Bayer Materialscience Ag

Bayer Aktiengesellschaft

Solarworld Aktiengesellschaft

Covestro Deutschland Ag

Lanxess Deutschland Gmbh

Bayer Intellectual Property Gmbh

Saltigo Gmbh

Bayer Technology Services Gmbh

Allnex IP S.a.r.l.

Futurecarbon Gmbh

Suzhou Skywell Healthcare Information Co, Ltd

Sigurd Buchholz

Leslaw Mleczko

Aurel Wolf

Reiner Rudolf

Volker Michele

Christian Münnich

Karl-Robert Boos

Ursula Tracht

Reinhard Langer

Daniel Gordon Duff

Sebastian Falss

Wolfgang Fischer

Manfred Schmidt

Werner Obrecht

Alexander Klausener

Reinhard Halpaap

Hans-Dieter Block

Paul Wagner

Andreas Bulan

Rainer Weber

Frank Richter

Michael Ludewig

Michael Bierdel

Hans-Georg Pirkl

Andreas Hecking

Rolf Bachmann

Heiko Hocke

Thomas Früh

Torsten Ziser

Ralph Weber

Peter Weuta

Helmut Meyer

Björn Henninger

Robert Vieler

Elmar Bramer-Weger

Anke Beckmann

Andreas Gosch

Andreas Schulze Tilling

Martin Anstock

Günter Rauchschwalbe

Karl-Ludwig Metzger

Sebastian Falß

Torsten Sill

Felix-Karl Oliver Schlüter

Maria Pilar Ezpeleta Tejero

Philipp Schlichthärle

Philip Bahke

Leslaw Mileczko

Claudia Willems

Matthias Voetz

Martin Schmid

Adrian Cosmin Dobre

Maziar Kakhi

A reaction chamber for a chemical reactor comprises a casing () of the reaction chamber, a floor () of the reaction chamber having an opening () located in the floor, an agitator shaft () located in the chamber and having at least one agitator element (), connected thereto, wherein the agitator shaft (), seen in the longitudinal direction, has a beginning () and an end (). In the opening () of the floor () a removable sleeve () is provided, which projects out of the reaction chamber. The sleeve () is arranged in alignment with the axis of rotation of the agitator shaft (). The internal diameter of the sleeve () is greater than the diameter of the agitator shaft () and the agitator shaft (), at the beginning () thereof and/or at the end () thereof, is adapted to absorb reversibly a torque provided by means of a further shaft and/or to transmit a torque to a further shaft. Using such a reaction chamber, it is possible to build up modular chemical reactors having decreased backmixing.

Reaction chamber for a chemical reactor, and chemical reactor constructed therefrom

The present invention relates to a multistage stirred reactor, comprising a multiplicity of mutually adjacent reaction chambers and stirring elements for mixing the contents of at least one of the reaction chambers, wherein, between adjacent reaction chambers, there is in each case provided at least one opening that can be closed by means of closure means, such that in the open state there is a fluidic connection between the adjacent reaction chambers and in the closed state the adjacent reaction chambers are separated from one another. At least one of the closure means () is connected to an actuation rod () that is guided out of the stirred reactor. The actuation rod () can be moved back and forth between at least one first position and a second position, by rotation and/or displacement, wherein in the first position closure means () that are connected to the actuation rod () effect an open state of the opening assigned to them and in the second position closure means () that are connected to the actuation rod () effect a closed state of the opening assigned to them.

Multi-stage stirred reactor having reduced back mixing

A process for continuous preparation of oligomeric or polymeric isocyanates by catalytic modification of monomeric di- and/or triisocyanates, characterized in that at least one isocyanate component A and at least one catalyst component B are combined continuously in a reaction apparatus and conducted through the reaction apparatus as a reaction mixture, the residence time distribution being characterized according to the dispersion model by Bo (Bodenstein number) above 40, preferably above 60 and most preferably above 80.

Process for continuous isocyanate modification

The present invention relates to a process for the production of carbon nanotubes, in particular those having a diameter of 3-150 nm and an aspect ratio of length:diameter (L:D)&#x3e;100, by decomposition of hydrocarbons on a heterogeneous catalyst which comprises Mn, Co, preferably also molybdenum, and an inert support material, and the catalyst and the carbon nanotubes themselves and the use thereof.

Catalyst for producing carbon nanotubes by means of the decomposition of gaseous carbon compounds on a heterogeneous catalyst

The present invention relates to a process for the production of carbon nanotubes by decomposition of hydrocarbons on a heterogeneous catalyst in a fluidized bed reactor, wherein the reactor can be operated batchwise or continuously, and in the case of continuous operation discharge can take place with sifting or without sifting.

Process for the production of carbon nanotubes in a fluidized bed

The present invention relates to the technical field of isocyanates. The present invention provides a method for preparing NCO prepolymers by reacting a stoichiometric excess of an organic isocyanate with an isocyanate-reactive component, the reaction components being mixed together and the mixture being introduced directly into a storage or transport vessel, where it reacts to completion.

Method for preparing polyurethane prepolymers containing isocyanate groups

The invention relates to a composition containing at least one microgel, at least one carbon nanotube and at least one organic medium. Said organic medium can be cross-linked or non cross-linked.

Carbon nanotubes and organic media containing microgels

A novel carbon nanotube powder containing carbon nanotubes which have a roll-like structure, also novel carbon nanotubes having a roll-like structure, novel processes for the production of the carbon nanotube powders and of the carbon nanotubes, and their use as an additive or substrate for various applications are described.

Carbon nanotube powder, carbon nanotubes, and processes for their production

The invention relates to a continuous process for preparing radiation-curable prepolymers containing urethane groups, more particularly urethane acrylates.

Process for preparing radiation-curable prepolymers containing urethane groups

The present invention relates to the industrial production of vinylene carbonate (VC) by eliminating hydrogen chloride from chloroethylene glycol carbonate (CGC) or solid catalysts in the gas phase, the reaction being carried out over a catalyst bed agitated by thorough mixing.

Process for producing vinylene carbonate

Process for the continuous production of catalysts which are useful for the production of carbon nanotubes by decomposition of gaseous carbon compounds.

Process for the continuous production of catalysts

The invention relates to a method for the thermal decarboxylation of dicarboxylic acids, in particular to 3,4-ethylene dioxythiophene-2,5-dicarboxylic acid as an educt. According to said method the educt is used in solid form and/or the reaction is carried out in the presence of a plurality of fluidised bed bodies. No solvents are used in the reaction and the decarboxylation product that is formed during the reaction is carried away from the reaction zone in gaseous form.

Method for the decarboxylation of dicarboxylic acids

The invention relates to a method for producing granular silicon by thermal decomposition of a gas containing silicon in a fluidized bed, said decomposition occurring in the presence of free-flowing mobile elements. Preferably, said free-flowing mobile elements become devoid of silicon in a separate procedural step, said silicon being deposited during decomposition of gas containing silicon, by reacting with hydrogen halides, halogens, alkyl halogenides, aryl halogenides or combinations of halogen and/or hydrogen halide and/or oxidized mineral acids and/or by thermal treatment of said elements.

Method for producing highly purified, granular silicium

The invention relates to a method for producing highly pure, granular silicon by decomposing a gas containing silicon in a procedure comprising at least two operating states, at least one state comprising the increased formation of nucleus particles from the decomposition of said gas containing silicon and at least one other state comprising the increased separation of the silicon with expansion of the diameter of the silicon granules. The invention also relates to the use of silicon produced in this way and to highly pure, granular silicon particles which are characterised by a coreless structure.

Method for producing highly pure, granular silicon

Growing community of inventors

Kö'ln, Germany

Sigurd Buchholz