Arlanxeo Deutschland Gmbh

Lanxess Corporation

Synthomer Sdn. Bhd

Lanxess Deutschland Gmbh

Zhenli Wei

Qingchun Liu

Werner Obrecht

Garry Llewellyn Rempel

Qinmin Pan

Sarah David

Karola Schneiders

Martin Hoch

Thian Hong Ng

Alexandra Abele

Dieter Wolters

Floyd Greaves

Nian Gao

This invention relates to novel hydrogenation catalyst compositions obtainable from reacting metal-based complex hydrogenation catalysts with specific co-catalysts and to a process for selectively hydrogenating nitrile rubbers in the presence of such novel hydrogenation catalyst compositions.

Hydrogenation catalyst compositions and their use for hydrogenation of nitrile rubber

This invention relates to a novel process for selectively and efficiently hydrogenating nitrile rubber in the presence of specific complex catalysts system comprising an NHC-ligand comprising Ru-complex catalyst and a specific hydrogenation enhancer.

Hydrogenation of nitrile rubber

The present invention relates to a polymer latex for dip-molding applications including: particles of a carboxylated conjugated diene nitrile latex polymer in combination or association with particles of a latex polymer including at least one oxirane-functional group, to the use of said polymer latex for the production of dip-molded articles or for coating or impregnating a substrate, to compounded compositions including said polymer latex, to a method for making dip-molded articles and to articles made by using said polymer latex.

Polymer latex for dip-molding applications

Catalyst compositions based on Ruthenium- or Osmium-based complex catalysts and specific co-catalysts are provided for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions.

Catalyst compositions and their use for hydrogenation of nitrile rubber

This invention relates to novel catalyst compositions based on Ruthenium- or Osmium-based complex catalysts of the Grubbs-Hoveyda, Grela or Zhan type and specific co-catalysts comprising at least one vinyl group, pref. ethyl vinyl ether, and to a process for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions, preferably with a preceding metathesis step using the same complex catalyst as in the hydrogenation step.

The present invention relates to ruthenium- or osmium-based complex structures, to the synthesis thereof and their use as catalysts for hydrogenating unsaturated substrates.

Ruthenium-or osmium-based complex catalysts

This invention relates to a novel process for selectively hydrogenating nitrile rubbers in the presence of specific Ruthenium based complex catalysts without simultaneous molecular weight degradation by a metathetic reaction.

The present invention provides novel ruthenium or osmium based complex structures with a unique combination of ligands comprising a Schiff-base type ligand, a N-heterocyclic carbene ligand and a CO ligand which can be prepared according to two different routes involving easily accessible starting materials and which represent excellent catalysts for hydrogenating unsaturated compounds, oligomers and polymers, in particular at unforeseeably low temperatures. 

Ruthenium- or osmium-based complex catalysts

This invention relates to novel catalyst compositions based on Ruthenium- or Osmium-based complex catalysts and to a process for selectively hydrogenating nitrile rubbers in the presence of such catalyst compositions.

The present invention relates to a process for the selective hydrogenation of the carbon-carbon double bonds in a diene-based polymer latex using a water-soluble catalyst and simultaneously a water-insoluble co-catalyst.

Hydrogenation of diene-based polymer latex

The present invention relates to a process for the hydrogenation of the carbon-carbon double bonds in a diene-based polymer latex in the absence of any organic solvent by a catalytically active system prepared in-situ based on a first main catalyst component and a secondary water-insoluble catalyst component.

Growing community of inventors

Shandong, China

Zhenli Wei