Dow Global Technolgoies LLC

Northwestern University

Dow Silicones Corporation

Arjun Raghuraman

David D Devore

Sukrit Mukhopadhyay

Heather Spinney

David R Wilson

William Hoy Heath

Juan Carlos Medina

SonBinh T Nguyen

Justin M Notestein

Sachit Goyal

Kaoru Aou

Marc-Andre Courtemanche

David Wilson

Manjiri R Paradkar

Mark F Sonnenschein

Wanglin Yu

David Laitar

Bruce D Hook

Kshitish A Patankar

Thomas P Willumstad

Jody J Henning

Travis Sunderland

Anthony P Gies

Anne-Catherine Bedard

David A Babb

Lenin J Petroff

Phillip S Athey

Jean-Paul Masy

William Aaron Koonce

H Robert Goltz

Marinus A Bigi

Yasmin N Srivastava

Harshad M Shah

Matthew E Belowich

Amber Marie Stephenson

Mikhail Y Gelfer

Fabio Aguirre Vargas

Venkat S Minnikanti

Mark W Brown, Ii

Linda J Broadbelt

James W Young, Jr

Avery L Watkins

Jordan Reddel

Matthias Schaefer

Praveen Agarwal

Armin Hassanzadeh

Andrew B Shah

Mark R Whelan

David A Reuschle

Mihir Bhagat

Youlong Zhu

Charmaine Bennett

Anne-Catherine Bédard

Shuqi Lai

Ann F Johnson

William L Heaner

David S Laitar

Heather A Spinney

A composition includes a silyl hydride (having at least one silicon-bonded hydrogen atom per molecule) and a fluorinated triarylborane Lewis acid. In the method, the Lewis acid catalyzes reaction of silicon bonded hydrogen atoms from the silyl hydride and water, thereby forming a siloxane bond in the resulting product. The composition and method can be used to form siloxane intermediates and cured networks.

Composition and method for silyl hydride reaction catalyzed by fluorinated arylborane Lewis acids

A polyfunctional organohydrogensiloxane is prepared using a fluorinated triarylborane Lewis acid as catalyst. The polyfunctional organohydrogensiloxane may be formulated into release coating compositions. Alternatively, the polyfunctional organohydrogensiloxane may be further functionalized with a curable group to form a clustered functional organosiloxane. The clustered functional organosiloxane may be formulated into thermal radical cure adhesive compositions.

Methods for making polyfunctional organosiloxanes and compositions containing same

A composition and method can be used in the preparation of various siloxanes. The composition and method employ a fluorinated triarylborane Lewis acid, a hydrocarbonoxy-functional organosilicon compound, and a silyl hydride. The fluorinated triarylborane Lewis acid catalyzes reaction of a hydrocarbonoxy moiety (from the organosilicon compound) and a silicon-bonded hydrogen atom (from the silyl hydride) to form a siloxane bond.

Composition and method for reacting an organosilicon compound and a silyl hydride catalyzed by a fluorinated arylborane Lewis acid

A process for purifying a polyether polyol including treating the polyether polyol with a mixture of: (i) a sulfonic acid catalyst, wherein the catalyst includes a substituted or unsubstituted alkyl group of at least 6 carbon atoms, and (ii) water to reduce residual levels of acetal linkages present in the polyether polyol; a purified polyether polyol prepared using the above treatment process; and a polyurethane product prepared by reacting the above purified polyether polyol and an isocyanate.

Process for purifying polyether polyols

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

A coated article comprises an article, and one or more amide based coatings on an outer surface of the proppant particle, the amide based coating include the reaction product of an isocyanate component that includes at least one isocyanate and a carboxylic acid component that includes one or more poly-carboxylic acids.

Amide based coating

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.

A continuous process for forming a coated proppant, said process comprising the steps of: (a) washing particles, (b) drying the particles at a first predetermined temperature, (c) cooling the particles, (d) feeding the cooled particles with a second predetermined temperature lower than the first predetermined temperature to an inlet of a combined continuous mixer and conveyor unit, (e) feeding a coating composition into the combined continuous mixer and conveyor unit, (f) mixing and simultaneously conveying the particles and the coating composition for a predetermined time, (g) curing the coating composition by transfer of heat from the particles, (h) discharging the coated particles from an outlet of the combined continuous mixer and conveyor unit, wherein said process does not comprise a step of heating the particles after the drying.

In line, continuous proppant coating method

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.

A method of producing a polyether polyol that includes reacting a low molecular weight initiator with ethylene oxide 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, and the polymerization catalyst being 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, and Reach includes a same fluoroalkyl-substituted phenyl group, and optional Rincludes a functional group or functional polymer group. R, R, and Rare the same fluoroalkyl-substituted phenyl 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.

A method of producing an alcohol ethoxylate surfactant or lubricant includes 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)1(R)1(R)1(R), whereas M is boron, aluminum, indium, bismuth or erbium, R, Rand Reach includes a same fluoroalkyl-substituted phenyl group, and optional Rincludes a functional group or functional polymer group. R, R, and Rare the same fluoroalkyl-substituted phenyl group. The method further includes forming the 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.

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Pearland, TX, United States of America

Arjun Raghuraman