Dow Global Technolgoies LLC

Dow Silicones Corporation

Ruth Figueroa

Mehmet Demirors

David D Devore

Jerzy Klosin

Philip P Fontaine

Mridula Babli Kapur

Andrew J Young

Sylvie Y Desjardins

Pulikkottil Jacob Thomas

Susan G Brown

Carl N Iverson

Zach T Rickaway

Endre Szuromi

Tulaza Vaidya

David M Pearson

Robert D J Froese

Hien Q Do

Johnathan E DeLorbe

Roger L Kuhlman

Ravi B Shankar

Daniel J Arriola

Arkady L Krasovskiy

Chunming Zhang

Sean W Ewart

Gordon R Roof

Johnathan E Delorbe

David R Neithamer

Richard J Keaton

Angela I Padilla-Acevedo

Mari S Rosen

Todd D Senecal

Matthew Martin Yonkey

Matthew E Belowich

Bethany M Neilson

Robert David Grigg

Michael Telgenhoff

Mrunmayi Kumbhalkar

Leslie E O'Leary

Susan Brown

Amy E Floeck (nee Duchnowski)

Phillip P Fontaine

Erich Molitor

Robert DJ Froese

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 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

The invention provides a process to form an olefin-based polymer, said process comprising polymerizing at least one olefin in the presence of at least one catalyst system comprising the reaction product of the following: 

Polymerizations for olefin-based polymers

Embodiments are directed to a catalyst system comprising metal ligand complexes and processes for polyolefin polymerization using the metal ligand complex having the following structure: Formula I. 

Germanium-bridged bis-biphenyl-phenoxy catalysts for olefin polymerization

Embodiments are directed to a metal complex formed, wherein the metal complexes are used as pro-catalyst in polyolefin polymerization and comprise the following structure (Formula (I)). 

Silyl-bridged bis-biphenyl-phenoxy catalysts for olefin polymerization

The disclosure provides a polymerization process for producing ethylene based polymers comprising polymerizing ethylene and optionally one or more &#x3b1;-olefins in the presence of a catalyst systems in a reactor system having one or more reactors, wherein the catalyst system comprises; (a) one or more procatalysts comprising a metal-ligand complex of formula (I) below: 

Polymerization process for producing ethylene based polymers

A procatalyst for the polymerization of ethylene and optionally one or more alpha-olefins having the structure shown in formula (I) below. Formula (I) is provided. Also provided is a polymerization process using the inventive procatalyst. 

Procatalyst and polymerization process using the same

The disclosure provides a polymerization process for producing ethylene based polymers comprising polymerizing ethylene and optionally one or more a-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a reactor system having one or more reactors, wherein the first catalyst system comprises; (a) one or more procatalysts comprising a metal-ligand complex of formula (I) below. 

The instant invention provides a procatalyst comprising a metal-ligand complex of Formula (I): (Formula I), wherein M, X, n, each Z, L, R, Rand Rthrough Rare each described herein. 

Catalyst systems for olefin polymerization

The invention provides a process to form an olefin-based polymer, said process comprising polymerizing at least one olefin in the presence of at least one catalyst system comprising the reaction product of the following: A) at least one cocatalyst; and B) a procatalyst comprising a metal-ligand complex of Formula (I), as described herein: (Formula I). 

The invention provides an ethylene-based polymer comprising the following properties: a) a ZSVR value from 1.2 to 2.6, b) a MWD from 1.5 to 2.8, and c) a tan delta (0.1 rad/s; 190 C) from 5.0 to 50.

Ethylene-based polymers

The instant invention provides procatalysts and catalyst systems for olefin polymerization, olefin based polymers polymerized therewith, and process for producing the same. In one embodiment, the instant invention provides a procatalyst comprising a metal-ligand complex of formula (I): 

The instant invention provides a polymerization process for producing ethylene based polymers. In one embodiment, the instant invention provides a polymerization process for producing ethylene based polymers comprising: polymerizing ethylene with optionally one or more &#x3b1;-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a single reactor, wherein first catalyst system comprises; 

A process for preparing an olefin homopolymer or copolymer comprises contacting ethylene, an alpha-olefin, or a combination, and a catalytic amount of a metal-ligand complex catalyst of a particular formula that requires at least one halogen atom that is ortho to a bridging moiety. The strategic location of the halogen atom(s) ensures a product having a molecular weight that is predictably and significantly reduced in comparison with that of copolymers produced using otherwise identical metal-ligand complex catalysts that lack halogen atoms at the specified sites.

Molecular weight control of polyolefins using halogenated bis-phenylphenoxy catalysts

The instant invention provides a polymerization process for producing ethylene based polymers. In one embodiment, the instant invention provides a polymerization process for producing ethylene based polymers comprising: polymerizing ethylene with optionally one or more &#x3b1;-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a dual reactor system or a multiple reactor system, wherein first catalyst system comprises; 

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Midland, MI, United States of America

Ruth Figueroa