Patents by Inventor Karthikeyan Sivasubramanian
Karthikeyan Sivasubramanian has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230257528Abstract: A surface treating composition is shown and described herein. A surface treating composition comprises (i) a hybrid siloxane oligomer comprises organosilicon units wherein the oligomer comprises organosilicon units with fluoro-functional groups, and organosilicon units with other reactive functionality, and (ii) a perfluoro(poly)ether group containing silane compound. The surface treating composition can be employed to provide a hydrophobic and/or oleophobic surface coating on a surface of a substrate, which may impart other beneficial properties to the article.Type: ApplicationFiled: July 1, 2021Publication date: August 17, 2023Inventors: Hisashi MITSUHASHI, Takashi NOMURA, Motoshi MATSUI, Noriaki FUKUDA, Raghavendra HEBBAR, Hao SHEN, Banpreet KAUR, Karthikeyan SIVASUBRAMANIAN, Shreedhar BHAT
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Publication number: 20230257527Abstract: A hybrid siloxane oligomer is shown and described herein. A hybrid siloxane oligomer comprises organosilicon units wherein the oligomer comprises organosilicon units with fluoro-functional groups, and organosilicon units with other reactive functionality. The oligomers can be employed to form a coating on a surface of an article to provide a hydrophobic and/or oleophobic surface coating, which may impart other beneficial properties to the article.Type: ApplicationFiled: July 1, 2021Publication date: August 17, 2023Inventors: Raghavendra HEBBAR, Hao SHEN, Banpreet KAUR, Karthikeyan SIVASUBRAMANIAN, Shreedhar BHAT
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Patent number: 10650938Abstract: A silicone polyether for use in forming a solid polymer electrolyte film, the silicone polyether comprising a heterocyclic moiety. The silicone polyether comprising the heterocyclic moiety may be used to provide an electrolyte composition suitable for use in an electrochemical device. The silicone polyether comprising a heterocyclic moiety may also be used to form a solid polymer electrolyte that may be used to form a solid polymer electrolyte film, which may be suitable for use in electrochemical devices.Type: GrantFiled: July 22, 2016Date of Patent: May 12, 2020Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.Inventors: Karthikeyan Sivasubramanian, Neeraj Gupta
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Patent number: 10294332Abstract: A functionalized siloxane network. The functionalized network comprises a ligand attached to the network. The ligand includes a pyridine-containing compound, and in one embodiment, the ligand includes a terpyridine compound. The functionalized siloxane network can be siloxane particles. The functionalized siloxane network can coordinate metal ions and can be used in luminescent articles.Type: GrantFiled: December 29, 2015Date of Patent: May 21, 2019Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.Inventors: Karthikeyan Sivasubramanian, Vivek Khare
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Patent number: 10287398Abstract: A functionalized siloxane includes a ligand capable of coordinating a metal. The functionalized siloxane includes a pyridine-containing ligand attached to a siloxane polymer. The functionalized siloxanes can be employed to provide complexes including a metal that may impart a desired property to the polymer. In one embodiment, the polymer can complex lanthanide metals that are capable of phosphorescing upon exposure to UV irradiation. Such polymers can be employed to provide functional materials such as, for example, luminescent films, coatings, etc.Type: GrantFiled: December 29, 2015Date of Patent: May 14, 2019Assignee: Momentive Performance Materials Inc.Inventors: Karthikeyan Sivasubramanian, Vivek Khare
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Publication number: 20190006715Abstract: A silicone polyether for use in forming a solid polymer electrolyte film, the silicone polyether comprising a heterocyclic moiety. The silicone polyether comprising the heterocyclic moiety may be used to provide an electrolyte composition suitable for use in an electrochemical device. The silicone polyether comprising a heterocyclic moiety may also be used to form a solid polymer electrolyte that may be used to form a solid polymer electrolyte film, which may be suitable for use in electrochemical devices.Type: ApplicationFiled: July 22, 2016Publication date: January 3, 2019Inventors: Karthikeyan SIVASUBRAMANIAN, Neeraj GUPTA
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Publication number: 20180148600Abstract: The present technology provides a coating system including a curable silicone polymer and a catalyst, wherein the catalyst is selected from a super base, a salt of a super base, or a combination of two or more thereof.Type: ApplicationFiled: June 27, 2017Publication date: May 31, 2018Inventors: Karthikeyan Murugesan, Karthikeyan Sivasubramanian, Indumathi Ramakrishnan, Sumi Dinkar, Vivek Khare, Robert Hayes
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Patent number: 9923243Abstract: The present invention relates to silicone epoxy compositions, methods for making same and uses therefore. In one embodiment, the silicone epoxy ether compositions of the present invention are silane epoxy polyethers that contain at least one epoxy functionality. In another embodiment, the silicone epoxy ether compositions of the present invention are siloxane epoxy polyethers that contain at least one epoxy functionality. In still another embodiment, the present invention relates to silicone epoxy polyether compositions that are suitable for use as an electrolyte solvent in a lithium-based battery, an electrochemical super-capacitors or any other electrochemical device.Type: GrantFiled: January 10, 2013Date of Patent: March 20, 2018Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.Inventors: Neeraj Gupta, Karthikeyan Sivasubramanian, Monjit Phukan
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Patent number: 9901912Abstract: There is provided herein a composition which contains hydride-functionalized siloxane or silane, a hydroxyl-containing compound that does not contain silicon, and a catalytically-effective amount of super acid or super base catalyst selected from the group consisting of a triaza-containing compound which contains only carbon, nitrogen and hydrogen atoms, an atrane compound, a linear or branched compound containing a sulfonyl group and a fluoro group, and combinations thereof. There is also provided a process of making such a composition.Type: GrantFiled: June 1, 2016Date of Patent: February 27, 2018Assignee: Momentive Performance Materials Inc.Inventors: Karthikeyan Sivasubramanian, Vivek P. Khare
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Publication number: 20180016401Abstract: A functionalized siloxane network. The functionalized network comprises a ligand attached to the network. The ligand includes a pyridine-containing compound, and in one embodiment, the ligand includes a terpyridine compound. The functionalized siloxane network can be siloxane particles. The functionalized siloxane network can coordinate metal ions and can be used in luminescent articles.Type: ApplicationFiled: December 29, 2015Publication date: January 18, 2018Inventors: Karthikeyan SIVASUBRAMANIAN, Vivek Khare
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Publication number: 20170369715Abstract: The present technology provides a coating system including a luminophoric material. The luminophoric material is a pyridine-containing ligand chosen from a substituted or unsubstituted bidentate pyridine compound, a substituted or unsubstituted tridentate pyridine compound, or a combination of two or more thereof. Alternatively, the luminophoric material may be a fluorescent dye. The coating system may include a topcoat material, a primer material, or a combination thereof.Type: ApplicationFiled: December 29, 2015Publication date: December 28, 2017Inventors: Karthikeyan MURUGESAN, Karthikeyan SIVASUBRAMANIAN, Indumathi RAMAKRISHNAN, Vivek KHARE
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Publication number: 20170362392Abstract: A functionalized siloxane includes a ligand capable of coordinating a metal. The functionalized siloxane includes a pyridine-containing ligand attached to a siloxane polymer. The functionalized siloxanes can be employed to provide complexes including a metal that may impart a desired property to the polymer. In one embodiment, the polymer can complex lanthanide metals that are capable of phosphorescing upon exposure to UV irradiation. Such polymers can be employed to provide functional materials such as, for example, luminescent films, coatings, etc.Type: ApplicationFiled: December 29, 2015Publication date: December 21, 2017Inventors: Karthikeyan SIVASUBRAMANIAN, Vivek Khare
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Patent number: 9751987Abstract: The present technology provides compositions, methods, and processes to form polysiloxanes. In one aspect, the present technology provides a process for the ring opening polymerization of a cyclosiloxane comprising contacting a cyclosiloxane with a N-trialkylsilyl-bis(perfluoroalkylsulfonyl)imide compound.Type: GrantFiled: August 18, 2014Date of Patent: September 5, 2017Assignee: Momentive Performance Materials Inc.Inventors: Karthikeyan Sivasubramanian, Patricia Pike Anderson, Vivek Khare
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Patent number: 9683083Abstract: The present technology provides compositions, methods, and processes to form polysiloxanes. In one aspect, the present technology provides a process for the ring opening polymerization of a cyclosiloxane comprising contacting a cyclosiloxane with a bicyclic guanidine compound. The guanidine-containing compounds useful in the ring opening reaction include a fused ring structure comprising a guanidine functional group as part of the fused ring.Type: GrantFiled: August 18, 2014Date of Patent: June 20, 2017Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.Inventors: Karthikeyan Sivasubramanian, Patricia Pike Anderson, Vivek Khare
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Patent number: 9663620Abstract: Compositions and methods for the production of siloxane materials using an azaphosphatrane as a catalyst. In one embodiment, there is provided a process for the ring opening polymerization of a cyclosiloxane in the presence of an azaphosphatrane. In another embodiment, there is provided a composition and method for condensation curing of a moisture curable composition using an azaphosphatrane.Type: GrantFiled: May 16, 2014Date of Patent: May 30, 2017Assignee: MOMENTIVE PERFORMANCE MATERIALS INC.Inventors: Karthikeyan Sivasubramanian, Patricia Anderson
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Publication number: 20160354769Abstract: There is provided herein a composition which contains hydride-functionalized siloxane or silane, a hydroxyl-containing compound that does not contain silicon, and a catalytically-effective amount of super acid or super base catalyst selected from the group consisting of a triaza-containing compound which contains only carbon, nitrogen and hydrogen atoms, an atrane compound, a linear or branched compound containing a sulfonyl group and a fluoro group, and combinations thereof. There is also provided a process of making such a composition.Type: ApplicationFiled: June 1, 2016Publication date: December 8, 2016Inventors: Karthikeyan Sivasubramanian, Vivek P. Khare
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Publication number: 20160355643Abstract: The present technology provides compositions, methods, and processes to form polysiloxanes. In one aspect, the present technology provides a process for the ring opening polymerization of a cyclosiloxane comprising contacting a cyclosiloxane with a N-trialkylsilyl-bis(perfluoroalkylsulfonyl)imide compound.Type: ApplicationFiled: August 18, 2014Publication date: December 8, 2016Inventors: Karthikeyan SIVASUBRAMANIAN, Patricia Pike ANDERSON, Vivek KHARE
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Publication number: 20160347910Abstract: Compositions and methods for the production of siloxane materials using an azaphosphatrane as a catalyst. In one embodiment, there is provided a process for the ring opening polymerization of a cyclosiloxane in the presence of an azaphosphatrane. In another embodiment, there is provided a composition and method for condensation curing of a moisture curable composition using an azaphosphatrane.Type: ApplicationFiled: May 16, 2014Publication date: December 1, 2016Applicant: Momentive Performance Materials Inc.Inventors: Karthikeyan SIVASUBRAMANIAN, Patricia ANDERSON
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Publication number: 20160215097Abstract: The present technology provides compositions, methods, and processes to form polysiloxanes. In one aspect, the present technology provides a process for the ring opening polymerization of a cyclosiloxane comprising contacting a cyclosiloxane with a bicyclic guanidine compound. The guanidine-containing compounds useful in the ring opening reaction include a fused ring structure comprising a guanidine functional group as part of the fused ring.Type: ApplicationFiled: August 18, 2014Publication date: July 28, 2016Inventors: Karthikeyan SIVASUBRAMANIAN, Patricia Pike ANDERSON, Vivek KHARE
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Publication number: 20150050560Abstract: The present invention relates to silicone epoxy compositions, methods for making same and uses therefore. In one embodiment, the silicone epoxy ether compositions of the present invention are silane epoxy polyethers that contain at least one epoxy functionality. In another embodiment, the silicone epoxy ether compositions of the present invention are siloxane epoxy polyethers that contain at least one epoxy functionality. In still another embodiment, the present invention relates to silicone epoxy polyether compositions that are suitable for use as an electrolyte solvent in a lithium-based battery, an electrochemical super-capacitors or any other electrochemical device.Type: ApplicationFiled: January 10, 2013Publication date: February 19, 2015Inventors: Neeraj Gupta, Karthikeyan Sivasubramanian, Monjit Phukan