Lanxess International Sa

Arlanxeo Deutschland Gmbh

Lanxess Deutschland Gmbh

Bayer Aktiengesellschaft

Arlanxeo Switzerland S.a.

Rolf Feller

Hanns-Ingolf Paul

John Lovegrove

Paul Wagner

Adam Gronowski

Jörg Kirchhoff

Udo Wiesner

Jorg Kirchhoff

Carsten Kreuder

Joerg Kirchhoff

Dana K Adkinson

Ricarda Leiberich

Joachim Ritter

Phil Magill

Werner Obrecht

Sven Brandau

Michael Klimpel

Franz-Josef Mersmann

Matthias Soddemann

Thomas Koenig

Peter Weuta

Werner Bäcker

Florian Forner

John George Lovegrove

Alexander Klausener

David Thompson

Paul Nguyen

Heike Kloppenburg

Rainer Bellinghausen

Wolfgang Eymann

Wolfgang Krumbe

Alicia Le-Sattler

Frank D&ouml;bert

Heiner Stange

Rolf Josten

Andreas Jupke

Thomas-Oliver Neuner

Mesut Fidan

Udo Weisner

Martin Siebuerger

Martin Hecker

Werner Baecker

Adam A Gronowski

John George Arnold Lovegrove

Dr Jörg Kirchhoff Kirchhoff

Dr Thomas König König

DrHans-Ingolf Paul

Dr Matthias Soddemann Soddemann

Dr Paul Wagner Wagner

Prof Dr Werner Obrecht Obrecht

DI Franz-Josef Mersmann Mersmann

The invention relates to an efficient process for the preparation of isoolefin polymers such as polyisobutene or butyl rubber by polymerization of isobutene and optionally further monomers in the presence of an initiator system prepared by continuously contacting at least one boron or aluminium compound and at least one initiator.

Process for the production of isoolefin polymers with improved initiator system preparation

The invention relates to a reactor and to a method for continuous polymerization, in which said reactor for the continuous production of polymers, particularly synthetic rubbers, contains at least one substantially tubular reactor housing (), wherein said reactor housing () has a drive shaft () that is connected to at least one agitator () arranged such that it can rotate inside the reactor housing (), and the agitator contains at least one, and preferably two, three or four helical mixing elements () which are designed to be preferably close to the wall or to come into contact with the wall.

Reactor and method for continuous polymerization

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

The present invention relates to specific water and solvent-free nitrile rubbers having specific functional groups and/or end groups, a process for the production thereof and the use thereof.

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

The present invention relates to water and solvent-free halogenated butyl rubber products as well as a process for the production thereof.

Process for the production of water and solvent-free halobutyl rubbers

The invention relates to methods for isolating and obtaining polychloroprene solids, wherein an aqueous polychloroprene dispersion is brought in contact with steam containing coagulant, whereby the polychloroprene solid coagulates.

Method for obtaining and isolating polychloroprene solids

The present invention relates to water and solvent-free polymers, in particular water and solvent-free synthetic rubber products like non-halogenated and halogenated butyl rubber products as well as a process for the production thereof. The invention further relates to a device suitable to accomplish said process.

Process for the production of water and solvent-free polymers

The invention relates to an energy efficient, environmentally favourable process for preparing water and solvent-free rubber ionomers and/or polymer nanocomposites comprising said rubber ionomers.

Process for the production of rubber ionomers and polymer nanocomposites

The present invention relates to specific water and solvent-free nitrile rubbers having specific functional groups and/or end groups, a process for the production thereof and the use thereof. This process involves removing volatile compounds from a fluid (F) containing (1) at least one nitrile rubber and (2) at least one volatile compound, wherein the process comprises at least the steps of a.) treating the fluid (F) in at least one conversation unit, b.) retreating the concentrated fluid from step a.) in at least one retreating unit and c.) feeding the retreated concentrated fluid from step b.) into at least one retreating unit.

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 invention relates to an energy efficient, environmentally favorable process for the preparation of brominated rubbers, in particular bromobutyl rubber, that uses a common medium for both solution polymerization and subsequent bromination of the rubber and which further exhibits an enhanced bromine usage due to the use of a oxidizing agent. More particularly, the invention relates to a process that employs a common aliphatic medium for both solution polymerization and bromination of rubber in the presence of a brominating agent and an oxidizing agent with intermediate removal of un-reacted monomers.

Common solvent process for producing high molecular weight brominated rubber

The invention relates to an energy efficient, environmentally favorable process for the preparation of halogenated rubbers, in particular chloro- and bromobutyl rubber, that uses a common aliphatic medium of specific composition for both solution polymerization and subsequent halogenation of the rubber. More particularly, the invention relates to a process that employs a common aliphatic medium for both solution polymerization and halogenation of rubber with intermediate removal of un-reacted monomers.

Common solvent process for producing high molecular weight halogenated rubber

The invention relates to an energy efficient, environmentally favorable process for the preparation of butyl ionomers that uses a common medium for both solution polymerization and subsequent bromination of butyl rubber. More particularly, the invention relates to a process that employs a common aliphatic medium for both solution polymerization and bromination of butyl rubber in the presence of a brominating agent and optionally for subsequent reaction with at least one nitrogen and/or phosphorus based nucleophile.

Process for production of halobutyl ionomers

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Mettmann, Germany

Rolf Feller