described, in which oxygen-containing gases are introduced into the revolving tube by means of below-bed nozzles.

Method for manufacturing alkali chromates from chromium ore

A method for manufacturing alkali chromates by the reacting of chromium ore with alkali compounds and oxidation in an atmosphere containing at least 50% oxygen is described, in which the mixture consisting of chromium ore, alkali compound and optionally leaning materials is heated in a first stage in an atmosphere containing not more than 5 vol. % oxygen to a temperature between 1000.degree. and 1 400.degree. C., and in a second stage is oxidized at a lower temperature of 900.degree. to 1 070.degree. C. with supply of an atmosphere containing at least 50% oxygen.

Growing community of inventors

Odenthal, Germany

Rainer Bellinghausen