Dow Global Technolgoies LLC

Dow Global Technology Inc.

Andrew M Camelio

Robert D J Froese

Brad C Bailey

Matthew D Christianson

David D Devore

Sukrit Mukhopadhyay

Arkady L Krasovskiy

Endre Szuromi

Jerzy Klosin

Philip P Fontaine

David M Pearson

Jessica L Klinkenberg

Hien Q Do

Rhett A Baillie

John Robert Briggs

Heather Spinney

Todd D Senecal

Robert Froese

Anna V Davis

Robert David Grigg

Johnathan E DeLorbe

Siyu Tu

Jordan Reddel

John B Etienne

Johnathan E Delorbe

Tomas D Paine

Amaruka Hazari

Jordan C Reddel

Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts, including a metal-ligand complex having the structure of formula (Ia):

Spray-dried catalysts containing a germanium-bridged bis-biphenyl-phenoxy organometallic compound for making ethylene-based copolymers

Embodiments of the present application are directed to procatalysts, and catalyst systems including procatalysts, including a metal-ligand complex having the structure of formula (I):

Catalyst systems and processes for producing polyethylene using the same

Embodiments of this disclosure include polymerization processes that include contacting propylene and/or one or more (C4-C12)α-olefins in a reactor including a catalyst system. The catalyst system comprises a metal-ligand complex according to formula (I).

Biaryl hydroxythiophene group IV transition metal polymerization with chain transfer capability

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

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

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 aminopyridine group IV transition metal olefin copolymerization catalysts with ultra-high molecular weight capability and ultra-low comonomer incorporation

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) 

A method for forming 1,3,5,7-tetraalkyl-6-(2,4-dimethoxyphenyl)-2,4,8-trioxa-6-phosphaadamantane includes obtaining a solution comprising an ethereal solvent and an aluminum hydride, adding dichloro(2,4-dimethoxyphenyl)phosphine to the solution to produce 2,4-dimethoxyphenylphosphine, and reacting the 2,4-dimethoxyphenylphosphine with an acidic mixture comprising diones to produce 1,3,5,7-tetraalkyl-6-(2,4-dimethoxyphenyl)-2,4,8-trioxa-6-phosphaadamantane. The solution has a temperature from IN greater than &#x2212;20 C. to 50 C. throughout the method. Another method for forming 1,3,5,7-tetraalkyl-6-(2,4-dimethoxyphenyl)-2,4,8-tri-oxa-6-phosphaadamantane includes obtaining dichloro(2,4-dimethoxyphenyl)phosphine, forming 2,4-dimethoxyphenylphosphine by adding the dichloro(2,4-dimethoxyphenyl)phosphine to a solution comprising at least one solvent and an aluminum hydride, reacting the 2,4-dimethoxyphenylphosphine with a mixture to produce 1,3,5,7-tetraalkyl-6-(2,4-dimethoxyphenyl)-2,4,8-trioxa-6-phosphaadamantane. The mixture includes an acid selected from the group consisting of Lewis acids, sulfonic Bronsted acids, and mixtures thereof, an aromatic or non-aromatic hydrocarbons; and acetylacetone.

Methods for forming 1,3,5,7-tetraalkyl-6-(2,4-dimethoxyphenyl)-2,4,8-trioxa-6-phosphaadamantane

Biaryl phenoxy group iv transition metal catalysts for olefin polymerization

The present disclosure describes a method of synthesizing carbodiimides comprising providing an alkylisothiourea, providing a thiophilic reagent to the reaction mixture and reacting under conditions sufficient to provide the carbodiimide, and wherein the carbodiimide is a polycarbodiimide or a biscarbodiimide. The present disclosure further describes methods for isolating the carbodiimides. The present disclosure additionally describes isolated carbodiimide compositions.

Biscarbodiimides and polycarbodiimides and method for their preparation

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

Embodiments are directed to bis- and poly-phosphaguanidine compounds, and the metal-ligand complexes formed therefrom, wherein the metal complexes can be used as procatalysts in polyolefin polymerization. Formulas (I) (II) and (III). 

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Midland, MI, United States of America

Andrew M Camelio