Dow Global Technolgoies LLC

The Texas A&M University System

Todd D Senecal

Tao Wang

Jerzy Klosin

David M Pearson

Sukrit Mukhopadhyay

David R Wilson

William H H Woodward

David D Devore

Hongyu Chen

Richard J Keaton

Rafael Huacuja

Jasson T Patton

Daniel J Arriola

Gordon R Roof

Brad C Bailey

Heather Spinney

Matthew D Christianson

Anna V Davis

Alex J Nett

Philip P Fontaine

Robert D J Froese

Ruth Figueroa

Andrew M Camelio

Robert Froese

Robert David Grigg

Zachary Kean

Johnathan E Delorbe

Evelyn Auyeung

Alejandro J Garza Gonzalez

Jordan Reddel

John B Etienne

Roxanne M Jenkins

Rhett A Baillie

Oleg V Ozerov

Sudipta Pal

Qingheng Lai

John R Stutzman

Susan O Gunther

Heather A Spinney

Jordan C Reddel

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 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

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 using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I).

Sterically hindered phosphine-amide supported nickel (II) or palladium (II) catalysts for the copolymerization of ethylene and polar comonomers

Sterically hindered phosphino-urea supported nickel (II) or palladium (II) catalysts for the copolymerization of ethylene and polar comonomers

Processes of polymerizing olefin monomers using catalyst systems comprising a procatalyst having a structure according to Formula (I).

Olefin polymerization catalysts bearing a thiazole or imidazole

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

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

The present disclosure relates to an olefin polymerization 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 catalyst system comprises: (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, and (C) a chain shuttling agent.

Catalyst system for multi-block copolymer formation

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

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 an ionic metallic activator complex, the ionic metallic activator complex comprising an anion and a countercation, the anion having a structure according to formula (I):formula (I) 

The present disclosure relates to an olefin polymerization 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, and (C) a chain shuttling agent.

Catalyst system for multi-block coploymer formation

A process for producing a polyolefin comprising contacting one or more olefinic monomers in the presence of one or more catalysts, wherein one or more of the catalysts has the following structure: wherein M is a Group III or Lanthanide metal that is in a +3 formal oxidation state and wherein the contacting occurs in the absence of any activator is provided. 

Process for producing a polyolefin

A metal-ligand complex has formula (I): wherein J, L, M, R, R, R, R, X, p, q, and r are defined herein. The metal-ligand complex is useful as a catalyst or catalyst precursor for olefin polymerization. 

Metal-ligand complex, olefin polymerization catalyst derived therefrom, and olefin polymerization method utilizing the catalyst

Growing community of inventors

Midland, MI, United States of America

Todd D Senecal