Dow Global Technolgoies LLC

The Dow Chemical Company

Amsa, Inc.

Pulikkottil Jacob Thomas

Jerzy Klosin

Mehmet Demirors

Mridula Babli Kapur

Philip P Fontaine

Ruth Figueroa

Sylvie Y Desjardins

Robert Froese

David A Babb

Zenon Lysenko

Duane R Romer

Aaron W Sanders

Jeffrey Scott Kanel

Alan K Schrock

Matthias Stefan Ober

Donald L Bunning

Brian Michael Roesch

Donald Lee Morrison

Wei-Jun Peng

Joe D Phillips

Kurt D Olson

Christopher W Derstine

John B Etienne

Nermeen W Aboelella

James H Gilchrist

H Ray Jouett

Xiuhua Cui

R Garth Pews

Kevin A Frazier

Robert A Devries

Carl N Iverson

David D Graf

Daniel A Batzel

Wayde V Konze

Anthony P Haag

Donald L Morrison

Robert D Froese

The present invention provides an improved process for preparing DTEA HCl from decene and cysteamine HCl by using a catalyst, solvent and a co-solvent to aid the reaction and provide low temperature stabilization of the resulting product solution.

Process for preparing DTEA HCl

The instant invention provides procatalysts and catalyst systems for olefin polymerization, olefin based polymers polymerized therewith, and process for producing the same. In one embodiment, the instant invention provides a procatalyst comprising a metal-ligand complex of formula (I): 

Catalyst systems for olefin polymerization

The instant invention provides a polymerization process for producing ethylene based polymers. In one embodiment, the instant invention provides a polymerization process for producing ethylene based polymers comprising: polymerizing ethylene with optionally one or more &#x3b1;-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a single reactor, wherein first catalyst system comprises; 

Polymerization process for producing ethylene based polymers

The instant invention provides a polymerization process for producing ethylene based polymers. In one embodiment, the instant invention provides a polymerization process for producing ethylene based polymers comprising: polymerizing ethylene with optionally one or more &#x3b1;-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in a dual reactor system or a multiple reactor system, wherein first catalyst system comprises; 

The instant invention provides procatalysts and catalyst systems for olefin polymerization, olefin based polymers polymerized therewith, and process for producing the same. In one embodiment, the instant invention provides a procatalyst comprising a metal-ligand complex of formula (I). 

The instant invention provides a polymerization process for producing ethylene based polymers. In one embodiment, the instant invention provides a polymerization process for producing ethylene based polymers comprising: polymerizing ethylene with optionally one or more &#x3b1;-olefins in the presence of one or more first catalyst systems and optionally one or more second catalyst systems in in a dual reator system or a multiple reactor system, wherein first catalyst system comprises; 

The present invention generally relates to a process that prepares polyethylenes, poly-&#x3b1;-olefins or poly(co-ethylene-&#x3b1;-olefin) having backbone weight average molecular weights less than 2500 daltons. The process uses a metal-ligand complex as a precatalyst and can be carried out at temperatures ranging from 30&#xb0; C. to 300&#xb0; C. The relatively low molecular weight of the products enables improved viscosity control for a wide variety of applications.

Process for producing low molecular weight ethylene- and alpha-olefin-based materials

A polymer includes repeat units having the structure wherein R, R, Ar, Ar, and Arare defined herein. The polymer can be prepared by Suzuki polycondensation. The acetal and/or ketal functionality in the polymer backbone make the backbone-cleavable in acid. The polymer is useful in applications including lithographic photoresists.

Aromatic polyacetals and articles comprising them

The present invention generally relates to a process that copolymerizes two or more polymerizable olefins, and to cataclyst comprising a metal-ligand complex (precatalyst). The present invention also generally relates to ligands useful for preparing the metal-ligand complex.

Process for polymerizing a polymerizable olefin and catalyst therefor

The present invention generally relates to a process that selectively polymerizes ethylene in the presence of an alpha-olefin, and to a metal-ligand complex (precatalyst) and catalyst useful in such processes, and to related compositions. The present invention also generally relates to ligands and intermediates useful for preparing the metal-ligand complex and to processes of their preparation.

Process for selectively polymerizing ethylene and catalyst therefor

A bis(aryl)acetal has the formula wherein Yand Yare each independently chloro, bromo, iodo, mesylate, tosylate, triflate, or B, provided that Yand Yare not both selected from chloro, bromo, and iodo; each occurrence of Bis independently a boron-containing functional group bonded to Aror Arvia a boron atom; Arand Arare each independently unsubstituted or substituted Carylene, or unsubstituted or substituted Cheteroarylene; provided that Arand Arare not covalently linked to each other to form a ring structure that includes&#x2014;Ar&#x2014;O&#x2014;C&#x2014;O&#x2014;Ar&#x2014;; andRand Rare each independently hydrogen, unsubstituted or substituted Clinear or branched alkyl, unsubstituted or substituted Ccycloalkyl, unsubstituted or substituted Caryl, or unsubstituted or substituted Cheteroaryl. The bis(aryl)acetal is useful as a monomer for oligoacetal and polyacetal synthesis via Suzuki polycondensation.

Bis(aryl)acetal compounds

Metal complexes of polyvalent aryloxyethers appropriately substituted with sterically bulky substituents possess enhanced solubility in aliphatic and cycloaliphatic hydrocarbons and/or when employed as catalyst components for the polymerization of ethylene/&#x3b1;-olefin copolymers, produce products having reduced I/Ivalues.

High temperature polyethylene solution polymerization process

An aldehyde composition derived by hydroformylation of a transesterified seed oil and containing a mixture of formyl-substituted fatty acids or fatty acid esters having the following composition by weight: greater than about 10 to less than about 95 percent monoformyl, greater than about 1 to less than about 65 percent diformyl, and greater than about 0.1 to less than about 10 percent triformyl-substituted fatty acids or fatty acid esters, and having a diformyl to triformyl weight ratio of greater than about 5/1; preferably, greater than about 3 to less than about 20 percent saturates; and preferably, greater than about 1 to less than about 20 percent unsaturates.

Growing community of inventors

Midland, MI, United States of America

Pulikkottil Jacob Thomas