Abstract: A process and composition for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl hydride with (b) an unsaturated compound in the presence of (c) a platinum compound and (d) a cyclodiene, with the proviso that when the unsaturated compound is a terminal alkyne, the silyl hydride is other than a halosilane. The process and composition optionally comprise an inhibitor (e). The process and composition may be employed to form a variety of hydrosilylation products.
Abstract: A crosslinked polyorganosiloxane is obtained from the free radical-initiated addition polymerization of polymerizable polyorganosiloxane containing at least two free radical polymerizable groups.
Type:
Grant
Filed:
June 7, 2016
Date of Patent:
December 24, 2019
Assignee:
Momentive Performance Materials Inc.
Inventors:
Zhimin Xing, Yun Huang, Sigfredo Gonzalez, Benjamin Falk, Anne Dussaud
Abstract: The present invention relates to an addition-curable silicone rubber composition having self-bonding capability. The addition-curable silicone rubber composition exhibits self-bonding capability in particular to substrates that contain residual hydroxyl groups or other residual hydrosilyl-reacting groups on their surface, including polycarbonate, polyester, polyamide, polysulfone, polyurethane, phenolic resin, epoxy resin, cellulose, glass and the mixture thereof.
Type:
Application
Filed:
December 20, 2017
Publication date:
December 12, 2019
Applicant:
Momentive Performance Materials Inc.
Inventors:
Huiping ZHANG, Srividhya MARIMUTHU, Gunnar HOFFMUELLER, John Mitchell HUGGINS, Enise MICHALSKI
Abstract: There is provided herein an opaque one-part room temperature vulcanizing silicone polymer composition comprising: (a) a silanol-terminated diorganopolysiloxane, (b) an opaque reinforcing filler; (c) a polyalkoxysilane crosslinking agent; (d) a condensation cure catalyst; (e) an organo-functional alkoxy silane adhesion promoter; and, (f) a cyclic siloxane. There is also provided a method for the continuous production of such a silicone polymer composition, and a paint containing such a silicone polymer composition.
Abstract: A crosslinkable silicone based emulsion composition includes a hydroxylated polydiorganopolysiloxane grafted onto at least one colloidal silica dispersion, wherein the at least one hydroxylated polydiorganopolysiloxane grafted onto the least one colloidal silica dispersion contains residual silanol groups from the at least one hydroxylated polydiorganopolysiloxane. Further, a waterborne co-binder silicone-organic resin composition includes (A) the crosslinkable silicone emulsion and (B) an organic resin emulsion which provides improved cured properties including, but not limited to, improved hydrophobicity (water resistance), scratch resistance and gloss retention as well as process for making the emulsions and the compositions.
Type:
Grant
Filed:
July 7, 2016
Date of Patent:
November 26, 2019
Assignee:
MOMENTIVE PERFORMANCE MATERIALS INC.
Inventors:
Ping Jiang, Louisa Maio, Vikram Kumar, Martin Wusik, Yogesh Tiwary, Michael Seeber
Abstract: The present technology provides a foam-forming composition comprising at least one polyol, at least one isocyanate, at least one copper catalyst composition, and at least one surfactant. The copper catalyst composition may comprise a copper (II) compound dissolved in a solvent. In one embodiment, the copper catalyst composition comprises (Cu(II)(acac)2) dissolved in DMSO.
Abstract: Provided is a composition and process for producing a crosslinked product. The composition comprises a mixture constituting (a) an alkenyl silicone, (b) a hydrogen siloxane, (c) a cure inhibitor and (d) a hydrosilylation catalyst, optionally in the presence of a solvent, and (e) sulfur compounds in order to produce the crosslinked product, and the process comprises reacting such a composition to form a crosslinked product.
Abstract: There is provided herein an elastomeric coating composition containing (a) at least one condensation polymerization-effective polymer bearing two or more silicon atoms; (b) a surface wetting agent, (c) a filler; (d) a condensation catalyst; and, (e) optionally, one or more crosslinking agents. There are also provided architectural coatings including the same, as well as single coat anti-dirt, and/or anti-stain, and/or anti-fouling coatings including the same.
Abstract: A method of stabilizing imino-functional silane involving adding thereto at least one Brønsted-Lowry base to inhibit, suppress or prevent the addition reactions of the imino-functional silane with itself to form a imino- and amino-functional silane and the subsequent deamination reactions to form conjugated carbon-carbon double bond-containing imino-functional silanes and stabilized imino-functional silanes containing the at least one Brønsted-Lowry base.
Abstract: A light emitting diode assembly comprising such thermal management assembly is shown and described herein. The light emitting diode assembly may comprise a light emitting diode in thermal contact with a heat spreader. The heat spreader may comprise a core and/or fins. The core and/or fins comprise a thermal pyrolytic graphite material. The thermal management assembly comprising the core and/or fins can dissipate heat from the light emitting diode.
Abstract: There is provided novel mono-acrylate functionalized siloxane monomer containing carbosiloxane linkage for improved hydrolysis resistance. This invention also provides copolymers produced using these monomers and their use in various applications.
Type:
Grant
Filed:
March 21, 2011
Date of Patent:
August 27, 2019
Assignee:
Momentive Performance Materials Inc.
Inventors:
Anubhav Saxena, Umpathy Senthilkumar, Kenrick M. Lewis
Abstract: A method for forming high purity silica articles. The high purity silica articles can be particularly suitable for forming packaging such as packaging for pharmaceutical applications. The method for forming high purity silica articles can comprise, in one embodiment, (a) forming a fused quartz melt from a SiO2 raw material; (b) forming a quartz tube from the fused quartz melt; (c) treating the quartz tube with an acid composition; (d) heat treating the quartz tube subsequent to treating with the acid composition; and (e) optionally treating the quartz article with an acid composition subsequent to the heat treating operation. The method can enhance the purity of silica glass articles and products made therefrom.
Abstract: Process for the preparation of plastic composite molded bodies in which hard-soft molded bodies made of low-melting thermoplastics and light curable polyorganosiloxane compositions are prepared as well as products produced by this process.
Abstract: A curable composition comprising (A) an organopolysiloxane comprising a curable functional group; and (B) a silicone-free, organic material comprising a reactive functional group. The curable composition exhibits high refractive index and optical clarity. The curable composition can be used to prepare a cured material that exhibits high refractive index, optical clarity, crack resistance, and low moisture vapor permeability.
Abstract: The present technology relates to an antifog coating composition comprising a matrix, a hydrophilic compound, and a surfactant. The antifog coating composition may further comprise a thermal or a photo-initiator. The antifog coating composition may be applied to a polycarbonate substrate.
Type:
Grant
Filed:
January 14, 2016
Date of Patent:
August 13, 2019
Assignee:
MOMENTIVE PERFORMANCE MATERIALS INC.
Inventors:
Raghuraman Govindan Karunakaran, Indumathi Ramakrishnan, Andreas Haeuseler, Keith J. Weller
Abstract: A transport puck vertically aligns a caulking cartridge, nozzle-down. The puck includes (i) a substantially solid lower plug portion, having a lead face and a bottom face and an center passageway that is at least partially inverted frustum-shaped that forms a side contact face that tapers from a wider lead face opening to a narrower bottom face opening; and or to a tubular sleeve from the side contact face to the bottom face opening; (ii) an upper sleeve, shaped to receive the caulking cartridge in a desired vertical alignment to the lower plug portion; and (iii) at least one funnel-shaped bore into the bottom face with an inserted connector comprising a head and stem, the head spaced within the bore to define a spacing that has been determined to identify bottom face wear.
Abstract: A resin composition which includes: (A) a polyorganosiloxane that contains a mercaptoalkyl group bonded to a silicon atom and has a viscosity at 23° C. of 20 to 3,000 cP; (B) a polyorganosiloxane containing an aliphatic unsaturated group; (C) a photoreaction initiator; (D) a chemically surface-treated silica having a BET specific surface area of 50 to 250 m2/g and a pH of 5.0 to 9.0; and (E) a polyoxyalkylene glycol, and/or a derivative of the polyoxyalkylene glycol. (B) includes: a linear polyorganosiloxane; and optionally a branched polyorganosiloxane. The ratio of mercaptoalkyl groups in (A) to the total aliphatic unsaturated groups in (B) is 0.45 to 2.00, the content of (D) is 0.5 to 26 parts relative to 100 parts by mass of (B), the content of (E) is 0.001 to 1.0 mass % relative to the total mass of (A) to (E), and the viscosity at 23° C. is 500 to 100,000 cP.
Type:
Grant
Filed:
April 4, 2016
Date of Patent:
July 16, 2019
Assignee:
MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
Abstract: A thermally conductive silicone composition is shown and described herein. The thermally conductive silicone composition comprises (A) an ionically modified siloxane, and (B) a thermally conductive filler comprising a first filler and a second filler, where the first filler and/or the second filler comprises a plurality of filler types, the plurality of filler types differing from one another in terms of particle size and/or morphology. The ionically modified siloxane may function as a dispersing aid or wetter for efficient dispersion of thermal conducting organic and inorganic fillers to achieve high thermal conductivity.