Lyondell Chemical Technology, L.p.

Basell Poliolefine Italia, S.p.a.

Montell Technology Company Bv

Basell Poliolefine Italia S.r.l.

Himont Incorporated

Basell Technology Company B.v.

Equistar Chemicals, LP

Quantum Chemical Corporation

Montell North America Inc.

Vu Anh Dang

Luigi Resconi

Cheng Q Song

Dinshong Dong

Lin-Chen Yu

Roger A Grey

Krishna Raman

Sandor M Nagy

Tiziano Dall'Occo

Richard J Fezza

Clyde E Bishop

Maurizio Stefano Galimberti

David W Leyshon

Davide Balboni

Robert L Jones, Jr

Anthony J De Nicola, Jr

Tam T M Phan

Gleason O Cookson

Theodore Dziemianowicz

Daniel E Schneckenburger

Chun D Lee

Charles S Holland

Lei Zhang

Colin John Schaverien

Sameer D Mehta

Beaven S Mandimutsira

Edrick Morales

Jay F Miller

Steven T Coleman

Jude T Ruszkay

Jack Kwiatek

James R Beren

Ronald F Becker

Joseph Metrick

Jeanine A Smith

Alessia Boscarato

Shaotian Wang

Jeffrey D Abata

Propylene production processes are discussed herein. The propylene production processes may include contacting an olefin feed including butene with ethylene in the presence of a catalyst system including a metathesis catalyst under reaction conditions sufficient to form a product stream including propylene, wherein the metathesis catalyst includes molybdenum and the reaction conditions include a reaction temperature of less than 250&#xb0; C.

Propylene production processes and catalyst systems for use therein

The present disclosure relates to a method of epoxidizing an olefin to form an epoxide, the method comprising contacting an alkeneor aralkenewith a titanium silica catalyst, a peroxide, a buffer, and one or more organic solvents in a reaction mixture, wherein the one or more organic solvents comprise a first organic solvent selected from:R&#x2014;OH&#x2003;&#x2003;(I),R&#x2014;CN&#x2003;&#x2003;(II),R&#x2014;C(O)&#x2014;R&#x2003;&#x2003;(III) orR&#x2014;O&#x2014;R&#x2003;&#x2003;(IV)

Catalyst performance in propylene epoxidation

The present disclosure relates to a method of preparing propylene oxide comprising the steps:

Process for forming propylene oxide from oxidation of methyl benzyl alcohol

The present disclosure generally relates to a silica-titanium catalyst prepared by first reacting a solid support with a metal alkoxide and then depositing titanium onto the solid support for the epoxidation of alkenes and aralkenes and a method of preparing the catalyst thereof. In some embodiments, the present disclosure relates to methods of using the catalyst described herein for the production of epoxides.

Epoxidation catalysts based on metal alkoxide pretreated supports

The present invention relates to a process comprising extruding a blend of an first propylene polymer comprising a non-phenolic stabilizer and a non-irradiated second propylene polymer, wherein the irradiation of the first propylene polymer was conducted in a reduced oxygen environment, and the irradiated first propylene polymer and the non-irradiated second propylene polymer were blended at a temperature below the melting point of the first and second propylene polymers.

Extrusion processes using high melt strength polypropylene

The invention is a process for epoxidizing an olefin with hydrogen and oxygen in a solvent comprising acetonitrile in the presence of an quinone-acid salt and a catalyst comprising a titanium zeolite and a noble metal. The process results in higher productivity and improved selectivity to propylene oxide from hydrogen and oxygen, as compared to processes that use only a quinone.

Direct epoxidation process

The present subject matter relates generally to polymer compositions, and more particularly to irradiated polymer compositions comprising at least one non-phenolic stabilizer. The present polymer compositions comprise an unexpected balance of properties after being subjected to irradiation treatments, including an unexpected combination of a lower melt flow rate ratio (MFR) and high melt tension after being irradiated, while minimizing negative yellowing effects.

Irradiated polyolefin composition comprising a non-phenolic stabilizer

The present subject matter relates to processes for irradiating visbroken propylene polymer compositions or extrudates of propylene polymer compositions containing a propylene polymer having a low polydispersity index and a non-phenolic stabilizer.

Process for producing high melt strength polypropylene

A class of bridged or unbridged metallocene compounds is disclosed, wherein the cyclopentadienyl ligands have two or four adjacent substituents forming one or two alkylenic cycles of from 4 to 8 carbon atoms. These metallocenes are useful as catalyst components for the polymerization of olefins, particularly for the (co)polymerization of ethylene and for the polymerization of propylene.

Metallocene compounds and use thereof in catalysts for the polymerization of olefins

A compatible blend of an engineering thermoplastic such as a polyamide and an olefin polymer material is prepared by (1) making an oxidized olefin polymer material containing carboxylic acid groups or derivatives thereof, (2) extruding a mixture of (a) the oxidized olefin polymer material from step (1), (b) an engineering thermoplastic, (c) optionally, an inorganic base, and (d) optionally, a non-oxidized olefin polymer material, and (3) recovering a blend of the engineering thermoplastic, the oxidized olefin polymer material or an ionomer thereof, which acts as a compatibilizer, and, optionally, the non-oxidized olefin polymer material. The oxidized olefin polymer material can be made by treating the olefin polymer material with an organic peroxide initiator while adding a controlled amount of oxygen.

Compatibilizing agent for engineering thermoplastic/polyolefin blend

Irradiated, oxidized olefin polymer coupling agents for use in the manufacture of non-halogenated flame retardant-containing and filler-containing olefin polymer compositions and coupling agent-containing olefin polymer concentrates.

Irradiated, oxidized olefin polymer coupling agents

Irradiated, oxidized olefin polymer dispersing aids for use in the manufacture of additive concentrates and additive-containing olefin polymer compositions.

Irradiated, oxidized olefin polymer dispersing agents

Graft copolymers are prepared, in a non-oxidizing atmosphere, by (1) irradiating a particulate olefin polymer material with high energy ionizing radiation, (2) treating the irradiated olefin polymer material with at least one grafting monomer that is capable of forming side chains on the olefin polymer material, in the presence of at least one additive to control the molecular weight of the side chains of the polymerized grafting monomer selected from (a) at least one hydroxylamine derivative polymerization inhibitor, and (b) at least one thio-, nitro-, or halogen-substituted aliphatic or aromatic compound or an aliphatic or aromatic phosphine derivative, and (3) deactivating the residual free radicals in the resulting grafted olefin polymer material and removing any unreacted vinyl monomer from the material. Graft copolymers with low molecular weight side chains are produced that are easier to process and have improved internal and surface morphology.

Irradiation process for making olefin graft copolymers with low weight side chains

Graft copolymers with low molecular weight side chains are prepared by (1) irradiating a propylene polymer material in the absence of oxygen, (2) adding a controlled amount of oxygen to the irradiated polymer material so that the polymer is exposed to an amount of oxygen greater than 0.004% but less than 15% by volume at a temperature of 40&deg; C. to 140&deg; C., to produce an oxidized propylene polymer material containing greater than 1 mmol total peroxide per kilogram of propylene polymer material, (3) optionally, heating the oxidized propylene polymer material in a non-oxidizing atmosphere to a temperature of at least 80&deg; C. but below the softening point of the polymer, and (4) treating the oxidized propylene polymer material in a non-oxidizing atmosphere with at least one grafting monomer that is capable of being polymerized by free radicals, in the presence of at least one additive to control the molecular weight of the side chains of the polymerized grafting monomer selected from (a) at least one hydroxylamine derivative polymerization inhibitor, and (b) at least one thio-, nitro-, or halogen-substituted aliphatic or aromatic compound, or an aliphatic or aromatic phosphine derivative, and (5) deactivating the residual free radicals in the resulting grafted propylene polymer material and removing any unreacted vinyl monomer from the material.

Making polyolefin graft copolymers with low molecular weight side chains using a polymeric peroxide as an initiator

Bridged metallocenes, preparation, use in catalytic systems

Growing community of inventors

Bear, DE, United States of America

Vu Anh Dang