Abstract: An asymmetric siloxane is made by reacting a silicone having the formula MHDxM?H where MH is R1R2HSiO1/2, M?H is R4R5HSiO1/2 and x is an integer 0?x?10 under selective hydrosilylation conditions in the presence of a precious metal hydrosilylation catalyst, with a first olefinic compound and in a second step, a monohydridosiloxane produced in the first step is reacted under hydrosilylating conditions with another olefinic compound different from the first olefinic compound.
Type:
Grant
Filed:
August 14, 2006
Date of Patent:
November 16, 2010
Assignee:
Momentive Performance Materials Inc
Inventors:
David D Farris, Chauncey J Rinard, Mark D Leatherman
Abstract: The present invention relates to novel adhesive-forming compositions of silylated polyurethane prepolymer blended with pre-formed adhesives, and pressure sensitive adhesives containing the same. The silylated polyurethane prepolymer is obtained from the silylation of a polyurethane prepolymer derived from the reaction of polybutadiene polyol and polyisocyanante, where the polybutadiene polyol possesses a primary hydroxyl group content of from about 0.1 to about 2.0 meq/g.
Type:
Grant
Filed:
November 14, 2006
Date of Patent:
November 9, 2010
Assignee:
Momentive Performance Materials Inc.
Inventors:
Roy M. Griswold, Robert L. Frye, Mark J. Bisaillon
Abstract: An asymmetric siloxane is made by reacting a silicone having the formula MHDxM?H where MH is R1R2HSiO1/2, M?H is R4R5HSiO1/2 and x is an integer 0?x?10 under selective hydrosilylation conditions in the presence of a precious metal hydrosilylation catalyst, with a first olefinic compound an in a second step, a monohydridosiloxane produced in the first step is reacted under hydrosilylating conditions with another olefinic compound different from the first olefinic compound.
Type:
Grant
Filed:
August 14, 2006
Date of Patent:
November 9, 2010
Assignee:
Momentive Performance Materials Inc
Inventors:
David D Farris, Chauncey J Rinard, Mark D Leatherman
Abstract: A process is provided for the production of isocyanatosilane from silylorganocarbamate in a cracking zone with a predetermined portion of purged reaction medium undergoing conversion in a trimerization zone to silylisocyanurate.
Abstract: The present invention provides a process for preparing substantially two-dimensional partially crosslinked organo-functional silicone in an aqueous emulsion system. The novel composition provides enhanced surface softness and smoothness to various materials.
Abstract: A method for producing a functionalized silica, compositions and methods for forming curable silicone rubber compositions by using the functionalized silica are also disclosed. Compositions and methods for forming cured silicone resin compositions and products having high transparency, high tensile strength, desirable percent elongation, or a combination of the foregoing properties are also disclosed.
Type:
Grant
Filed:
July 13, 2007
Date of Patent:
September 7, 2010
Assignee:
Momentive Performance Materials Inc.
Inventors:
Abirami Srikanth, Vikram Kumar, Helmut Steinberger, Umapathy Senthilkumar
Abstract: A crystal comprising gallium nitride is disclosed. The crystal has at least one grain having at least one dimension greater than 2.75 mm, a dislocation density less than about 104 cm?2, and is substantially free of tilt boundaries.
Type:
Grant
Filed:
November 13, 2006
Date of Patent:
August 31, 2010
Assignee:
Momentive Performance Materials Inc.
Inventors:
Mark Philip D'Evelyn, Dong-Sil Park, Steven Francis LeBoeuf, Larry Burton Rowland, Kristi Jean Narang, Huicong Hong, Stephen Daley Arthur, Peter Micah Sandvik
Abstract: Sulfur-containing silane and its partially to substantially complete hydrolyzate(s) are useful as additives for filled elastomeric compositions for tires and other cured rubber articles.
Type:
Grant
Filed:
July 31, 2008
Date of Patent:
August 31, 2010
Assignee:
Momentive Performance Materials Inc.
Inventors:
Lesley Hwang, Antonio Chaves, Eric R. Pohl
Abstract: A process for producing a low VOC epoxy silane oligomer which includes hydrolyzing an epoxy silane, the epoxy silane upon hydrolysis of its hydrolyzable sites producing a reduced amount of volatile organic compound compared to that produced by the hydrolysis of a silane possessing an equivalent number of hydrolyzable sites all of which are hydrolyzable alkoxy groups, the hydrolyzing of the epoxy silane being carried out with less than 1.5 equivalents of water, said water being continuously fed during the hydrolysis reaction.
Abstract: This invention relates to moisture-curable resins generally and, more particularly, to two-part moisture-curable resin compositions the first part of which contains a moisture-curable silylated resin and the second part of which contains water. The invention further relates to adhesive, sealant and coating compositions based on such two-part moisture-curable resin compositions.
Abstract: The invention relates to sulfur silane coupling agents containing multiple blocked mercapto groups which are in a state of reduced activity until activated. The coupling agents are advantageously used in rubber formulations, for example, for fabricating tires with low rolling resistance.
Type:
Grant
Filed:
December 28, 2006
Date of Patent:
August 24, 2010
Assignee:
Momentive Performance Materials Inc.
Inventors:
Richard W. Cruse, W. Michael York, Eric R. Pohl, Antonio Chaves, Tiberiu L. Simandan, Prashant Joshi
Abstract: A layered heater structure including an electrode layer and a localized tuning method for tuning the electrode layer of a layered heater structure with high precision is provided. The localized tuning method tunes the electrode layer to its proper local resistance to minimize temperature offsets on the heater surface and thus provide a desired thermal profile that is in marked contrast to conventional, non-localized resistance tuning approaches based on thickness trimming practices, such as grinding or blasting, or resistivity adjustment, such as local heat treatment.
Type:
Grant
Filed:
December 17, 2007
Date of Patent:
August 17, 2010
Assignee:
Momentive Performance Materials Inc.
Inventors:
Wei Fan, Benjamin J. Olechnowicz, Marc Schaepkens, David M. Rusinko, Jr., Xiang Liu, John T. Mariner
Abstract: There is provided silicone gel-forming composition comprising a unique combination of polyorganosiloxane and organohydrogenpolysiloxane, which can produce silicone gel with improved hysteresis.
Abstract: A silane coating composition containing a silicon-based copolymer, a method for treating the surfaces of a metal such as steel, zinc-coated steels, or aluminum, to provide for the formation of a uniform conversion and/or passivation coating which increases the corrosion resistance of bare or painted metal and/or the adhesion properties of the metal, along with a metal having a conversion and/or passivation coating applied thereto are disclosed. Methods of the invention include contacting the requisite metal surface with an aqueous solution of a silane compound and a silicon-based polyether copolymer.
Type:
Application
Filed:
January 8, 2010
Publication date:
July 15, 2010
Applicant:
Momentive Performance Materials Inc.
Inventors:
Christopher M. BYRNE, George Policello, Suresh Rajaraman
Abstract: This invention relates to novel sulfur-containing silane coupling agents, and organic polymers containing carbon-carbon double bonds. These novel silanes can be carried on organic and inorganic fillers. The invention also relates to articles of manufacture, particularly tires, made from the elastomer compositions described herein.
Type:
Application
Filed:
February 16, 2010
Publication date:
July 8, 2010
Applicant:
Momentive Performance Materials Inc.
Inventors:
Richard W. Cruse, W. Michael York, Eric R. Pohl, Antonio Chaves, Prashant Joshi
Abstract: The invention relates to a method for separating emulsions of oil and water, the method comprising incorporating a demulsifying-effective amount of a silicone demulsifier into an emulsion comprising an oil phase and an aqueous phase, the silicone demulsifier having a molecular structure comprising a polysiloxane backbone of at least two siloxane units covalently bound to (i) one or more alkylene oxide groups comprising one or more alkylene oxide units independently having one to five carbon atoms, and (ii) one or more oxirane-containing and/or oxetane-containing groups, wherein said oxirane or oxetane is optionally ring-opened by reaction with a chemical or group capable of ring-opening an oxirane or oxetane ring, respectively, and wherein a solid filler is substantially excluded from the silicone demulsifier and emulsion. The invention also relates to compositions containing the above-described demulsifier and the water and oil phases of an emulsion.
Type:
Grant
Filed:
June 22, 2006
Date of Patent:
June 29, 2010
Assignee:
Momentive Performance Materials Inc.
Inventors:
Kalman Koczo, Sabine Isabelle Azouani, Benjamin Falk
Abstract: A cosmetic composition includes comprising a blend of cycloalkylmethicones comprising at least two different cycloalkylmethicones having general formula I: where R1 is a hydrocarbon radical containing about 2 to about 4 carbon atoms; R2, R3, R4, R5, and R6 are independently selected from the group consisting of a hydrocarbon radical containing about 1 to about 4 carbon atoms; a is a positive number between 0<a<5; b and c are independently selected from 0 to 5 wherein (a+b+c)?5; and wherein the rates of evaporation of the composition as measured in accordance with standard DIN 53249 test is from about 80% to about 99% by weight loss in about 200 to about 6000 minutes, more preferably in about 200 to about 1000 minutes, and even more preferably in about 200 to about 500 minutes.
Abstract: A graphite heater and method of forming a graphite heater comprising a graphite body configured to form an electrical heating circuit for at least one heating zone through the graphite encapsulated in a continuous overcoat layer comprising at least one of a nitride, carbide, carbonitride or oxynitride of elements selected from a group consisting of B, Al, Si, Ga, refractory hard metals, transition metals, and rare earth metals, or complexes and/or combinations thereof, wherein prior to being configured to form the electrical heating circuit path, the graphite body is coated with a layer comprising at least one of a nitride, carbide, carbonitride or oxynitride of elements selected from a group consisting of B, Al, Si, Ga, refractory hard metals, transition metals, and rare earth metals, or complexes and/or combinations thereof.
Abstract: This invention relates to novel free-flowing filler compositions containing silated cyclic core polysulfide coupling agents, and to a rubber containing the filler composition.
Type:
Grant
Filed:
December 28, 2006
Date of Patent:
June 15, 2010
Assignee:
Momentive Performance Materials Inc.
Inventors:
Richard W. Cruse, W. Michael York, Eric R. Pohl, Prashant Joshi