Dow Global Technolgoies LLC

Northwestern University

Andrew J Young

Jerzy Klosin

Philip P Fontaine

Susan G Brown

Zach T Rickaway

Edmund M Carnahan

Carl N Iverson

Hien Q Do

Mehmet Demirors

Mridula Babli Kapur

Tobin Jay Marks

David D Devore

Ruth Figueroa

Chunming Zhang

Matthew D Christianson

Tulaza Vaidya

Johnathan E DeLorbe

Roger L Kuhlman

John Francis Szul

Daniel J Arriola

Jeffrey C Munro

Gordon R Roof

Endre Szuromi

David M Pearson

Angela I Padilla-Acevedo

Tracy L Lohr

Yanshan Gao

David R Neithamer

Brad C Bailey

Mari S Rosen

Matthew E Belowich

Bethany M Neilson

Johnathan E Delorbe

Leslie E O'Leary

Arvind Jaganathan

Jeffrey C Munro, Jr

Susan Brown

Amy E Floeck (nee Duchnowski)

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 provide bimodal polymerization catalyst systems comprising metallocene olefin polymerization catalysts and biphenylphenol polymerization catalysts made from biphenylphenol polymerization precatalysts of Formula I.

Bimodal catalyst systems

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

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

The present disclosure relates to a catalyst system for use in forming a multi-block copolymer, said copolymer containing therein two or more segments or blocks differing in chemical or physical properties, a polymerization process using the same, and the resulting polymers, wherein the composition comprises the admixture or reaction product resulting from combining: (A) a first olefin polymerization procatalyst, (B) a second olefin polymerization procatalyst capable of preparing polymers differing in chemical or physical properties from the polymer prepared by procatalyst (A) under equivalent polymerization conditions, (C) an activator, and (D) a chain shuttling agent.

Catalyst system for multi-block copolymer formation

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 procatalyst for the polymerization of ethylene and optionally one or more alpha-olefins having the structure shown in formula (I) below: wherein at least two of Y-Yand at least two of Y-Yare fluorine atoms and when only two of Y-Yand only two of Y-Yare fluorine atoms, the non-fluorine Y-Yare selected from the group consisting of H atom, alkyl groups, aryl groups, heteroaryl groups, and alkoxy groups. Also provided is a polymerization process using the procatalyst.

Polymerization process for producing ethylene based polymers

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 instant invention provides a polyolefin composition and method of producing the same. The olefin polymerization process according to the present invention comprises contacting one or more olefinic monomers with a biphenylphenolic polymerization catalyst under polymerization conditions and in the presence of one or more treated aluminum-based scavengers in a polymerization reactor, wherein said one or more treated aluminum-based scavengers comprise the reaction product of an alkylaluminum or an aluminoxane specie with a compound of the general Formula (I): wherein X is O, N, or S and R is alkyl, aryl, heteroalkyl, heteroaryl, or hydrogen, wherein n=1 if X is O or S and n=1 if X is N, and wherein at least one R is not a hydrogen; R&#x2014;X&#x2014;H (I); thereby producing a polyolefin composition which comprises less than 50% of the oligomer level of a polyolefin composition produced in an olefin polymerization process in the presence of said one or more untreated aluminum-based scavengers.

Polyolefin composition and method of producing the same

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

Growing community of inventors

Houston, TX, United States of America

Andrew J Young