Dow Global Technolgoies LLC

The Dow Chemical Company

Northwestern University

Rohm & Haas Electronic Materials LLC

Bp Chemicals Limited

California Institute of Technology

University of Utah Research Foundation

David R Wilson

Jerzy Klosin

Peter M Margl

Heather Spinney

Sukrit Mukhopadhyay

David M Pearson

Dean M Welsh

Mari S Rosen

Rafael Huacuja

Scott D Boelter

Arjun Raghuraman

Kyoung Moo Koh

Kara A Milbrandt

William Hoy Heath

David D Devore

James C Stevens

Peter N Nickias

Jasson T Patton

Phillip Dene Hustad

Francis J Timmers

Thomas P Clark

Sara B Klamo

Eugene Y Chen

Nahrain E Kamber

Jorge Soto

William Jack Kruper, Jr

Ravi B Shankar

Philip P Fontaine

SonBinh T Nguyen

David R Neithamer

Todd D Senecal

Justin M Notestein

Kevin P Peil

Edmund M Carnahan

Richard E Campbell, Jr

Arkady L Krasovskiy

Robert K Rosen

Richard J Keaton

D Patrick Green

Tulaza Vaidya

Mark F Sonnenschein

Stephen F Hahn

Suzanne M Coley

Wanglin Yu

Juan M Garces

Deidre A Strand

Bruce D Hook

Houxiang Tang

Andrew J Pasztor, Jr

Gregory F Schmidt

Kshitish A Patankar

Bryan D Stubbert

William H H Woodward

Jody J Henning

Richard D Ernst

Thomas P Willumstad

Teresa Plumley Karjala

Duane R Romer

Daniel J Murray

Deepak R Parikh

Chun S Wang

William Gerald Stobby

David J Brennan

Brian W Kolthammer

Young Cheol Bae

Ted A Morgan

Robert D J Froese

Brad C Bailey

Guo-shuh J Lee

William J Kruper

Rajat Duggal

Nathan Wilmot

Chunming Zhang

Lee Spencer

Robert D Mussell

Carl N Iverson

Thomas D Gregory

Jing Jin

Jibin Sun

David D Graf

Brian W S Kolthammer

Ian M Munro

Matthew E Belowich

Mark William Beach

Robert Froese

Matthew Martin Yonkey

Bruce A King

Robert E LaPointe

Philip Howard

Linda J Broadbelt

Inken Beulich

William R Van Volkenburgh

Anteneh Z Worku

Theodor Agapie

Tao Sun

Christopher James Frye

Shaoguang S Feng

Larry Duane Cady

Jamie L Cohen

Mark D Newsham

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

Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I):

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

Bis(phosphino)-phenoxy nickel(II) catalysts for the copolymerization of ethylene and acrylate monomers

Hydroxyl-containing copolymers of butylene oxide and ethylene oxide having a hydroxyl equivalent weight of at least 150, an average of 1.8 to 6 hydroxyl groups per molecule of which hydroxyl groups at least 70% are primary hydroxyl groups and an oxyethylene content of no greater than 10% by weight based on the weight of the copolymer, are useful for making polyurethanes. These polyols are characterized by high reactivity and fast curing times. Polyurethanes made using these polyols have excellent mechanical properties and are highly hydrophobic.

Polyurethane cast elastomers based on poly(butylene oxide) polyols and method for making polyurethane cast elastomers

Polyurethanes are made in a one-shot process from one or more polyols having a hydroxyl equivalent weight of at least 350, wherein at least 50% of the weight of iii) is a hydroxyl-containing polymer of propylene oxide, the hydroxyl-containing polymer of propylene oxide having a hydroxyl equivalent weight of at least 350, an average of 1.8 to 3 hydroxyl groups per molecule of which hydroxyl groups 40 to 70% are primary hydroxyl groups, an oxyethylene content of no greater than 10% by weight based on the weight of the polymer and a polydispersity of 1.175 or less. The polyurethanes exhibit excellent mechanical properties, are highly hygroscopic and cured rapidly.

Polyurethanes and method for making polyurethanes

A method of producing a polyether alcohol that includes feeding an initiator into a reactor, feeding one or more monomers into the reactor, feeding a polymerization catalyst into the reactor, the polymerization catalyst being a Lewis acid catalyst having a general formula M(R)(R)(R)(R), separate from feeding the initiator into the reactor, feeding a hydrogen bond acceptor additive into the reactor, the hydrogen bond acceptor additive being a Cto Corganic molecule having at least two hydroxyl groups, of which two hydroxyl groups are situated in 1,2-, 1,3-, or 1,4-positions on the organic molecule, and allowing the initiator to react with the one or more monomers in the presence of the polymerization catalyst and the hydrogen bond acceptor additive to form a polyether alcohol having a number average molecular weight greater than a number average molecular weight of the initiator.

Lewis acid polymerization catalyst

A method of producing an alcohol ethoxylate surfactant or lubricant, the method including reacting a low molecular weight initiator with ethylene oxide in the presence of a polymerization catalyst, the low molecular weight initiator having a nominal hydroxyl functionality at least 1, and the polymerization catalyst being a Lewis acid catalyst having the general formula M(R)(R)(R)(R), whereas M is boron, aluminum, indium, bismuth or erbium, R, R, R, and Rare each independent, Rincludes a first fluoroalkyl-substituted phenyl group, Rincludes a second fluoroalkyl-substituted phenyl group or a first fluoro/chloro-substituted phenyl group, Rincludes a third fluoroalkyl-substituted phenyl group or a second fluoro/chloro-substituted phenyl group, and optional Rincludes a functional group or functional polymer group, Rbeing different from at least one of Rand R. The method further including forming an alcohol ethoxylate surfactant or lubricant having a number average molecular weight of greater than the number average molecular weight of the low molecular weight initiator in the presence of the Lewis acid catalyst.

Process of manufacturing surfactants and lubricants

A method of producing a polyether polyol includes reacting a low molecular weight initiator with one or more monomers in the presence of a polymerization catalyst, and the low molecular weight initiator has a nominal hydroxyl functionality of at least 2. The one or more monomers includes at least one selected from propylene oxide and butylene oxide. The polymerization catalyst is a Lewis acid catalyst having the general formula M(R)1(R)1(R)1(R)0 or 1, whereas M is boron, aluminum, indium, bismuth or erbium, R, R, R, and Rare each independent, Rincludes a fluoroalkyl-substituted phenyl group, Rincudes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, Rincludes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, and optional Rincludes a functional group or functional polymer group, Rbeing different from at least one of Rand R.

Process of manufacturing polyols

A method of producing a polyether polyol includes reacting a low molecular weight initiator with ethylene oxide in the presence of a polymerization catalyst, and the low molecular weight initiator has a nominal hydroxyl functionality at least 2. The polymerization catalyst is a Lewis acid catalyst having the general formula M(R)(R)(R)(R)0 or 1, whereas M is boron, aluminum, indium, bismuth or erbium, R, R, R, and Rare each independent, Rincludes a fluoroalkyl-substituted phenyl group, Rincudes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, Rincludes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, and optional Rincludes a functional group or functional polymer group, Rbeing different from at least one of Rand R.

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

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

A method of producing a polyether polyol that includes reacting a low molecular weight initiator with one or more monomers in the presence of a polymerization catalyst, the low molecular weight initiator having a number average molecular weight of less than 1,000 g/mol and a nominal hydroxyl functionality at least 2, the one or more monomers including at least one selected from propylene oxide and butylene oxide, and the polymerization catalyst being a Lewis acid catalyst having the general formula M(R)(R)(R)(R). Whereas, M is boron, aluminum, indium, bismuth or erbium, R, R, and Reach includes a same fluoroalkyl-substituted phenyl group, and optional Rincludes a functional group or functional polymer group. The method further includes forming a polyether polyol having a number average molecular weight of greater than the number average molecular weight of the low molecular weight initiator in the presence of the Lewis acid catalyst.

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

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Midland, MI, United States of America

David R Wilson