The Dow Chemical Company

Dow Global Technolgoies LLC

Barnes Jewish Hospital

Blue Cube IP LLC

Phillip S Athey

David A Wilson

Druce K Crump

Garry E Kiefer

Samuel A Wickline

Gregory M Lanza

William Aaron Koonce

Nathan Wilmot

Dwight D Latham

Cecile Boyer

Michael K Poindexter

Richard J Keaton

Timothy A Morley

Juan Carlos Medina

Gyongyi Gulyas

Kamesh R Vyakaranam

Harshad M Shah

Venkat S Minnikanti

Ling Zhang

Stephen W King

Michael J Mullins

David A Babb

John N Argyropoulos

Peter N Nickias

Mark F Sonnenschein

Maurice J Marks

R Vernon Snelgrove

William Hoy Heath

Arjun Raghuraman

Paul Foley

Rajat Duggal

Jorge Soto

Harold W Boone

Benjamin L Wendt

Allen S Bulick

Bernard E Obi

Qiuyun Xu

Amarnath Singh

Michael P Tate

Sachit Goyal

Adam C Colson

Nicole Knight

Sara Arshad

Kameswara Vyakaranam

Kameswara R Vyakaranam

Shawn Brown

Steven Montgomery

Brian K Hyduk

Todd W Volz

William Heath

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

The instant invention provides an isocyanate trimerization catalyst system, a precursor formulation, a process for trimerizing isocyanates, rigid foams made therefrom, and a process for making such foams. The trimerization catalyst system comprises: (a) a phosphatrane cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73&#xb0; C. The precursor formulation comprises (1) at least 25 percent by weight of polyol, based on the weight of the precursor formulation; (2) less than 15 percent by weight of a trimerization catalyst system, based on the weight of the precursor formulation, comprising; (a) a phosphatrane cation; and (c) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73&#xb0; C.; and (4) optionally one or more surfactants, one or more flame retardants, water, one or more antioxidants, one or more auxiliary blowing agents, one or more urethane catalysts, one or more auxiliary trimerization catalysts, or combinations thereof. The process for trimerization of isocyanates comprises the steps of: (1) providing one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof; (2) providing a trimerization catalyst system comprising; (a) an phosphatrane cation; and (b) an isocyanate-trimer inducing anion; (c) wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73&#xb0; C.; (3) trimerizing said one or more monomers in the presence of said trimerization catalyst; (4) thereby forming an isocyanurate ring. The process for making the PIR foam comprises the steps of: (1) providing one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof; (2) providing polyol; (3) providing a trimerization catalyst system comprising; (a) a phosphatrane cation; and (b) an isocyanate-trimer inducing anion; wherein said trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73&#xb0; C.; and (4) optionally providing one or more surfactants, one or more flame retardants, water, one or more antioxidants, one or more auxiliary blowing agents, one or more urethane catalysts, one or more auxiliary trimerization catalysts, or combinations thereof; (5) contacting said one or more monomers, and said polyol, and optionally said one or more surfactants, and optionally said one or more flame retardants, and optionally said water, and optionally said one or more antioxidants, and optionally said one or more auxiliary blowing agents in the presence of said trimerization catalyst system and optionally said one or more urethane catalysts, and optionally said one or more auxiliary trimerization catalysts; (6) thereby forming said polyisocyanurate/polyurethane rigid foam. The PIR foam comprises the reaction product of one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof with polyol in the presence of a trimerization catalyst system comprising a phosphatrane cation, and an isocyanate-trimer inducing anion, and optionally one or more surfactants, optionally one or more flame retardants, optionally water, optionally one or more antioxidants, optionally one or more auxiliary blowing agents, optionally one or more additional urethane catalysts, and optionally one or more auxiliary trimerization catalysts, or optionally combinations thereof, wherein the trimerization catalyst system has a trimerization activation temperature in the range of equal to or less than 73&#xb0; C. The PIR foam comprises the reaction product of one or more monomers selected from the group consisting of an isocyanate, a diisocyanate, a triisocyanate, oligomeric isocyanate, a salt of any thereof, and a mixture of any thereof with polyol in the presence of a trimerization catalyst system comprising a phosphatrane cation, and an isocyanate-trimer inducing anion, and optionally one or more surfactants, optionally one or more flame retardants, optionally water, optionally one or more antioxidants, optionally one or more auxiliary blowing agents, optionally one or more additional polyurethane catalysts, and optionally one or more auxiliary trimerization catalysts, or optionally combinations thereof, wherein the PIR foam has a polyisocyanurate trimer ratio (Abs/Abs) of at least 5 at a depth of 12 mm from the rising surface of the rigid foam, measured via ATR-FTIR spectroscopy.

Isocyanate trimerisation catalyst system, a precursor formulation, a process for trimerising isocyanates, rigid polyisocyanurate/polyurethane foams made therefrom, and a process for making such foams

Elastomers are prepared from a reaction mixture that contains a polyene compound, an epoxy resin, a thiol curing agent and a basic catalyst. The polyene compound has an average of at least two groups containing aliphatic carbon-carbon double bonds capable of reaction with a thiol group. At least one of said aliphatic carbon-carbon double bonds is separated from each other said aliphatic carbon-carbon double bond by an aliphatic spacer group having a weight of at least 500 atomic mass units. These elastomers are typically phase-separated materials having good elongation and tensile properties.

Phase-segmented non-isocyanate elastomers

The present invention relates to compositions and methods for reducing or preventing the loss of drilling fluids and other well servicing fluids into a subterranean formation during drilling or construction of boreholes in said formation. Specifically, this invention comprises a curable composition capable of free radical polymerization for creating lost circulation material in-situ. The curable composition comprises an organic compound capable of free radical (co)polymerization represented by the formula (I): wherein x is an integer from 1 to 8; Fp comprises one or more moiety comprising a free radical polymerizable group; L is an organic moiety comprising a (substituted) aromatic or (substituted) aliphatic group comprising one or more O, N, S, or combinations thereof; and Q comprises a substituted or unsubstituted mono- or polyvalent organic radical comprising one or one or more moiety selected from alkyl, alkylene, alkenyl, cycloalkyl, cycloalkylene, aryl, aralkyl, alkaryl, poly(oxyalkylene), poly(carboalkoxyalkylene), a substituted heterocyclic radical, or an unsubstituted heterocyclic radical.

Curable composition for use as lost circulation material

The present invention describes cyclic amine compounds useful for catalysts for polyurethane form-forming compositions. The cyclic amine compounds of the invention provide distinct benefits for reaction compositions, methods, and polyurethane foams based on their desirable physical and catalytic properties.

Cyclic amine compounds, compositions, and polyurethane foams made therefrom

The present invention relates to compositions and methods for reducing or preventing the loss of drilling fluids and other well servicing fluids into a subterranean formation during drilling or construction of boreholes in said formation. Specifically, this invention comprises a curable cross-linkable composition capable of free radical polymerization for creating lost circulation material. The curable cross-linkable composition comprises a mixture of:

Curable cross-linkable compositions for use as lost circulation material

The instant invention provides an isocyanate trimerisation catalyst system, a precursor formulation, a process for trimerising isocyanates, rigid foams made therefrom, and a process for making such foams. A trimerisation catalyst system comprising (a) a phosphonium cation; and (b) an isocyanate-trimer inducing carboxylate anion; wherein said trimerisation catalyst system has a trimerisation activation temperature in the range of equal to or less than 73&#xb0; C. is provided.

A cyclic carbonate monomer including the reaction product of (a) a divinylarene dioxide, and (b) carbon dioxide; a process for making the cyclic carbonate monomer; and a polymer such as a poly(hydroxyurethane) composition made therefrom. The poly(hydroxyurethane) composition made from the above cyclic carbonate monomer forms a reactive intermediate that can be used for making, for example, a poly(hydroxyurethane) foam product.

Cyclic carbonate monomers and polymers prepared therefrom

Embodiments of the invention provide for a polycarbonate polyol including the reaction product of at least one polyol composition and a carbonate. The polycarbonate is one of an amorphous liquid and an amorphous solid at room temperature. The polyol composition includes at least one of a mixture of 1,3-cyclohexanedimethanol and 1,4-cyclohexanedimethanol in a weight ratio from about 60:40 to about 5:95 and a polyol derived from a natural oil fatty acid or natural oil fatty acid methyl ester.

Polycarbonate polyols and polyurethanes made therefrom

Methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule are provided. The method may comprise providing a polymer having at least one unsaturated group and at least one alcohol hydroxyl group in each molecule and having a number average molecular weight between about 100 and about 5,000, adding to the polymer a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out a hydrosilylation reaction to form a composition comprising hydrosilylated polymers, wherein the hydrosilylation reaction has a hydrosilylation efficiency greater than 50% as determined byH-NMR, capping the hydrosilylated polymers by adding the hydrosilylated polymer to at least one isocyanate at an index of between about 100 and about 250, and reacting the isocyanate capped hydrosilylated polymer with a polyol having a nominal functionality of at least 2 to form the composition comprising a crosslinkable silane-terminated polymer.

Process for making low viscosity, fast curing silane terminated polymers

Embodiments of the invention provide for compositions including a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule. The crosslinkable silane-terminated polymer comprises a reaction product of at least a isocyanate capped hydrosilylated polymer and a polyol having a nominal functionality of at least 2 which is at least one of a polycarbonate polyol, a natural oil based polyol, a polyoxyalkyleneamine, a difunctional aromatic amine, a polybutyloxide polyether polyol, and a polytetramethylene glycol.

Silyl-terminated polymers

MRI contrast agents that employ paramagnetic agents and chemical exchange saturation transfer (paraCEST) and which are coupled to targeted particulate delivery vehicles provide sufficient concentration of the paraCEST contrast agents to obtain useful images of target tissues or organs. In addition, the image contrast may be switched on or off with a presaturation radio frequency pulse, avoiding the necessity obtaining pre-injection and post-injection images.

Targeted MR imaging agents

Compounds useful for associating with nanoparticle or microparticle emulsions to obtain magnetic resonance images permit control of the relaxivity of the signal and readily associate with the particulate components.

Chelating agents with lipophilic carriers

Preparation of N-&lsqb;2-(carboxymethoxy) ethyl&rsqb;-N-(carboxymethyl) glycine

Growing community of inventors

Lake Jackson, TX, United States of America

Phillip S Athey