Abstract: A method for growing a crystalline composition, the first crystalline composition may include gallium and nitrogen. The crystalline composition may have an infrared absorption peak at about 3175 cm?1, with an absorbance per unit thickness of greater than about 0.01 cm?1. In one embodiment, the composition may have an amount of oxygen present in a concentration of less than about 3×1018 per cubic centimeter, and may be free of two-dimensional planar boundary defects in a determined volume of the first crystalline composition.
Type:
Grant
Filed:
November 9, 2006
Date of Patent:
March 8, 2016
Assignee:
Momentive Performance Materials Inc.
Inventors:
Mark Philip D'Evelyn, Kristi Jean Narang, Dong-Sil Park, Huicong Hong, Xian-An Cao, Larry Qiang Zeng
Abstract: Disclosed herein are epoxy-based compositions that include a polysiloxane flexibilizer and amino-functional alkoxysilane, which provides flexibility, hardness and gloss to such compositions and that are useful as coatings, adhesives, sealants and composites. Also disclosed are cured compositions and substrates coated with such epoxy-based compositions.
Type:
Grant
Filed:
September 12, 2012
Date of Patent:
March 1, 2016
Assignee:
Momentive Performance Materials Inc.
Inventors:
Christian Geismann, Vikram Kumar, Constantine Kondos
Abstract: There is provided new mono-(meth)acrylate functionalized hydrophilic silicone monomers containing a polyether with branched linking group, useful in making water absorbing silicone-hydrogel films for contact lens applications. This invention also provides homo-polymers and copolymers made from the mono-(meth)acrylate functionalized hydrophilic silicone monomers described herein. Also provided is a process for producing the monomers and polymers described herein and contact lenses produced from the same.
Type:
Grant
Filed:
February 18, 2014
Date of Patent:
February 9, 2016
Assignee:
Momentive Performance Materials Inc.
Inventors:
Kendall Louis Guyer, Kenrick Martin Lewis, Senthilkumar Umapathy, Anubhav Saxena, Yi-Feng Wang
Abstract: The present invention is directed to a process for the synthesis of organohalosilane monomers, comprising the steps of (1) forming a slurry of cyclone fines, ultra fines and/or spent contact mass in a thermally stable solvent and reacting the agitated slurry with an organohalide of the formula R1X in the presence of an additive for a time and at a temperature sufficient to produce organohalosilane monomers having the formulae R1SiHX2, R12SiHX, R13SiX, R1SiX3, and R12SiX2; wherein R1 is a saturated or unsaturated aromatic group, a saturated or unsaturated aliphatic group, alkaryl group, or cycloaliphatic hydrocarbyl group, and X is a halogen; and (2) recovering said organohalosilane monomers.
Type:
Grant
Filed:
August 28, 2014
Date of Patent:
February 2, 2016
Assignee:
Momentive Performance Materials Inc.
Inventors:
Kenrick Martin Lewis, Yanjun Zhu, Abellard T. Mereigh, John Razzano, John David Neely
Abstract: The present invention relates to stable, zero or low VOC epoxy-containing polysiloxane oligomer compositions that provide for a high degree of chemical resistance to compositions containing organic resins, while at the same time, maintaining or improving the flexibility of these organic resin-containing compositions, to processes for preparing epoxy-containing polysiloxane oligomer compositions, and to uses in coatings, sealants, adhesives, and composites containing the same.
Type:
Grant
Filed:
April 8, 2014
Date of Patent:
January 26, 2016
Assignee:
Momentive Performance Materials Inc.
Inventors:
Narayana Padmanabha Iyer, Lesley Hwang, Vikram Kumar, Christian Geismann, Constantine Kondos, Shiu-Chin Su
Abstract: There is provided herein a composition comprising the non-covalent bonded reaction product of a hydrophilic polymer containing an acid functional group and a hydrophobic polymer which contains an amine group bound directly to the hydrophobic polymer backbone; and, optionally a diluent, as well as a process of making such a composition.
Abstract: The invention is directed to a process for the preparation of thiocarboxylate silane comprising reacting an aqueous solution of a salt of a thiocarboxylic acid with a haloalkyl silane in the presence of a solid inorganic oxide-supported phase transfer catalyst. The invention is also directed to a process for the preparation of an aqueous solution of a salt of a thiocarboxylic acid which comprises reacting an aqueous solution of a sulfide and/or hydrosulfide with an acid halide in the presence of a said solid catalyst.
Abstract: There is described a release composition including a polyorganosiloxane polymer and a release modifier. The release modifier includes comprising an alkenyl silsesquioxane an organo functional siloxane of the formula MDxM, wherein M represents R3SiO1/2, D represents R2SiO2/2, wherein R is alkyl or alkenyl of 1 to 40 carbon atoms, or hydrogen wherein the organo functional siloxane has a viscosity of from about 5 centipoises to about 80 centipoises and x is from about 5 to about 80, and an optionally a reactive diluent. The release composition includes at least one siloxane cross-linking agent, an inhibitor; and a hydrosilation catalyst.
Abstract: There is provided herein a composition comprising: (A) a silanol and/orhydrocarbon-terminated polyorganosiloxane in an amount of from about 30 weight percent to about 90 weight percent; and, (B) a moisture curable silylated polyurethane resin in an amount of from about 10 weight percent to about 70 weight percent. There is also provided herein in another embodiment a two part sealant composition wherein the first part comprises: (A) a silanol and/or hydrocarbon-terminated polyorganosiloxane in an amount of from about 15 weight percent to about 60 weight percent, (B) a moisture curable silylated polyurethane resin in an amount of from about 2 weight percent to about 32 weight percent, and (C) a filler, said weight percents being based on the weight of the first part.
Type:
Grant
Filed:
March 29, 2010
Date of Patent:
December 1, 2015
Assignee:
Momentive Performance Materials Inc.
Inventors:
Indumathi Ramakrishnan, Shayne Joseph Landon, David A. Williams, Anantharaman Dhanabalan
Abstract: A silicon-containing copolymer which includes zwitterionic linking groups with the general structures —N+(Y?)(Z)— or —N(Z*)— and repeating groups which can be divalent silicone moieties, divalent hydrocarbons or divalent polyethers. The copolymer can be used in personal care products, fertilizers and other agricultural products, pesticides, antifouling agents, and various waterborne coating formulations.
Type:
Grant
Filed:
November 9, 2012
Date of Patent:
December 1, 2015
Assignee:
Momentive Performance Materials Inc.
Inventors:
Monjit Phukan, Anubhav Saxena, Ravikumar Kodagahally, Mark Leatherman
Abstract: The invention is directed to a process for the preparation of thiocarboxylate silane comprising reacting an aqueous solution of a salt of a thiocarboxylic acid with a haloalkylalkoxysilane in the presence of a solid supported catalyst. The invention is also directed to a process for the preparation of an aqueous solution of a salt of a thiocarboxylic acid which comprises reacting an aqueous solution of a sulfide and/or hydrosulfide with a carboxylic acid halide and/or acid anhydride.
Type:
Grant
Filed:
July 9, 2014
Date of Patent:
November 24, 2015
Assignee:
Momentive Performance Materials Inc.
Inventors:
Tiberiu Ladislau Simandan, Andrea Trotto, Ilaria Vecchi, Ottavio Ursitti
Abstract: The current invention provides a method to form a stable blend of polyacrylamide water-in-oil emulsion and breaker surfactants such as silicon polyether copolymer and linear or branched alcohol ethoxylate surfactants. The composition can be employed, for example, as a friction reducing additive for water based fracturing fluid, or a drilling mud additive.
Type:
Application
Filed:
May 16, 2014
Publication date:
November 19, 2015
Applicant:
Momentive Performance Materials Inc.
Inventors:
Mukesh Kumar, Kalman KOCZO, John TERRACINA
Abstract: Moisture-curable compositions are provided which comprises a moisture-curable silylated resin, a flexibilizer and at least one curing catalyst. The cured compositions possess enhanced elongation and tear properties, and are highly suitable for applications such as adhesives, sealants, coatings, gaskets, industrial rubber goods, and the like.
Type:
Grant
Filed:
July 24, 2013
Date of Patent:
October 13, 2015
Assignee:
Momentive Performance Materials Inc.
Inventors:
Thomas Fay-Oy Lim, Vikram Kumar, Martin Wusik
Abstract: A light trapping photovoltaic cell comprising a plurality of cells connected with walls wherein the cells have a plurality of generally straight vertical walls and a bottom region adjacent the generally vertical walls. The bottom region of the cells is pitched toward the center of the bottoms. The light trapping cells provide a structure that allows for improved absorption of incident light. Optionally, a light trapping photovoltaic cell may further comprise a hydrophobic protective layer such as, for example, may be provided by a plurality of nano-sized bumps on the surfaces of the cell walls. Additionally, the cells may exhibit other properties including, for example, deicing, anti-fouling, and self-cleaning.
Abstract: The present invention relates to a process for providing a low-chloride hydrolyzate comprising contacting an acid or base hydrolyzed substrate of a chlorosilane direct process residue with nitric acid to provide a hydrolyzate with a chloride content of less than about 1.8% by weight. The process of present invention is especially useful in cement kilns and smelter operation.
Abstract: A low viscosity filler boron nitride agglomerate particles having a generally spherical shape bound together by an organic binder and to a process for producing a BN powder composition of spherically shaped boron nitride agglomerated particles having a treated surface layer which controls its viscosity.
Type:
Grant
Filed:
June 30, 2011
Date of Patent:
July 14, 2015
Assignee:
Momentive Performance Materials Inc.
Inventors:
David Lodyga, Joseph W. Tereshko, Ajit Sane, Thomas Fox, Paulo Meneghetti
Abstract: The present invention relates to a process for preparing silylated polyurethane polymers which have increased stability under ambient condition or storage toward atmospheric moisture, in the presence of at least one of titanium-containing catalyst or zirconium-containing catalyst and to silylated polyurethane polymer compositions comprising these catalysts.
Abstract: The present invention is directed to a primer composition, comprising: (a) metal oxide nanoparticles surface-modified with an organofunctional silane moiety having a specific functionality, (b) an organic polymer; and (c) one or more solvents; wherein the composition comprises less than 4 wt % of water, based on the total weight of said primer composition. The composition produces films having excellent optical and adhesion characteristics, and excellent weatherability and thermal stability.
Type:
Application
Filed:
December 11, 2013
Publication date:
June 11, 2015
Applicant:
Momentive Performance Materials Inc.
Inventors:
Karthikeyan Murugesan, Indumathi Ramakrishnan, Robert F. Hayes, Keith J. Weller
Abstract: A solid, water-soluble fast-dissolving antidrift composition includes a urea-based complex-forming component (i) complexed with an antidrift component (ii), the antidrift composition optionally further including an adjuvant component (iii).