Patents by Inventor Jitendra S. Rathore
Jitendra S. Rathore 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: 20230340303Abstract: Release liners that can be included in various adhesive products are provided. A first release liner is a layer of a composition including a) a polymeric material having at least one hydrogen atom covalently bonded to an oxygen atom, a nitrogen atom, or a sulfur atom; and b) a silicone polyether comprising at least one of polyoxoethylene units or polyoxopropylene units. A second release liner includes a substrate and a coating of the above composition disposed on a major surface of the substrate. The present disclosure also provides an article including one of the above release liners and an adhesive layer disposed on a major surface of the release liner. The composition of the release liner can advantageously be dissolved and optionally recycled.Type: ApplicationFiled: May 17, 2021Publication date: October 26, 2023Inventors: Jitendra S. Rathore, Maria A. Appeaning
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Patent number: 11591501Abstract: Barrier adhesive compositions include at least one polyisobutylene-containing polymer and a curable silsesquioxane additive. The curable silsesquioxane additive may contain free radically polymerizable groups. Barrier film articles include the barrier adhesive compositions and a film. The barrier film articles can be used to encapsulate organic electronic devices.Type: GrantFiled: December 5, 2018Date of Patent: February 28, 2023Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: John P. Baetzold, Claire Hartmann-Thompson, Jitendra S. Rathore
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Publication number: 20220282079Abstract: The composition can include a fluoropolymer and a branched silsesquioxane polymer having terminal —Si(R3)3 groups and units having formula, in which * represents a bond to another silicon atom in the branched silsesquioxane polymer, R is an organic group comprising an aliphatic carbon-carbon double bond, and R3 is a non-hydrolyzable group or hydrogen. The fluoropolymer can be crosslinked with the branched silsesquioxane polymer. An article can include a first composition including a fluoropolymer in contact with a second composition including a silicone, wherein at least one of the first composition or second composition includes the branched silsesquioxane polymer. At least one of the fluoropolymer or the silicone can be crosslinked with a branched silsesquioxane polymer including terminal —Si(R3)3 groups and units having formula, in which R* is an organic group comprising a carbon-carbon bond between the branched silsesquioxane polymer and the fluoropolymer, the silicone, or another R* group.Type: ApplicationFiled: September 3, 2020Publication date: September 8, 2022Inventors: Michael H. Mitchell, Chetan P. Jariwala, Jitendra S. Rathore, Tho Q. Nguyen
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Publication number: 20220162481Abstract: A pressure sensitive adhesive article is described comprising a pressure sensitive adhesive in contact with the release layer. The release layer comprises a thermoplastic polymer and a block copolymer additive having the general structure: A[LB]n wherein A is a polyorganosiloxane block, L is a covalent bond or a divalent linking group B is independently a C16-C70 alkyl group, and n is at least 1. In other embodiments, compositions are described comprising a thermoplastic polymer the described block copolymer additive; as well as methods of making a release composition.Type: ApplicationFiled: April 8, 2020Publication date: May 26, 2022Inventors: Jitendra S. Rathore, Maria A. Appeaning, Georgiy Teverovskiy, Marie A. Boulos, Chris J. Tanley, Kacy N.M. Rainey
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Publication number: 20210332269Abstract: Release layers that can be included in various adhesive tape products and release liners for adhesive layers are provided. The release layer is a cured reaction product of a curable release composition that contains i) a siloxane polymer having at least two hydrolyzable groups and having a weight average molecular weight of at least 1000 Daltons, ii) a crosslinker, iii) a silane additive, iv) a photoacid generator, and v) an optional silicate resin. The crosslinker is a compound of formula Si(OR5)4 or is a compound having at least two silyl groups of formula —Si(R4)x(OR5)3-x where R4 is alkyl or aryl, R5 is alkyl, and the variable xis an integer equal to 0 or 1. The silane additive is a compound having two silyl groups of formula —Si(R6)2(OR7) or a single silyl group of formula —Si(R10) (OR9)2 where R6 is alkyl or aryl, R7 is alkyl, R9 is alkyl, and R10 is alkyl or aryl.Type: ApplicationFiled: December 11, 2019Publication date: October 28, 2021Inventors: Marie A. Boulos, Jitendra S. Rathore, Maria A. Appeaning, Georgiy Teverovskiy, Scott M. LeBow, Michael L. Steiner, Chris J. Tanley
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Patent number: 11058039Abstract: Electromagnetic interference (EMI) shielding articles and methods of producing and using the same are described. The articles include electrically conductive fillers and silsesquioxane-like (SSQ-like) particles distributed inside a polymeric matrix material. In some cases, adding the SSQ-like particles leads to increased porosity of the articles which improves EMI absorbing performance.Type: GrantFiled: December 9, 2016Date of Patent: July 6, 2021Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Dipankar Ghosh, Jitendra S. Rathore
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Publication number: 20210198290Abstract: A cyclic siloxane compound, composition, method, and an article including the siloxane, wherein the cyclic siloxane has the following Formula (I): wherein: each R1 and R2 is independently a (C1-C4)alkyl; each L1 and L2 is independently a single bond, an alkylene, or an alkylene bonded to a group selected from oxy, thio, carbonyl, —NH—, and combinations thereof; each R3 is independently a linear (C14-C100)alkyl; each R4 is independently a (C1-C30)alkyl, a (C2-C30)heteroalkyl having at least one oxygen, sulfur, or —NH— group, or a (C1-C30)alkyl substituted with a fluoro, thiol, isocyanato, cyanato, hydroxyl, glycidoxy, or epoxy group; with the proviso that L1, L2, and R4 are selected such that each Si atom is directly bonded to an alkylene or an alkyl; m is an integer of at least 2; n is an integer of 0 or above; m+n is an integer of at least 3; and the cyclic siloxane compound is a solid at 25° C.Type: ApplicationFiled: September 13, 2018Publication date: July 1, 2021Inventors: Jitendra S. Rathore, Chetan P. Jariwala, Lin Chen
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Publication number: 20210163802Abstract: Dual cure transfer films include a siloxane-based matrix formed by thermal curing of a siloxane with thermally curable groups, a silsesquioxane with UV-curable groups that is dispersed within the siloxane-based matrix, and a UV photoinitiator. The transfer film is an adhesive and can be cured by UV radiation to form a non-tacky cured layer, where the non-tacky cured layer is optically transparent. In preferred embodiments at least one siloxane comprising thermally curable groups comprises a siloxane with epoxy functional groups; and the at least one silsesquioxane comprising UV-curable groups comprises a (meth)acrylate functional silsesquioxane.Type: ApplicationFiled: December 10, 2018Publication date: June 3, 2021Inventors: Evan L. Schwartz, Claire Hartmann-Thompson, Jitendra S. Rathore
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Patent number: 10988578Abstract: A composition, and article including such composition, wherein the composition includes a silsesquioxane polymer and a free siloxane; wherein the silsesquioxane polymer includes a three-dimensional network of Formula (I): wherein: each R1 and R2 is independently a (C1-C4)alkyl; each L1 and L2 is independently a single bond, an alkylene, or an alkylene bonded to a group selected from oxy, thio, carbonyl, —NH—, and combinations thereof; each R3 is independently a linear (C14-C100)alkyl; each R5 is independently a (C1-C30)alkyl, a (C1-C30)fluorinated alkyl, or a (C2-C30)heteroalkyl having at least one oxygen, sulfur, or —NH— group; with the proviso that L1, L2, and R5 are selected such that each Si atom is directly bonded to an alkylene or an alkyl; m is an integer of at least 2; n is an integer of 0 or above; m+n is an integer of at least 10; each oxygen atom at an asterisk (*) is bonded to another Si atom within the three-dimensional network; and the silsesquioxane polymer is a solid at 25° C.Type: GrantFiled: September 13, 2018Date of Patent: April 27, 2021Assignee: 3M Innovative Properties CompanyInventors: Jitendra S. Rathore, Ramesh C. Kumar, Chetan P. Jariwala
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Publication number: 20210061956Abstract: A composition, and article including such composition, wherein the silsesquioxane polymer includes a three-dimensional network of Formula (I): wherein: each R1 and R2 is independently a (C1-C4)alkyl; each L1 and L2 is independently a single bond, an alkylene, or an alkylene bonded to a group selected from oxy, thio, carbonyl, —NH—, and combinations thereof; each R3 is independently a linear (C14-C100)alkyl; each R5 is independently a (C1-C30)alkyl, a (C1-C30)fluorinated alkyl, or a (C2-C30)heteroalkyl having at least one oxygen, sulfur, or —NH— group; with the proviso that L1, L2, and R5 are selected such that each Si atom is directly bonded to an alkylene or an alkyl; m is an integer of at least 2; n is an integer of 0 or above; m+n is an integer of at least 10; each oxygen atom at an asterisk (*) is bonded to another Si atom within the three-dimensional network; and the silsesquioxane polymer is a solid at 25° C.Type: ApplicationFiled: September 13, 2018Publication date: March 4, 2021Inventors: Jitendra S. Rathore, Ramesh C. Kumar, Chetan P. Jariwala
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Patent number: 10889691Abstract: A silsesquioxane polymer, composition, method, and article including such polymer, wherein the polymer includes a three-dimensional network of Formula (I): wherein: each R1 and R2 is independently a (C1-C4)alkyl; each L1 and L2 is independently in a single bond, an alkylene, or an alkylene bonded to a group selected from oxy, thio, carbonyl, —NH—, and combinations thereof; each R3 is independently a linear (C14-C100)alkyl; each R4 is independently a (C1-C30)alkyl, (C2-C30)heteroalkyl having at least one oxygen, sulfur, or —NH— group, or a (C1-C30)alkyl substituted with a fluoro, thiol, isocyanato, cyanato, hydroxyl, glycidoxy, or epoxy group; with the proviso that L1, L2, and R4 are selected such that each Si atom is directly bonded to an alkylene or an alkyl; m is an integer of at least 3; n is an integer of 0 or above; m+n is an integer of at least 3; each oxygen atom at an asterisk (*) is bonded to another Si atom within the three-dimensional network; and the silsesquioxane polymer is a solid at 25° C.Type: GrantFiled: September 13, 2018Date of Patent: January 12, 2021Assignee: 3M Innovative Properties CompanyInventors: Jitendra S. Rathore, Chetan P. Jariwala, Lin Chen, Ramesh C. Kumar
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Publication number: 20200385531Abstract: A silsesquioxane polymer, composition, method, and article including such polymer, wherein the polymer includes a three-dimensional network of Formula (I): wherein: each R1 and R2 is independently a (C1-C4)alkyl; each L1 and L2 is independently in a single bond, an alkylene, or an alkylene bonded to a group selected from oxy, thio, carbonyl, —NH—, and combinations thereof; each R3 is independently a linear (C14-C100)alkyl; each R4 is independently a (C1-C30)alkyl, (C2-C30)heteroalkyl having at least one oxygen, sulfur, or —NH— group, or a (C1-C30)alkyl substituted with a fluoro, thiol, isocyanato, cyanato, hydroxyl, glycidoxy, or epoxy group; with the proviso that L1, L2, and R4 are selected such that each Si atom is directly bonded to an alkylene or an alkyl; m is an integer of at least 2; n is an integer of 0 or above; m+n is an integer of at least 3; each oxygen atom at an asterisk (*) is bonded to another Si atom within the three-dimensional network; and the silsesquioxane polymer is a solid at 25° C.Type: ApplicationFiled: September 13, 2018Publication date: December 10, 2020Inventors: Jitendra S. Rathore, Chetan P. Jariwala, Lin Chen, Ramesh C. Kumar
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Patent number: 10858516Abstract: A silsesquixane polymer, a composition including such silsesquixane polymer, and an article including such polymer or composition, wherein the composition includes a silsesquioxane polymer and a free siloxane; wherein the silsesquioxane polymer includes a three-dimensional network of Formula (I): wherein: each R1 and R2 is independently a (C1-C4)alkyl; each L1 is independently a single bond, an alkylene, or an alkylene bonded to a group selected from oxy, thio, carbonyl, —NH—, and combinations thereof; each R3 is independently a linear (C14-C100)alkyl; with the proviso that L1 is selected such that each Si atom is directly bonded to an alkylene or an alkyl; m is an integer of at least 2; n is an integer of at least 1; m+n is an integer of at least 10; each oxygen atom at an asterisk (*) is bonded to another Si atom within the three-dimensional network; and the silsesquioxane polymer is a solid at 25° C.Type: GrantFiled: September 13, 2018Date of Patent: December 8, 2020Assignee: 3M Innovative Properties CompanyInventors: Jitendra S. Rathore, Ramesh C. Kumar, Chetan P. Jariwala
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Patent number: 10836934Abstract: Silicone-based elastomeric materials, articles containing the silicone-based elastomeric materials, reaction mixtures used to form the silicone-based elastomeric materials, and methods of making the silicone-based elastomeric materials are described. The silicone-based elastomeric materials are prepared by polymerizing silicone compounds having at least two ethylenically unsaturated groups in the presence of actinic radiation and a controlled radical initiator. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a single carbon between the two dithiocarbamate or dithiocarbonate groups. The silicone-based elastomeric materials typically have improved mechanical properties compared to silicone-based elastomeric materials formed by free radical polymerization reactions in the presence of conventional photoinitiators.Type: GrantFiled: September 14, 2018Date of Patent: November 17, 2020Assignee: 3M Innovative Properties CompanyInventors: Jitendra S. Rathore, Babu N. Gaddam, George W. Griesgraber, Kevin M. Lewandowski, Stephen B. Roscoe
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Patent number: 10822532Abstract: Silicone-based pressure-sensitive adhesives, reaction mixtures used to form the pressure-sensitive adhesives, methods of making the silicone-based pressure-sensitive adhesives, and articles containing the silicone-based pressure-sensitive adhesives are described. More particularly, the silicone-based pressure-sensitive adhesives include silicone-based elastomeric materials that are prepared by polymerizing a silicone compound having at least two ethylenically unsaturated groups in the presence of actinic radiation (e.g., ultraviolet radiation) and a controlled radical initiator. The controlled radical initiator is a bis-dithiocarbamate or bis-dithiocarbonate compound having a single carbon between the two dithiocarbamate or dithiocarbonate groups.Type: GrantFiled: September 14, 2018Date of Patent: November 3, 2020Assignee: 3M Innovative Properties CompanyInventors: Jitendra S. Rathore, Babu N. Gaddam, George W. Griesgraber, Kevin M. Lewandowski, Stephen B. Roscoe, Payam Khodaparast
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Publication number: 20200291277Abstract: Barrier adhesive compositions include at least one polyisobutylene-containing polymer and a curable silsesquioxane additive. The curable silsesquioxane additive may contain free radically polymerizable groups. Barrier film articles include the barrier adhesive compositions and a film. The barrier film articles can be used to encapsulate organic electronic devices.Type: ApplicationFiled: December 5, 2018Publication date: September 17, 2020Inventors: John P. Baetzold, Claire Hartmann-Thompson, Jitendra S. Rathore
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Publication number: 20200270478Abstract: Polycarbodiimide-containing compositions, methods of using such compositions (e.g., to treat fibrous substrates), and articles treated with such compositions, wherein the compositions include a polycarbodiimide and a silicon-containing compound selected from cyclic siloxanes, silsesquioxane (SSQ) polymers, or mixtures thereof.Type: ApplicationFiled: September 12, 2018Publication date: August 27, 2020Inventors: Chen Lin, Chetan P. Jariwala, Jitendra S. Rathore
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Publication number: 20200270457Abstract: A silsesquixane polymer, a composition including such silsesquixane polymer, and an article including such polymer or composition, wherein the composition includes a silsesquioxane polymer and a free siloxane; wherein the silsesquioxane polymer includes a three-dimensional network of Formula (I): wherein: each R1 and R2 is independently a (C1-C4)alkyl; each L1 is independently a single bond, an alkylene, or an alkylene bonded to a group selected from oxy, thio, carbonyl, —NH—, and combinations thereof; each R3 is independently a linear (C14-C100)alkyl; with the proviso that L1 is selected such that each Si atom is directly bonded to an alkylene or an alkyl; m is an integer of at least 2; n is an integer of at least 1; m+n is an integer of at least 10; each oxygen atom at an asterisk (*) is bonded to another Si atom within the three-dimensional network; and the silsesquioxane polymer is a solid at 25° C.Type: ApplicationFiled: September 13, 2018Publication date: August 27, 2020Inventors: Jitendra S. Rathore, Ramesh C. Kumar, Chetan P. Jariwala
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Publication number: 20200270494Abstract: Silicone-based pressure-sensitive adhesives, reaction mixtures used to form the pressure-sensitive adhesives, methods of making the silicone-based pressure-sensitive adhesives, and articles containing the silicone-based pressure-sensitive adhesives are described. More particularly, the silicone-based pressure-sensitive adhesives include silicone-based elastomeric materials that are prepared by polymerizing a silicone compound having at least two ethylenically unsaturated groups in the presence of actinic radiation (e.g., ultraviolet radiation) and a controlled radical initiator. The controlled radical initiator is a bis-dithiocarbamate or bis-dithiocarbonate compound having a single carbon between the two dithiocarbamate or dithiocarbonate groups.Type: ApplicationFiled: September 14, 2018Publication date: August 27, 2020Inventors: Jitendra S. Rathore, Babu N. Gaddam, George W. Griesgraber, Kevin M. Lewandowski, Stephen B. Roscoe, Payam Khodaparast
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Publication number: 20200248034Abstract: Silicone-based elastomeric materials, articles containing the silicone-based elastomeric materials, reaction mixtures used to form the silicone-based elastomeric materials, and methods of making the silicone-based elastomeric materials are described. The silicone-based elastomeric materials are prepared by polymerizing silicone compounds having at least two ethylenically unsaturated groups in the presence of actinic radiation and a controlled radical initiator. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a single carbon between the two dithiocarbamate or dithiocarbonate groups. The silicone-based elastomeric materials typically have improved mechanical properties compared to silicone-based elastomeric materials formed by free radical polymerization reactions in the presence of conventional photoinitiators.Type: ApplicationFiled: September 14, 2018Publication date: August 6, 2020Inventors: Jitendra S. Rathore, Babu N. Gaddam, George W. Griesgraber, Kevin M. Lewandowski, Stephen B. Roscoe