Abstract: A curable silicone adhesive composition comprising a heat stable siloxane-imide copolymer is shown and described herein. The composition includes an alkenyl silicone, a silicone hydride based cross linker, hydrosilylation catalyst and additives that is curable at relatively low temperatures and shows good heat stability.
Type:
Grant
Filed:
December 23, 2020
Date of Patent:
September 12, 2023
Assignee:
Momentive Performance Materials Inc.
Inventors:
Subrata Mandal, Tetsuo Fujimoto, Vinodh Rajendra, Joseph Zampella, Ramasubramanian Narayanan, Clarissa Miller
Abstract: Reactive poly(fluoroalkyl-functional siloxane) oligomers, method of making the same, and compositions comprising the same are shown and described herein. The reactive poly(fluoroalkyl-functional siloxane) oligomers are is derived from a hydrolysable fluoroalkyl-functional silanes. Coating compositions comprising reactive poly(fluoroalkyl-functional siloxane) oligomer(s) may be used to form a coating or a film on a substrate and impart hydrophobic and/or oleophobic properties. The reactive poly(fluoroalkyl-functional siloxane) oligomer are more hydrophobic and oleophobic and show better chemical resistance than the hydrolysable fluoroalkyl-functional silane.
Type:
Grant
Filed:
October 16, 2020
Date of Patent:
July 18, 2023
Assignee:
Momentive Performance Materials Inc.
Inventors:
Hao Shen, Antonio Chaves, Martin Wusik, Amy Hua McKinstry
Abstract: The invention relates to a process for the preparation of trichlorosilane (HSiCl3) which comprises the reaction of tetrachlorosilane (SiCU) with hydridosilanes in the presence of a catalyst.
Abstract: A condensation curable silicone adhesive composition comprising a condensation curable organopolysiloxane, siloxane-imide crosslinker, a condensation catalyst and an additive is shown and described herein. The composition is curable at relatively room temperatures and shows good heat stability.
Abstract: There is provided herein a method and an apparatus for producing an isocyanatoorganosilane which method includes feeding a carbamatoorganosilane to a cracking device where it is thermally dissociated into a reaction product mixture comprising isocyanatoorganosilane, alcohol, and heavies, followed by separating the mixture in a distillation column of two parts and collecting the isocyanatoorganosilane from the distillation column via a side stream having a predetermined location between the top and bottom parts of the column; and wherein the distillation column is configured to have a ratio of the length of the bottom part of the distillation column to the length of the top part of the distillation column which is effective to provide a side stream having a high purity and high weight percent of isocyanatoorganosilane.
Abstract: Rubber compositions comprising at least one diene based polymer, a precipitated silica, a coupling agent package comprising a mercapto-functional alkylalkoxysilane and a blocked mercapto-functional alkylalkoxysilane, a deblocking agent, a vulcanizing package comprising at least one vulcanizing agent comprising sulfur and at least one accelerator, and a scorch modifier are provided herein.
Type:
Application
Filed:
October 6, 2022
Publication date:
April 6, 2023
Applicant:
Momentive Performance Materials Inc.
Inventors:
Christopher PAPPAS, Richard W. CRUSE, Eric Raymond POHL, Aaron RYBA, Michael YORK
Abstract: A heat stable siloxane-imide copolymer and a curable silicone adhesive composition comprising such a siloxane-imide copolymer is shown and described herein. The composition includes an alkenyl silicone, a silicone hydride based cross linker, hydrosilylation catalyst and additives that is curable at relatively low temperatures and shows good heat stability.
Abstract: The present invention relates to an integrated process for the manufacture of methylchlorohydridomonosilanes in particular, from products of the Müller-Rochow Direct Process.
Type:
Grant
Filed:
September 20, 2018
Date of Patent:
December 6, 2022
Assignee:
Momentive Performance Materials Inc.
Inventors:
Norbert Auner, Tobias Santowski, Alexander Sturm, Thorsten Felder, Kenrick Lewis
Abstract: Provided is a polymer of the formula: and compositions comprising the same. The polymers comprise a cyclic unsaturated group (Z3) within the siloxane polymer backbone. The polymers have been found to exhibit good thermal conductivity and may find utility in a variety of applications.
Abstract: A condensation curable silicone adhesive composition comprising a siloxane-imide base polymer, condensation curable organopolysiloxane crosslinker, a condensation catalyst and an additive is shown and described herein. The composition is curable at relatively room temperatures and shows good heat stability.
Type:
Grant
Filed:
December 23, 2020
Date of Patent:
October 11, 2022
Assignee:
Momentive Performance Materials Inc.
Inventors:
Subrata Mandal, Tetsuo Fujimoto, Debanga B. Konwar
Abstract: A surface-treating agent containing (1) a fluoroalkylsilane oligomer mixture; and (2) a perfluoroalkyl group-containing silane compound. Also disclosed is an article including a substrate and a layer on a surface of the substrate, the layer being formed of the surface-treating agent.
Type:
Application
Filed:
April 15, 2022
Publication date:
August 11, 2022
Applicants:
DAIKIN INDUSTRIES,LTD., MOMENTIVE PERFORMANCE MATERIALS INC.
Inventors:
Hisashi MITSUHASHI, Takashi NOMURA, Motoshi MATSUI, Kaori OZAWA, Hao SHEN, Antonio CHAVES, Martin WUSIK, Amy Hua MCKINSTRY
Abstract: A surface-protective coating forming composition exhibiting excellent shelf life (storage stability) and cured coating performance is derived from alkoxysilane and a plurality of metal oxides.
Abstract: The present invention relates to curable compositions comprising at least one compound of the formula (1): wherein R is C1-C10 alkyl, and R1-R10 each are independently selected from the group consisting of hydrogen and C1-C10 alkyl, with the proviso that at least one of R1-R10 is alkyl, and wherein the substitution patterns formed by the residues R1-R5 and R6-R10 on each of the aromatic rings are different from each other, cured compositions obtained from such curable compositions, mixtures of compounds of the formula (I), the use of such compounds and mixtures of such compounds as a UV stabilizer in curable compositions, and a process for the manufacture of curable compositions comprising a UV stabilizer of the formula (1).
Type:
Grant
Filed:
September 20, 2019
Date of Patent:
June 28, 2022
Assignee:
Momentive Performance Materials Inc.
Inventors:
Paul Furuta, Andreas Haeuseler, Gunnar Hoffmüller
Abstract: The invention relates to a process for the manufacture of organomonosilanes bearing both hydrogen and chlorine substituents at the silicon atom by subjecting a silane substrate comprising one or more silanes selected from organomonosilanes, organodisilanes and organocarbodisilanes, with the proviso that at least one of these silanes has at least one chlorine substituent at the silicon atom, to a redistribution reaction in the presence of a phosphane or amine acting as a redistribution catalyst.
Type:
Grant
Filed:
September 20, 2018
Date of Patent:
June 7, 2022
Assignee:
Momentive Performance Materials Inc.
Inventors:
Norbert Auner, Tobias Santowski, Alexander Sturm
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:
Grant
Filed:
December 20, 2017
Date of Patent:
April 19, 2022
Assignee:
MOMENTIVE PERFORMANCE MATERIALS, INC
Inventors:
Huiping Zhang, Srividhya Marimuthu, Gunnar Hoffmueller, John Mitchell Huggins, Enise Michalski
Abstract: A silane based additive, rubber formulations including the additive and tires having tread portions made with the additive, together with methods of forming those products, are provided. Uncured rubber formulations in accordance with preferred embodiments of the invention comprise (1) a rubbery primary polymer or polymer blend, such as natural rubber and/or synthetic rubber; (2) reinforcing silica filler; (3) a network forming monomer or polymer, especially a thermosetting network forming moiety, for forming a secondary polymeric network; and (4) a silane containing one or more moieties of the aforementioned network forming polymer. In particular networks which can be generated in-situ are preferred. The cured rubber formulation should comprise the silica, having the secondary polymer network coupled thereto, within the rubber matrix, and not directly to the rubber chains via sulfidic linkages.
Type:
Grant
Filed:
November 5, 2019
Date of Patent:
March 8, 2022
Assignee:
Momentive Performance Materials Inc.
Inventors:
William Michael York, Adeyemi Adedayo Adepetun, Lesley Hwang, Eric Pohl
Abstract: A hydrophilic silicone, compositions comprising the same, and articles comprising the same are shown and described herein. The hydrophilic silicone is an ionically modified silicone compound wherein the compound has a net neutral charge. The hydrophilic silicone compounds may be provided as part of a composition, e.g., a composition suitable for forming a hydrogel, which may be employed to form a film material and even an article (e.g., in a contact lens).
Abstract: An organic polymer comprising an organic polymer fragment and at least one S-alkylsilyl hydrocarbonthioate group or at least one S-alkylstannyl hydrocarbonthioate group bonded to the backbone of the organic polymer fragment through a C—Si covalent bond and their methods or production are provided. The organic polymer backbone can be derived from the anionic polymerization of monomers containing C—C unsaturation. The silicon or tin atom can be further bonded to two alkoxy groups, two hydrocarbon groups or to one alkoxy group and one hydrocarbon group.
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.