Lanxess Deutschland Gmbh

Technische Universitat Munchen

Julia Maria Müller

Werner Obrecht

Oskar Nuyken

Christopher Ong

Martin Schneider

Ludek Meca

Lubica Triscikova

Heinz Berke

Monika Kellner

Martin D I Schneider

Oskar Prof Nuyken

Provided are new partially hydrogenated nitrile rubbers which are distinguished by a specific ratio of viscosity to molecular weight, and also vulcanizable mixtures and vulcanizates based on said rubbers, and also the associated preparation processes. The partially hydrogenated nitrile rubbers lead to compounded formulations having advantageous processing properties in conjunction with excellent vulcanizate properties.

Partially hydrogenated nitrile rubbers

A process of degrading nitrile rubbers comprises subjecting them to a metathesis reaction in the presence of specific catalysts with increased activity.

Process for degrading nitrile rubbers in the presence of catalysts having an increased activity

New catalyst systems for metathesis reactions, in particular for the metathesis of nitrile rubber, are provided.

Process for reacting chemical compounds in the presence of catalyst systems

A novel process for the metathetic degradation of nitrile rubbers is provided which uses specific transition metal complex catalysts showing an increased activity.

Metathesis of nitrile rubbers in the presence of transition metal complex catalysts

The metathetic degradation of nitrile rubber can be improved by use of a combination of metal-carbene complex catalysts with specific transition metal additives.

Process for the metathetic degradation of nitrile rubber

An improved process for the metathetic degradation of nitrile rubber using catalyst systems comprising the catalyst and also a phosphane or diphosphane is provided.

Process for the metathetic degradation of nitrile rubbers

A novel process for the degradation of nitrile rubber by metathesis using ruthenium- or osmium-based catalysts which have both a substituted or unsubstituted imidazolidine ligand and a carbene ligand bearing a phosphonium radical is provided.

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Blaustein, Germany

Julia Maria Müller