Covestro Deutschland Ag

Arlanxeo Deutschland Gmbh

Lanxess Deutschland Gmbh

Lanxess International Sa

Thomas Koenig

Michael Bierdel

Johann Rechner

Joerg Kirchhoff

Werner Obrecht

Paul Wagner

Hanns-Ingolf Paul

Ulrich Liesenfelder

Rolf Feller

John Lovegrove

Franz-Josef Mersmann

Matthias Soddemann

Johan Vanden Eynde

Klemens Kohlgrüber

Reiner Rudolf

Udo Wiesner

Carsten Conzen

Stefan Westhues

Jorg Kirchhoff

Klemens Kohlgrueber

Bert Ruytinx

Frank Bruynseels

Daniel Thiel

Ing Johan Vaes

Roland Engberg

Aurel Wolf

Gudrun Schmidt

The present invention relates to a process for the production of water and solvent-free hydrogenated nitrile rubber polymers, to the hydrogenated nitrile rubbers and the use thereof.

Process for the production of water and solvent-free hydrogenated nitrile rubbers

A process for extruding plastic compositions is provided. The process comprises providing a multi-screw extruder with screw elements and conveying, kneading, mixing, degassing or compounding the plastic compositions in the multi-screw extruder using the screw elements.

Process for extruding plastic compositions

The invention relates to polycarbonates with extremely low residual levels of volatile constituents and thermal degradation products, and also improved optical properties, especially Yellowness Index (YI) and good thermal stability, from solvent-containing polymer melts. The invention further relates to an apparatus and a process for preparing these polycarbonates with the aid of a devolatilizing extruder with at least three devolatilizing zones, and zones for introducing entraining agent into dispersion are present upstream of at least three devolatilizing zones.

Ultra-high purity polycarbonates having good inherent color and thermal resistance and a device and a method for producing the same

The invention relates to a process for extruding plastic compositions, in particular polymer melts and mixtures of polymer melts, above all thermoplastics and elastomers, particularly preferably polycarbonate and polycarbonate blends, also with the incorporation of other substances such as for example solids, liquids, gases or other polymers or other polymer blends with improved optical characteristics, with the assistance of a multi-screw extruder with specific screw geometries.

Method for extruding plastic materials

The present invention relates to a process for devolatilising polymer-containing media such as, in particular, polymer melts, polymer solutions and dispersions and also devolatilisation apparatuses for carrying out the abovementioned process.

Degassing method, degassing device and use of screw elements

The present invention relates to a process for devolatilizing polymer-containing media such as, in particular, polymer melts, polymer solutions and dispersions and also devolatilisation apparatuses for carrying out the abovementioned process.

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Leverkusen, Germany

Thomas Koenig