Lanxess Corporation

The University of Waterloo

Lanxess Deutschland Gmbh

Qinmin Pan

Garry Llewellyn Rempel

Jialong Wu

Yin Liu

Guangwei He

Lifeng Zhang

Minghui Liu

Zehnli Wei

Chandra Mouli Madhuranthakam

The present invention relates to diene-based hydrogenated polymer latex particles having a particle size measured as dvalue of less than 60 nm and a method for their production and their use. The nanosized hydrogenated diene-based polymers obtained show improved properties, especially with respect to resistance to degradation by heat, oxygen and ozone.

Nano-sized hydrogenated diene-based latex particles

A technique of improving the hydrogenation reaction of diene-based polymers, present in aqueous suspension, by in-situ synthesizing the catalyst in the presence of a specific aliphatic alcohol is disclosed. The process allows the selective hydrogenation of the carbon-carbon double bonds in the diene-based polymers with a high degree of hydrogenation and short reactions times. The improved process eliminates the complicated catalyst synthesis operations so far necessary.

Hydrogenation of diene-based polymer latex in the presence of an in situ synthesized catalyst

The present invention provides a novel process for subjecting a diene-based-polymer to a metathesis reaction in a first step and a selective hydrogenation of the carbon-carbon double bonds present in such diene-based polymers in a second step using a ruthenium or osmium based complex catalyst, wherein the diene-based polymer is present in latex form, this means as a suspension of diene-based polymer particles in an aqueous medium.

Tandem metathesis and hydrogenation of diene-based polymers in latex

The present invention provides a novel process for selectively hydrogenating the carbon-carbon double bonds in diene-based polymers which are present in latex form, this means as a suspension of diene-based polymer particles in an aqueous medium, using a Ruthenium or Osmium-based complex catalyst without any organic solvent.

Hydrogenation of a diene-based polymer latex

The present invention refers to diene-based unsaturated polymer latex particles having a particle size measured as d-value of less than 60 nm and a method for their production. Methods for using the diene-based polymer latex as rubber and for conversion to hydrogenated polymers, with reduced gel formation, are also disclosed.

Nano-sized diene-based polymer latex particles comprising particles having average particle size of less than 30 nm

Proposed is a process for the continuous hydrogenation of carbon-carbon double bonds in an unsaturated polymer to produce a hydrogenated polymer, said unsaturated polymer being based on a conjugated diolefin and at least one other copolymerizable monomer, in the presence of a homogeneous or heterogeneous catalyst, wherein said unsaturated polymer, hydrogen and said homogeneous or heterogeneous catalyst is passed through a multistage agitated reactor, comprising a cylindrical, elongated shell having closed ends and separated by baffles into a multiplicity of discrete chambers with access from one chamber to another through concentric circular openings, axially centered with said baffles and a continuous rotatable shaft extending concentric with said baffles within said shell with at least one impeller attached thereto positioned in each chamber, said continuous rotatable shaft and said circular openings providing annular openings and said hydrogenated polymer being withdrawn at the opposite end of the multistage agitated reactor at which the feed is introduced.

Process for the continuous hydrogenation of carbon-carbon double bonds in an unsaturated polymer to produce a hydrogenated polymer

The present invention relates to a process for the hydrogenation of the carbon-carbon double bonds in diene-based polymers in bulk form by treatment of said diene-based polymer with hydrogen in the presence of an iridium containing catalyst and in the absence of any organic solvent.

Hydrogenation of diene-based polymers

The present invention relates to a process for the selective hydrogenation of the carbon-carbon double bonds in diene-based polymers in bulk form by treatment of the polymer with hydrogen in the presence of a platinum group metal containing catalyst and in the absence of any organic solvent.

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.

The present invention relates to a process for the hydrogenation of the carbon-carbon double bonds in diene based polymer latex.

A process is provided for the hydrogenation of carbon-carbon double bonds in polymers by treatment of the polymers with hydrogen in the presence of rhodium-based catalysts and in the complete absence of organic solvent.

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Waterloo, Canada

Qinmin Pan