Covestro Deutschland Ag

Bayer Intellectual Property Gmbh

Bayer Materialscience Ag

Bayer Cropscience Ag

Bayer Aktiengesellschaft

Lanxess Deutschland Gmbh

Arlanxeo Deutschland Gmbh

Covestro Intellectual Property Gmbh & Co. Kg

Bayer Technology Services Gmbh

Thomas König

Michael Bierdel

Dieter Feucht

Dirk Achten

Ulrich Liesenfelder

Klemens Kohlgrüber

Jörg Kirchhoff

Johan Vanden Eynde

Maren Heinemann

Thomas Böcker

Rainer Sonneck

Guenther Nentwig

Karin Horn

Johann Rechner

Reiner Rudolf

Melanie Möthrath

Dirk Van Meirvenne

Alexander Meyer

Klaus Horn

Uwe Hucks

Helmut-Werner Heuer

Hanns-Ingolf Paul

Richard Weider

Mathias Matner

Christian Kords

Alexander Karbach

Christopher Ong

Rolf Bachmann

Torsten Hagen

Udo Wiesner

Stephan Schubert

Rainer Bellinghausen

Marc Buts

Carsten Conzen

Karl-Robert Boos

Bert Ruytinx

Achim Küpper

Frank Bruynseels

Steffen Kühling

Ing Johan Vaes

Ursula Tracht

Johan Vaes

Helmut Meyer

Helmut Fürsch

Arne Braun

Jürgen Heuser

René De Cleyn

Stefaan De Vos

Hartwig Dauck

Lydia Simon

Stephan Laue

Günther Holdenried

Christoph Biedron

Jörg Krüger

Ruperto P Basilio

Felicitos V Palis

Uwe Arndt

Lars Lachmann

Udo Dünger

Frank Doebert

Andreas Stremmel

Frank Quaeyhaegens

Johan Decloedt

Paul Van Dorst

Claudia Houben

Kevin Kulbaba

Marten VÖLKER

Matthias Soddemann

Julia Maria Müller

An extruder system for degassing a mixture, comprising a first extruder, a second extruder arranged downstream of the first extruder and a transfer zone formed between these extruders, characterized by a pressure regulating device which can regulate the pressure at the outlet of the first extruder.

Extruder system with pressure regulating device

The invention relates to mixing elements with a reduced structural depth for static mixers, to static mixers comprising at least two mixing elements with a reduced structural depth, and to a method for mixing fluids using a mixing element with a reduced structural depth or a static mixer comprising at least two mixing elements with a reduced structural depth. In the mixing elements, the thickness of the transverse strut at its thickest point is maximally 0.9 to 1.1 times the thickness of the webs multiplied by the cosine of half the opening angle O divided by the sine of the whole opening angle O.

Mixing elements with a reduced structural depth for static mixers

Device and method for dispersing solids, liquids and gases in an extruder, having at least one shaft () and one housing (), wherein at least one disk () with recesses is attached to the shaft, which at least one disk co-rotates with the shaft, and a non-co-rotating disk () is arranged immediately adjacent to the disk either in a product flow direction or counter to the product flow direction, which non-co-rotating disk likewise has recesses, and wherein the co-rotating disk is connected to the rotating shaft and has a gap () with respect to the housing, and the non-co-rotating disk is connected to the housing and has a gap () with respect to the rotating core shaft.

Device and method for dispersing solids, liquids and gases in an extruder

The invention relates to mixing elements that have a larger number of basic geometric periods per section and an improved dispersing effect for multi-shaft screw extruders comprising screw shafts that co-rotate in pairs. The invention further relates to the use of the mixing elements in multi-shaft screw extruders, a corresponding screw extruder comprising the mixing elements, and a method for extruding kneadable materials.

Mixing elements having an improved dispersing effect

The present invention provides a nozzle plate and the use of the nozzle plate for producing filaments, preferably silica gel fibers.

Method of producing a filament comprising a silica gel-fiber

The present invention relates to polysiloxane-polycarbonate block cocondensates derived from a continuous melt transesterification process comprising polysiloxane blocks of the formula (1) and polycarbonate blocks having recurring units of the formula (2) having improved rheological properties and good mechanical properties as well as to mouldings and extrudates made from these polysiloxane-polycarbonate block cocondensates and wherein the polysiloxane-polycarbonate block cocondensate has a siloxane domain distribution (diameter of siloxane domains) from 200 nm to 1 &#x3bc;m measured by atomic force microscopy and light microscopy which is in the range of 0.01%-2.5%, based on the total number of siloxane domains.

Polysiloxane-polycarbonate block cocondensates with improved rheological properties

The present invention relates to new screw elements for multi-screw extruders with pairs of co-rotating and fully wiping screws.

Screw elements with improved dispersing action and low energy input

The invention relates to novel screw elements for multi-screw extruders with screw profiles co-rotating in pairs and being fully self-wiping in pairs, to the use of the screw elements in multi-screw extruders and to a process for extruding plastic compositions.

Screw elements for extruding plastic compositions

The present invention relates to a process for preparing polysiloxane-polycarbonate block cocondensates proceeding from specific polycarbonates and hydroxyaryl-terminated polysiloxanes. More particularly, the present invention relates to the preparation of the said block cocondensates by means of a reactive extrusion.

Preparation of siloxane-containing block copolycarbonates by means of reactive extrusion

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 present invention relates to screw elements with novel, tightly intermeshing, self-cleaning, co-rotating screw profiles for multishaft screw machines with pairs of co-rotating and fully abrading screw shafts, to the use of these screw elements in multishaft screw machines and to a method of generating these screw elements.

Screw elements with reduced energy input during the build-up of pressure

The invention relates to a process for extruding plastic compositions. The process in particular relates to the conveying, kneading and/or mixing of plastic compositions, in particular of 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.

Method for extruding plastic masses

The present invention relates to an insecticide-containing fabric containing at least one embedded insecticidally active ingredient in the polymeric matrix and having excellent wash resistance, and also to the products produced from this fabric and to their use for protecting humans, animals and plants against arthropods, particularly for controlling insects.

Insecticide-containing netlike fabric

The invention relates to a method for constructing bodies which, while rotating codirectionally about axes arranged in parallel, constantly touch one another at at least one point.

Method for constructing bodies that rotate in the same direction and are in contact with one another and computer system for carrying out said method

Growing community of inventors

Leverkusen, Germany

Thomas König