Lanxess Corporation

Bayer Corporation

Arlanxeo Singapore Pte. Ltd.

Lanxess Deutschland Gmbh

Bayer Aktiengesellschaft

Arlanxeo Canada Inc.

Sharon X Guo

Gregory J E Davidson

Frederic Guerin

Paul Nguyen

Stephan Glander

Victor Nasreddine

Zsolt Szentivanyi

Christopher Ong

Frédéric Guérin

Stephen D Pask

Harald Bender

Sarah Elliott

Treena Crockett

Brianna Binder

Dirk Achten

Hui Li

Lorenzo Ferrari

Matthias Soddemann

Carl Walter Von Hellens

Lan Lu

Rayner Krista

Phil Magill

Mark William Ingratta

Dirk Schaefer

Christopher M Ong

Rotraud Casper, Legal Representative

Janet Gamlin

Hans Christian Strauch

Fr&eacute;d&eacute;ric Gu&eacute;rin

Zsolt Szentivanyl

Franz Mersmann

Zhenli Wei

Hans Rafael Winkelbach

Janet N Gamlin

Gregory J Davidson

Mark Ingratta

Gregory Je Davidson

Frédéric Guerin

A process for producing a crosslinked polymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A process for producing a hydroxylated unsaturated isoolefin copolymer involves contacting an epoxidized unsaturated isoolefin copolymer with a catalytic amount of an acid in an absence of a solvent. A hydroxylated unsaturated isoolefin copolymer having hydroxyl groups in endo configurations may be produced thereby.

Treatment of epoxidized unsaturated isoolefin copolymers

A polyisoolefin-based polymer composition having a multimodal molecular weight distribution is described, which can be prepared by the late addition of a chain transfer agent to the polymerization process. The polymer composition has a low molecular weight fraction having a peak molecular weight (M) of less than about 100,000 g/mol and a high molecular weight fraction having a peak molecular weight (M) of greater than about 250,000 g/mol, the low molecular weight fraction present in the composition in an amount less than the high molecular weight fraction. Cured articles produced from the polyisoolefin-based polymer composition exhibit improved processability while maintaining physical properties.

Multi-modal polyisoolefin compositions and processes therefor

A process for producing an allylic alcohol functionalized butyl rubber involves contacting an epoxidized butyl rubber with benzoic acid, an analogue of benzoic acid or a C1-C7 alkanoic acid. The process and a polymer compound comprising the epoxidized butyl rubber and the benzoic acid, analogue of benzoic acid or a C1-C7 alkanoic acid provide a cost effective route to a polar functionalized butyl rubber, particularly to butyl rubber comprising allylic alcohol functional groups.

Butyl rubber containing allylic alcohol

A polymer composition is provided with a multi-modal molecular weight distribution of a halo-containing polymer. The halo-containing polymer is has multi-functional phosphine linkages at less than 10% of halo sites of the halo-containing polymer that were available before multi-functional phosphine linking. A process for producing a polymer composition having a multi-modal molecular weight distribution involves dispersing a multi-functional phosphine compound in a halo-containing polymer, the halo-containing polymer comprising a total number of available halo sites, and reacting the multi-functional phosphine compound with the halo-containing polymer at an elevated temperature to produce the polymer composition in which less than 10% of the total number of available halo sites are reacted with the phosphine compound to provide multi-functional phosphine linkages in the halo-containing compound.

Polymer compositions having a halo-containing polymer with a multi-functional phosphine linkage

A process for epoxidation of an unsaturated polymer involves mixing an unsaturated polymer and a peroxy acid in an absence of solvent to produce an epoxidized polymer. The process may require no solvent, require no catalyst, require no or little applied external heat input, require no applied cooling, require less epoxidation agent, be faster and/or result in more efficient conversion of the unsaturated polymer.

Process for epoxidation of unsaturated polymer

This invention relates to a process for the hydrogenation of diene-based copolymers in the presence of catalysts on specific carrier materials containing at least one hyper-branched polymer.

Hydrogenation of diene-based polymers

The present invention provides a vulcanizable composition containing a specific hydrogenated nitrile rubber, at least one cross-linking agent and carbon nanotubes, a process for preparing such composition and the use thereof for preparing vulcanizates. Said vulcanizates exhibit excellent heat performance, oil resistance and mechanical strength.

Carbon nanotube containing rubber compositions

An elastomeric composition containing a rubber polymer, an acid acceptor, and a silane-modified needle-like/acircular mineral additive. Compositions according to the present invention have superior heat resistance, compression set resistance, and improved processability (lower compound Mooney) compared to known rubber compositions.

Elastomeric compositions with improved heat resistance, compression set, and processability

The present invention relates to hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art.

Low molecular weight hydrogenated nitrile rubber

The present invention relates to the process for preparing hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art.

The present invention relates to hydrogenated nitrite rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art. The present invention is also related to shaped articles containing hydrogenated nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art.

The present invention relates to nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art. The present invention also relates to a process for the manufacture of said nitrile rubber and the use of said nitrile rubber for the manufacture of shaped articles.

Low molecular weight nitrite rubber

The present invention relates to an elastomer rubber composition containing a carboxylated rubber polymer and a fluorinated additive. The present invention is also directed to an elastomer composition containing a hydrogenated carboxylated nitrile rubber and a fluorinated additive.

Rubber compositions having improved physical and low temperature properties

The present invention provides a novel process for preparing hydrogenated nitrile rubbers comprising subjecting nitrile rubbers in a spinning disk reactor to hydrogenation. The present process is less demanding with regard to its reaction conditions, like e.g. the hydrogen pressure to be applied, compared to known processes and significantly reduces the cost of the hydrogenation process and in particular the equipment cost.

Process for preparing hydrogenated nitrile rubbers

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Stratford, Canada

Sharon X Guo