The Dow Chemical Company

Dow Global Technolgoies LLC

Bp Chemicals Limited

University of Utah Research Foundation

W. R. Grace Co.-conn.

Ineos Europe Limited

Dow Global Michigan Technologies Inc.

David R Neithamer

David D Devore

James C Stevens

Edmund M Carnahan

Peter N Nickias

Francis J Timmers

David R Wilson

Grant B Jacobsen

Richard E Campbell, Jr

Jerzy Klosin

David A Babb

Jasson T Patton

Robert E LaPointe

Roger L Kuhlman

Ravi B Shankar

Robert K Rosen

David M Pearson

Lixin Sun

Richard D Ernst

W Jack Kruper, Jr

Ruth Figueroa

Daryoosh Beigzadeh

Angela I Padilla-Acevedo

Lee Spencer

Robert D Mussell

Mari S Rosen

Michael John Carney

Andrew J Young

Laura J Dietsche

Matthew E Belowich

Keng-Yu Shih

Zhe Zhou

Bethany M Neilson

Jaclyn Murphy

David J Schwartz

Johnathan E Delorbe

Leslie E O'Leary

Susan Brown

Victor A Atiemo-Obeng

Embodiments are directed towards the use of a supported biphenylphenol polymerization catalyst made from a biphenylphenol polymerization precatalyst of Formula I via a gas-phase or slurry-phase polymerization process under gas-phase or slurry-phase polymerization conditions to make a polymer.

Biphenylphenol polymerization catalysts

This invention is a stirrer, impeller or stirrer paddle used for mixing small volumes of liquid in a vessel having a small capacity for liquid, said impeller being characterized by an impeller blade connected to the bottom portion of a support, where the blade has an opening extending through the blade from the front to the back surface of the blade said opening extending across the rotational axis of the impeller. The invention is also an apparatus comprising that blade, a method of mixing components using the apparatus and an array of two or more of the apparatuses.

Stirrer and apparatus for small volume mixing

The present invention provides a chemically-modified support comprising an inorganic oxide containing optionally functionalized hydroxyl groups, having chemically linked thereto the cation of a cation/anion pair. The present invention further provides a supported catalyst system comprising the chemically-modified support as described above, and a transition metal compound of Groups 3-10 (preferably a Group 4 metal compound) containing at least one &#x3c0;-bonded anionic ligand group, said transition metal compound being capable of reacting with the chemically-modified support through the cation of the cation/anion pair to thereby render the transition metal compound catalytically active. The present invention further provides a process for preparing the chemically-modified support of the invention. The present invention further provides an addition polymerization process comprising contacting one or more addition polymerizable monomers with the supported catalyst system of the invention under addition polymerization conditions.

Chemically-modified supports and supported catalyst systems prepared therefrom

A cocatalyst or cocatalyst component, including a compound corresponding to the formula: (A*)(Z*J*),

Expanded anionic compounds comprising hydroxyl or quiescent reactive functionality and catalyst activators therefrom

Supported catalyst compositions use for use in the gas-phase polymerization of one or more &#x3b1;-olefins and methods for making and using the same, the catalyst composition including A) an inert support; B) a Group 4&#x2013;10 metal complex corresponding to the formula:where M is a metal from one of Groups 4 to 10 of the Periodic Table of the Elements in the +2 or +4 formal oxidation state, Cp is a &#x3c0;-bonded anionic ligand group, Z is divalent moiety bound to Cp and bound to M by either covalent or coordinate/covalent bonds and contains boron or a member of Group 14 of the Periodic Table of the Elements, and also nitrogen, phosphorus, sulfur or oxygen, and X is a neutral conjugated diene ligand group having up to 60 atoms, or a dianionic derivative thereof; and C) an ionic cocatalyst capable of converting the metal complex into an active polymerization catalyst represented by the formula:[L*-H][(CF)BCH&#x2014;O&#x2014;MRX],wherein L* is a neutral Lewis base, Mis a metal or metalloid selected from Groups 1&#x2013;14 of the Periodic Table of the Elements, Rindependently each occurrence is a hydrogen or a hydrocarbyl, hydrocarbylsilyl, or hydrocarbysilylhydrocarbyl group having from 1 to 80 nonhydrogen atoms; Xis a halo-substituted hydrocarbyl, hydrocarbylamino-substituted hydrocarbyl, hydrocarbyloxy-substituted hydrocarbyl, hydrocarbylamino, di(hydrocarbyl)amino, hydrocarbyloxy or halide noninterfering group having from 1 to 100 nonhydrogen atoms; x is an integer which ranges from 1 to an integer equal to the valence of M; y is an integer which ranges from 0 to an integer equal to 1 less than the valence of M; and x+y equals the valence of M.

Delayed activity supported olefin polymerization catalyst compositions and method for making and using the same

A gas phase olefin polymerization wherein the catalyst comprises a novel Group 4 transition metal complex containing a boron or aluminum bridging group containing a nitrogen containing group, especially an amido group.

Bridged metal complexes for gas phase polymerizations

Metal complex compounds

Supported catalyst comprising expanded anions

Biscyclopentadienyl, Group 4 transition metal complexes formed with conjugated dienes wherein the diene is bound to the transition metal either in the form of a &sgr;-complex or a &pgr;-complex in combination with strong Lewis acids, Bronsted acid salts, carbenium ion salts, salts containing a cationic oxidizing agent, or subjected to bulk electrolysis in the presence of compatible, inert non-coordinating anions form catalysts for polymerizing olefins, diolefins and/or acetylenically unsaturated monomers.

Biscyclopentadienyl diene complexes

Fluorohydrocarbyl substituted boratabenzene compounds, especially perfluorophenyl substituted boratabenzene compounds, are useful olefin polymerization cocatalysts with metallocenes.

Boratabenzene cocatalyst with metallocene catalyst

Zwitterionic catalyst activator

Boratabenzene cocatalysts, especially novel pentafluorophenyl boratabenzenes, are useful cocatalysts or activators with metallocenes. They are less expensive than prior art activators, are soluble and offer more irreversible reactions. Compositions comprise at least one metallocene catalyst and at least one dihydroboratabenzene or anion thereof. Processes include polymerizations with metallocenes in the presence of a boratabenzene cocatalyst.

Supported catalyst containing tethered cation forming activator

Catalytic derivatives of novel Group 4 metal complexes wherein the metal is in the +2, +3, or +4 formal oxidation state containing two ligand groups bound by .pi.-electrons, at least one of which is a cyclic or noncyclic, non-aromatic, anionic, dienyl ligand group and having a bridged ligand structure, and the use thereof as catalysts for polymerizing addition polymerizable monomers are disclosed.

Metal complexes containing bridged, non-aromatic, anionic, dienyl groups

Growing community of inventors

Midland, MI, United States of America

David R Neithamer