Lanxess International Sa

Arlanxeo Deutschland Gmbh

Lanxess Deutschland Gmbh

Bayer Healthcare LLC

Other

Bayer Corporation

Arlanxeo Switzerland S.a.

Hanns-Ingolf Paul

Rolf Feller

John Lovegrove

Paul Wagner

Udo Wiesner

Adam Gronowski

Jörg Kirchhoff

Ricarda Leiberich

Joachim Ritter

Wytold R Lebing

Jorg Kirchhoff

Patricia Alred

Carsten Kreuder

Douglas C Lee

Dana K Adkinson

Klaus-Peter Radtke

Phil Magill

Scott A Cook

Werner Obrecht

Sven Brandau

Michael Klimpel

Matthias Soddemann

Franz-Josef Mersmann

Thomas Koenig

Peter Weuta

Holger Luesgen

Florian Forner

John George Lovegrove

Andreas Krebs

Rolf Grosser

Thomas König

Walter Lange

Klemens Kohlgrüber

David Thompson

Herbert Diehl

Paul Nguyen

Heike Kloppenburg

Rainer Bellinghausen

Wolfgang Krumbe

Alicia Le-Sattler

Ursula Tracht

Joerg Kirchhoff

Werner Bäcker

Andreas Jupke

Dietrich Seidel

Tobias Reichelt

Doug C Lee

Martin Hecker

Martin Siebuerger

Udo Weisner

Michael Berger

Nicolai Dieltiens

Luc Timmermans

Jan Van Loock

Guy Vercammen

Axel Boensch

Elvira Krebs, Legal Representative

John George Arnold Lovegrove

Holger LÜSGEN

Adam A Gronowski

Werner Baecker

Klemens Kohlgrueber

Holger Lusgen

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 teachings herein relate to an inspection apparatus for visual inspection of elastic particles and to methods of inspecting elastic particles. The inspection apparatus employs at least one flap for stopping or reducing a horizontal portion of the movement of particles leaving a conveyer belt. Preferably the flap dissipates a part of the kinetic energy of the elastic particles and/or reducing a horizontal rebound of the elastic particles. The teachings herein may be employed in a method with improved accuracy of sorting elastic particles.

Inspection apparatus and method for visual inspecting elastic particles

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 a method for degassing elastomer-containing media, such as elastomer solutions and dispersions in particular, and degassing devices () for carrying out said method.

Method for removing volatile components from elastomer-containing media and degassing devices therefor

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 favorable process for the preparation of brominated butyl rubbers, that uses a bromination agent and a oxidizing agent in order to enhance the utilization of bromine contained in the bromination agent. In a preferred embodiment a common medium for both solution polymerization and subsequent bromination of the rubber is employed.

Process for producing brominated butyl rubber

The present invention relates to a method to control a liquid feed stream carried out by measuring at least one spectrum of the liquid feed stream comprising an initiator or catalyst, determining its activity using a predictive model on the basis of said spectrum and adjusting the feed streams and/or the preparation conditions of the feed stream comprising the initiators or catalysts in order to attain or maintain a desired level of total activity. In a further aspect the invention relates to a controlled process for the preparation of polymers in a polymerization reactor by contacting liquid feed streams comprising monomers and initiators or catalysts, whereby the control of the feed streams entering the polymerization reactor and/or the initiator or catalyst preparation is carried out by measuring at least one spectrum of the liquid feed stream comprising an initiator or catalyst, determining its activity using a predictive model on the basis of said spectrum and adjusting the feed streams and/or the preparation conditions of the feed stream comprising the initiators or catalysts in order to attain or maintain a desired level of total activity within the polymerization reactor. More particularly, the invention relates to a method for controlling the activity of aluminum containing initiators in a process for the co-polymerization of isolefins and multiolefins, in particular isobutylene and isoprene. The present invention further to device and a chemical plant suitable to operate said process.

Activity monitoring and polymerization process control

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

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Leverkusen, Germany

Hanns-Ingolf Paul