Dow Global Technolgoies LLC

The Dow Chemical Company

Northwestern University

The Texas A&M University System

Other

California Institute of Technology

Dow Silicones Corporation

Symyx Technologies, Inc.

Jerzy Klosin

Ruth Figueroa

Philip P Fontaine

David R Wilson

David M Pearson

Peter M Margl

Mehmet Demirors

Peter N Nickias

Mridula Babli Kapur

Edmund M Carnahan

Brad C Bailey

Sukrit Mukhopadhyay

Ravi B Shankar

Daniel J Arriola

Jasson T Patton

William Jack Kruper, Jr

David D Devore

Francis J Timmers

Brian W Walther

Gordon R Roof

Robert D J Froese

Zenon Lysenko

Richard E Campbell, Jr

Robert K Rosen

Wanglin Yu

Tobin Jay Marks

Gary Michael Diamond

Gregory T Whiteker

James A W Shoemaker

Arkady L Krasovskiy

James M Longmire

Vince J Murphy

David R Neithamer

Lixin Sun

Phillip Dene Hustad

Roger L Kuhlman

Kim Louis Walton

Yi Jin

John Robert Briggs

Timothy Todd Wenzel

Michael Leo Tulchinsky

Steven Swier

Gary Robert Marchand

John Bernard Horstman

Thomas P Clark

Martin R Greaves

Sean W Ewart

Daniel D VanderLende

Jeffrey D Weinhold

Colin LiPiShan

Eugene Y Chen

Kevin A Frazier

William J Kruper

Rafael Huacuja

Mari S Rosen

Dean M Welsh

Kyoung Moo Koh

Pulikkottil Jacob Thomas

Scott D Boelter

Kara A Milbrandt

Andrew J Young

Endre Szuromi

Todd D Senecal

Richard J Keaton

Sylvie Y Desjardins

Carl N Iverson

Susan G Brown

Tulaza Vaidya

William H H Woodward

Chunming Zhang

Matthew D Christianson

Paul R Elowe

Liam P Spencer

Jorge Soto

David D Graf

Ahmad E Madkour

Suh Joon Han

Andrew M Camelio

Xiaohong Bei

Lily Joy Ackerman

Robert Froese

Victor Oswaldo Nava-Salgado

Longyan Liao

Robert David Grigg

Hien Q Do

Thomas H Newman

Heather Spinney

Angela I Padilla-Acevedo

Grant B Jacobsen

Michael D Read

Keran Lu

Xuming Chen

Matthew Martin Yonkey

Matthew E Belowich

Thomas W Karjala

Robert E LaPointe

Zachary Kean

Anna V Davis

Clark R Landis

Ken Kawamoto

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 this disclosure are directed to catalyst systems comprising a metal-ligand complex according to formula (I).

Group III and Lanthanide bis-phenyl-phenoxy metal-ligand complexes

The disclosure are directed to a process for polymerizing ethylene-based polymers. The process includes polymerizing ethylene and optionally one or more (C-C)α-olefin monomer, and at least one diene, in the presence of at least one multi-chain catalyst and at least one single-chain catalyst. The process may include a solvent. The multi-chain catalyst in the process includes a plurality of polymerization sites. Long-chain branched polymers are synthesized by connecting the two polymer chains of the multi-chain catalyst with the diene, the joining of the two polymer chains being performed in a concerted manner during the polymerization. The ethylene-based polymers are produced and include at least two molecular weight polymer fractions. The multi-chain catalyst produces the high molecular weight fraction, which is the long-chain branched polymer.

Process for producing long-chain branched ethylene-based polymers

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

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

Bis(phosphino)-phenoxy nickel(II) catalysts for the copolymerization of ethylene and acrylate monomers

Embodiments of this disclosure are directed to catalyst systems comprising a metal-ligand complex according to formula (I):

Bis-phenyl-phenoxy polyolefin procatalysts having two anthracenyl ligands

Catalyst systems for olefin polymerization include a metal-ligand complex of a general formula (I). The metal-ligand complex of formula (I) is a transition metal complex of titanium, zirconium, or hafnium, in which the transition metal is coordinated with a biaryl phenoxy ligand structure. Olefin polymerization processes include contacting ethylene and optionally one or more (C-C) alpha-olefins in the presence of the catalyst system to produce an ethylene-based polymer or copolymer.

Biaryl phenoxy 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

Catalyst systems that include a chain transfer agent and a metal-ligand complex according to formula (I).

Biaryl hydroxythiophene group IV transition metal polymerization catalysts with chain transfer capability

Embodiments are directed to catalyst systems comprising: a procatalyst; and a co-catalyst dissolved in a non-halogenated aprotic hydrocarbon solvent, the co-catalyst comprising: a non-coordinating borate dianion having the formula: (III) and two cations, each cation being independently chosen from a cation according to formula (I) or formula (II).

Highly soluble bis-borate as binuclear co-catalysts for olefin polymerization

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

Embodiments are directed to catalyst systems comprising: a procatalyst; and a co-catalyst, the co-catalyst comprising: a non-coordinating borate anion having the formula [B(CF)]and a cation according to formula (I).

Highly soluble alkyl substituted carbenium borate as co-catalysts for olefin polymerizations

Process for oligomerization

The present disclosure relates to a capped dual-headed organoaluminum composition having the formula (I) and processes to prepare the same. In at least one aspect, the capped dual-headed organoaluminum compositions can be used in olefin polymerization.

Capped dual-headed organoaluminum compositions

Disclosed are catalyst systems comprising the reaction product of at least the following:  

Catalyst systems comprising carborane cocatalysts

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Midland, MI, United States of America

Jerzy Klosin