Dow Global Technolgoies LLC

The University of Texas System

Rafael Huacuja

Jerzy Klosin

David M Pearson

David R Wilson

Peter M Margl

Dean M Welsh

Kyoung Moo Koh

Mari S Rosen

Scott D Boelter

Kara A Milbrandt

Todd D Senecal

Sukrit Mukhopadhyay

Richard J Keaton

William H H Woodward

Philip P Fontaine

Brad C Bailey

Robert David Grigg

Evelyn Auyeung

Johnathan E Delorbe

Rhett A Baillie

Oleg V Ozerov

Jessica De Mott

Sudipta Pal

William HH Woodward

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

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

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

The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.

Chromium complex and catalyst therefrom

Process for oligomerization

Disclosed are catalyst systems comprising the reaction product of at least the following:  

Catalyst systems comprising carborane cocatalysts

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 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) 

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): 

Phosphacycle compound and process for production thereof

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Freeport, TX, United States of America

Rafael Huacuja