Dow Global Technolgoies LLC

Dow Agrosciences LLC

Dow Global Technology Inc.

Dow Global Technoloiges LLC

Robert D J Froese

Andrew M Camelio

Matthew D Christianson

David D Devore

Daniel J Arriola

Endre Szuromi

Jerzy Klosin

Brad C Bailey

Teresita Kashyap

Timothy Todd Wenzel

Sukrit Mukhopadhyay

Arkady L Krasovskiy

Phillip Dene Hustad

Roger L Kuhlman

Cornelis F J Den Doelder

Lixin Sun

Ruth Figueroa

Heather Spinney

Robert L Sammler

Joseph N Coalter, Iii

Bryan D Stubbert

David R Wilson

Gregory T Whiteker

James M Renga

Yuanming Zhu

Duane R Romer

Shaoguang Feng

Andreas Lutz

Jasson T Patton

Gary Lee Jialanella

Kim Eric Arndt

Gordon R Roof

Matthias Stefan Ober

Kevin A Frazier

Dean M Welsh

Yan Fei Liu

Glenn G Eagle

Todd D Senecal

Keran Lu

Eric E Cole

Jessica L Klinkenberg

Anna V Davis

Timothy De Vries

Curt N Theriault

Oscar David Redwine

Michael R Golden

Ming Ming

Alex J Nett

Amaruka Hazari

Paul H Moran

Alejandro J Garza Gonzalez

Joseph S Renny

Heather A Spinney

Joseph N Iii Coalter

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

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

Processes for polymerizing polyolefins include contacting ethylene and optionally one or more (C-C)α-olefin in the presence of a catalyst system, wherein the catalyst system comprises a metal-ligand complex having a structure according to formula (I).

Monobidentate, bis-bidentate, and tetrabidentate guanidine Group IV transition metal olefin copolymerization catalysts

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

The present process embodiments for synthesizing long-chain branched copolymers include contacting together one or more C-Calkene monomers, at least one diene or polyene, optionally a solvent, and a multi-chain catalyst. The multi-chain catalyst includes a plurality of polymerization sites and produces at least two polymer chains of the C-Calkene monomers, each polymer chain polymerizing at one of the polymerization sites. The process synthesizes the long-chain branched polymers by connecting the two polymer chains with the diene or polyene, the joining of the two polymer chains being performed in a concerted manner during the polymerization.

Process of polymerizing tetra-functional long-chain branched polyolefin resins

Embodiments of this disclosure include polymers comprising the polymerized product of ethylene, at least one diene comonomer, and optionally at least one Cto Ccomonomer. The polymer comprises tri-functional long-chain branches resulting from the diene that occur at a frequency of at least 0.03 per 1000 carbon atoms of the polymer. The diene has a structure according to formula (I):

Tri-functional long-chain branched polyolefin

Embodiments of this disclosure are directed to ethylene-based polymers. The ethylene-based polymer are polymerized units derived from ethylene, diene, and optionally, one or more C3-C12 α-olefins. The ethylene-based polymer includes a melt viscosity ratio (V0.1/V100) at 190 C greater than 20. The V0.1 is the viscosity of the ethylene-based polymer at 190 C at a frequency of 0.1 radians/second, and the V100 is the viscosity of the ethylene-based polymer at 190 C at a frequency of 100 radians/second. Additionally, the ethylene-based polymer includes an average g greater than 0.86, where the average g′ is an intrinsic viscosity ratio determined by gel permeation chromatography using a triple detector.

Long-chain branched ethylene-based polymers

Ethylene-based polymers of this disclosure include an average g′ less than 0.86, where the average g′ is an intrinsic viscosity ratio determined by gel permeation chromatography using a triple detector; and a molecular weight tail quantified by an MWD area metric, A, and Ais less than or equal to 0.04 as determined by gel permeation chromatography using a triple detector.

Tetra-functional long-chain branched ethylene-based polymers

Ethylene-based polymers of this disclosure include a melt viscosity ratio (V/V) at 190° C. of at least 10, where Vis the viscosity of the ethylene-based polymer at 190° C. at a shear rate of 0.1 radians/second, and Vis the viscosity of the ethylene-based polymer at 190° C. at a shear rate of 100 radians/second; and a molecular weight tail quantified by an MWD area metric, A, and Ais less than or equal to 0.04 as determined by gel permeation chromatography using a triple detector.

Ethylene-based polymers comprise reaction products of polymerizing ethylene monomer, at least one diene or polyene comonomer, and optionally at least one Cto Ccomonomer under defined polymerization reaction conditions, the ethylene-based polymer having: an M/Mgreater than 1.20. The Mis the initial weight-average molecular weight of a comparative ethylene-based polymer by gel permeation chromatography. The comparative ethylene-based polymer being a reaction product of polymerizing ethylene monomer and all Cto Ccomonomers present in the ethylene-based polymer, if any, without the at least one polyene comonomer, under the defined polymerization reaction conditions; and a molecular weight tail quantified by an MWD area metric, A, and Ais less than or equal to 0.04 as determined by gel permeation chromatography using a triple detector.

Embodiments are directed to monophosphaguanidine ligands and the bis ligated metal-complexes formed therefrom, wherein the metal-ligand complexes are polymerization catalysts comprising the following structure (I). 

Bis-ligated phosphaguanidine group IV metal complexes and olefin polymerization catalysts produced therefrom

Embodiments are directed to catalyst systems comprising at least one metal ligand complex and to processes for polyolefin polymerization incorporating the catalyst systems. The metal ligand complexes have the following structures: (I) 

Biaryl phenoxy group iv transition metal catalysts for olefin polymerization

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: 

Embodiments are directed to phosphaguanidine metal complexes of formula I and using those complexes in &#x3b1;-olefin polymerization systems. 

Phosphaguanidine group IV metal olefin polymerization catalysts

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Midland, MI, United States of America

Robert D J Froese