Dow Global Technolgoies LLC

The Texas A&M University System

David M Pearson

Jerzy Klosin

Rafael Huacuja

David R Wilson

Mari S Rosen

Peter M Margl

Dean M Welsh

Kyoung Moo Koh

Scott D Boelter

Kara A Milbrandt

Todd D Senecal

Sukrit Mukhopadhyay

Philip P Fontaine

Richard J Keaton

William H H Woodward

Liam P Spencer

David D Devore

Linfeng Chen

Edmund M Carnahan

Ruth Figueroa

Kurt Frederick Hirsekorn

Andrew M Camelio

Andrew J Young

Hien Q Do

Jeffrey A Sims

Johnathan E Delorbe

Rhett A Baillie

Roger L Kuhlman

Kim Louis Walton

Mridula Babli Kapur

Shaoguang Feng

Kaitlyn C Gray

Sean W Ewart

Jeffrey C Munro

David R Neithamer

Brad C Bailey

Lixin Sun

Stephanie M Whited

Endre Szuromi

Angela I Padilla-Acevedo

Carl N Iverson

Jing Yan

Andrew T Heitsch

Susan G Brown

Matthew E Belowich

Robert J Wright

Robert David Grigg

Robert Reib

Bethany M Neilson

Johnathan E DeLorbe

Michael J Lesniak

Nolan T McDougal

Jichang Feng

John B Etienne

Roxanne M Jenkins

Michael W Tilston

Mahsa McDougal

David Koenigs

Leslie E O'Leary

Jeffrey C Munro, Jr

Oleg V Ozerov

Susan O Gunther

John R Stutzman

Qingheng Lai

Susan Brown

Nolan T Mcdougal

Tamara L Brennan

Robert N Reib

William HH Woodward

Processes of polymerizing polyolefins and synthesis of activators. The polymerization processes include polymerizing one or more (C-C)α-olefin monomers in the presence of at least one catalyst and at least one co-catalyst to produce a polyolefin. The co-catalyst includes a cation and an anion, in which the anion has a structure having a vinyl terminated alkene, one boron atom or more than one boron atoms, and at least four halogen atoms. The anion of the co-catalysts is incorporated into a polymer chain of the polyolefin.

Alkene functionalized activators and their use in electrical applications

Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts, including a metal-ligand complex having the structure of formula (Ia):

Spray-dried catalysts containing a germanium-bridged bis-biphenyl-phenoxy organometallic compound for making ethylene-based copolymers

Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I):

Transition metal catalysts for olefin polymerization

Processes of polymerizing olefin monomers and catalyst systems. The catalyst systems include a non-hydrogen-generating post-metallocene procatalyst; a co-catalyst; and a hydrogenation procatalyst having the formula CpTiXTiCpor CpTiX, in which each Cp is cyclopentadienyl substituted with at least one (C-C)alkyl; each X is independently monoanionic or neutral, wherein each X is independently (C-C)hydrocarbon, (C-C)heterohydrocarbon, (C-C)hydrocarbyl, (C-C)heterohydrocarbyl, or a halogen atom; and n is 1 or 2.

Polymerization of ethylene in solution processes using a Ziegler-Natta catalyst and a hydrogenation procatalyst

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

Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts, including a metal-ligand complex having the structure of formula (I):

Catalyst systems and processes for producing polyethylene using the same

The catalyst system includes a heterogeneous procatalyst, an electron donor, and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula CpTiXTiCpor CpTiX. In formula CpTiX, each Cp is a cyclopentadienyl substituted with at least one R, wherein Ris (C-C)alkyl; and each X is independently monoanionic or neutral, wherein each X is independently (C-C)hydrocarbon, (C-C)heterohydrocarbon, (C-C)hydrocarbyl, (C-C)heterohydrocarbyl, or a halogen atom.

Polymerization catalysts for production of polyethylene with high molecular weight

The catalyst system includes a heterogeneous procatalyst and a hydrogenation procatalyst. The heterogeneous procatalyst includes a titanium species, an aluminum species, and a magnesium chloride component. The hydrogenation procatalyst has the formula CpTiX, In formula CpTiX, each Cp is a cyclopentadienyl substituted with at least one R, wherein Ris (C-C)alkyl; and each X is independently a halogen atom.

Polymerization of ethylene in solution processes using a Ziegler-Natta catalyst and a hydrogenation catalyst

The polymerization process of this disclosure includes includes polymerizing ethylene and one or more olefins in the presence of a catalyst system under olefin polymerization conditions to form an ethylene-based polymer. The catalyst system comprising a metal-ligand complex according to formula (I).

Heterocycle-heterocycle-based group IV transition metal catalysts for olefin polymerization

Embodiments include activators having a structure according to formula (I).

Anionic group III complexes as weakly coordinating anions for olefin polymerization catalyst activators

The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.

Chromium complex and catalyst therefrom

Process for oligomerization

Embodiments of the disclosure include processes of polymerizing olefins. The process includes contacting ethylene and a (C-C)alpha-olefin comonomer in the presences of a catalyst system. The catalyst system comprises a procatalyst and a bimetallic activator complex. The bimetallic activator complex comprises an anion and a countercation, and the anion has a structure according to formula (I).

Binuclear olefin polymerization activators

Embodiments of this disclosure include processes of polymerizing olefins, the process comprising contacting ethylene and a (C-C)alpha-olefin comonomer in the presence of a catalyst system, the catalyst system comprising a Group IV metal-ligand complex and a metallic activator ionic complex, the metallic activator ionic complex comprising an anion and a countercation, the anion having a structure according to formula (I): 

Olefin polymerization activators

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Lake Jackson, TX, United States of America

David M Pearson