Abstract: 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(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, aluminum, indium, bismuth or erbium, R1, R2, R3, and R4 are each independent, R1 includes a fluoroalkyl-substituted phenyl group, R2 incudes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, R3 includes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, and optional R4 includes a functional group or functional polymer group, R1 being different from at least one of R2 and R3.

Abstract: 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(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, aluminum, indium, bismuth or erbium, R1, R2, R3, and R4 are each independent, R1 includes a fluoroalkyl-substituted phenyl group, R2 incudes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, R3 includes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, and optional R4 includes a functional group or functional polymer group, R1 being different from at least one of R2 and R3.

Abstract: Embodiments relate to a coating, adhesive, sealant, elastomer, or reaction injection molded material forming polyurethane composition that comprises an isocyanate component that includes at least one isocyanate-terminated prepolymer, and an isocyanate reactive component that includes at least one Lewis acid catalyst polymerized polyether polyol having a weight average molecular weight from 200 g/mol to 1,000 g/mol, an average primary hydroxyl group content of at least 30%, and an average acetal content of at least 0.05 wt %.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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(R1)1(R2)1(R3)1(R4)0 or 1. Whereas, M is boron, aluminum, indium, bismuth or erbium, R1, R2, and R3 each includes a same fluoroalkyl-substituted phenyl group, and optional R4 includes 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.

Abstract: 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(R1)1(R2)1(R3)1(R4)0 or 1, separate from feeding the initiator into the reactor, feeding a hydrogen bond acceptor additive into the reactor, the hydrogen bond acceptor additive being a C2 to C20 organic 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Coated proppant particles are prepared from a coating composition that includes at least one polyisocyanate and an isocyanate trimerization catalyst. The coating composition preferably is devoid of an effective amount of a urethane, urea and carbodiimide catalyst. The coating composition cures rapidly at moderate temperatures, and bonds to itself well under conditions of heat and pressure as are experienced by the particles in subterranean formations.

Abstract: 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(R1)1(R2)1(R3)1(R4)0 or 1. Whereas, M is boron, aluminum, indium, bismuth or erbium, R1, R2, and R3 each includes a same fluoroalkyl-substituted phenyl group, and optional R4 includes a functional group or functional polymer group. R1, R2, and R3 are 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.

Abstract: 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(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, aluminum, indium, bismuth or erbium, R1, R2 and R3 each includes a same fluoroalkyl-substituted phenyl group, and optional R4 includes a functional group or functional polymer group. R1, R2, and R3 are 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.

Abstract: A polymer concrete composition has a base composition including a first isocyanate component and a first isocyanate reactive component, and one or more pre-coated aggregates that each has a base substrate and a two-component reaction product polymeric coating on an outer surface of the base substrate. The polymeric coating is the reaction product of a second isocyanate component and a second isocyanate-reactive component.

Abstract: A Lewis acid polymerization catalyst has a general formula M(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, R1, R2, R3, and R4 are each independent, R1 is a 3,5-bis(trifluoromethyl)-substituted phenyl group, R2 is the 3,5-bis(trifluoromethyl)-substituted phenyl group or a first fluoro-substituted phenyl group selected from Set 1 structures, R3 is independently a second fluoro-substituted phenyl group selected from the Set 1 structures, and optional R4 includes a third functional group or functional polymer group.

Abstract: 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(R1)1(R2)1(R3)1(R4)0 or 1. Whereas, M is boron, aluminum, indium, bismuth or erbium, R1, R2, and R3 each includes a same fluoroalkyl-substituted phenyl group, and optional R4 includes a functional group or functional polymer group. R1, R2, and R3 are 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.

Abstract: A coated article, such as a proppant, includes a base substrate and one or more polyurethane based coatings on an outer surface of the base substrate. The one or more polyurethane based coatings including the reaction product of an isocyanate component that has at least one isocyanate and an isocyanate-reactive component that has one or more simple polyols and one or more polyether monols at a ratio from 1:18 to 18:1. An isocyanate index is greater than 0.2 and less than 1.0.