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公开(公告)号：US20230117014A1
公开(公告)日：2023-04-20
申请号：US17906195
申请日：2021-03-15
发明人： Tirtha Chatterjee , Steven Jons
摘要： A method for fractionating a sulfuric acid process stream having at least 1 wt % sulfuric acid, using a treatment system comprising three filtration assemblies each having membranes that are suitable to pass less than 10% salt in a standard test such that average passage of sulfuric acid from the first and third filtration assemblies is less than 30% and average passage of sulfuric acid from second filtration assembly is more than 70%. The system produces a fraction of the stream with a pH between 4 and 10, and a second fraction that contains at least 20 weight percent of sulfuric acid.
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公开(公告)号：US11509016B2
公开(公告)日：2022-11-22
申请号：US16784413
申请日：2020-02-07
发明人： Byoung Sam Kang
IPC分类号： H01M50/24 , D21H13/26 , D21H17/55 , D21H17/68 , D21H27/00 , H01M50/44 , H01M50/411 , H01M50/463
摘要： A paper suitable for use as a cell-to-cell flame barrier in a battery, and a battery comprising the paper, the paper comprising 40 to 70 weight percent fibrids and 30 to 60 weight percent mica, based on the total weight of the fibrids and mica in the paper; wherein the fibrids comprise a blend of 80 to 20 weight percent polymer and 20 to 80 weight percent aerogel powder, based on the total weight of the polymer and aerogel powder in the fibrids; the paper having a thickness of 100 to 4000 micrometers.
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公开(公告)号：US20220325451A1
公开(公告)日：2022-10-13
申请号：US17679820
申请日：2022-02-24
发明人： JEFFREY ALAN HANKS , ERIC KEY , OLIVIER BEAT NOTH
摘要： A flame-resistant cut-resistant fabric, and a glove or other article comprising the fabric, the fabric comprising: (a) at least one first yarn comprising at least 50 weight percent heat-resistant polymeric fiber, wherein at least 30 weight percent of the polymeric fiber present in the at least one first yarn is cut-resistant heat-resistant polymeric fiber having a cut resistance of 500 grams force or higher per ASTM F2992-15; and (b) at least one second yarn having a sheath/core construction with a sheath of halogenated self-extinguishing staple fibers and a core comprising at least one continuous elastomeric filament, wherein 60 to 95 weight percent of the at least one second yarn is halogenated self-extinguishing fiber, and the halogenated self-extinguishing fiber is in contact with the at least one continuous elastomeric filament, the second yarn being free or substantially free of inorganic fibers; the fabric having a maximum after-flame time of two seconds or less and weight loss of 5 weight percent of less when tested per NFPA-2112-2018.
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公开(公告)号：US11300386B2
公开(公告)日：2022-04-12
申请号：US14985897
申请日：2015-12-31
发明人： Allen L. Price , David Brahms , Scott Janco , Courtney Musciano , Robert Gravel , Eric A. Barter , Matt Langley , James Stahl , Vincent Gallacher
摘要： A ballistic material is made from spunlace nonwoven fibers mechanically entangled into a woven ballistic fabric. The spunlace nonwoven may comprise low denier fibers providing for a highly dense ballistic product.
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公开(公告)号：US11261543B2
公开(公告)日：2022-03-01
申请号：US15172753
申请日：2016-06-03
摘要： A process for the preparation of plexifilamentary film-fibril strands of polymer. The process includes the steps of generating a spin fluid containing (a) 5 to 30 wt. % containing one or more polymer types, (b) a primary spin agent selected from the group consisting of dichloromethane, cis-1,2-dichloroethylene and trans-1,2-dichloroethylene, and (c) a co-spin agent comprising 1H,6H-perfluorohexane or 1H-perfluorohexane or 1H-perfluoroheptane. The spin fluid is flash-spun at a pressure that is greater than the autogenous pressure of the spin fluid into a region of lower pressure to form plexifilamentary film-fibril strands of the polymer. The co-spin agent is present in the spin fluid in an amount sufficient to form an azeotrope-like composition with the primary spin agent in the presence of the one or more polymer types. The polymer may be selected from the group consisting of high density polyethylene, polypropylene, polybutene-1, polymethylpentene, polyvinylidene fluoride, poly (ethylene tetrafluoroethylene), and blends of the foregoing.
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公开(公告)号：US11247180B2
公开(公告)日：2022-02-15
申请号：US16086941
申请日：2017-03-20
发明人： Menno Bos , Martin Heijnen , Natalia Widjojo
摘要： The present invention is related to a method for fabricating multilayer singlebore membranes (10) or multilayer multibore membranes (20) for ultrafiltration applications including the following method steps: (a) feeding at least a material of a substrate (12), at least one material of a functional layer (14, 15) and a bore fluid (36) to a spinneret (30) simultaneously; (b) forming said membranes (10, 20) as a tube-like string (54) in a one-step process in said spinneret (30); (c) thereby assigning a functionality to said functional layer (14, 15) applied on at least one surface (13, 17) of said substrate (12). The invention is also related to a spinneret (30) for fabricating multilayer singlebore membranes (10) or multilayer multibore membranes (20), using the inventive method, and to a system comprising such a spinneret (30).
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公开(公告)号：US20210296685A1
公开(公告)日：2021-09-23
申请号：US17194796
申请日：2021-03-08
发明人： MEHDI AFSHARI , BYOUNG SAM KANG
IPC分类号： H01M10/0562 , H01M10/0525
摘要： A solid-state composite electrolyte, suitable for use in solid-state batteries, and a battery comprising same, the solid-state composite electrolyte comprising 70 to 99 weight percent inorganic solid electrolyte and 1 to 30 weight percent aramid polymer fibrils, based on the total weight of the inorganic solid electrolytes and aramid fibrils in the solid-state composite electrolyte, wherein the aramid polymer fibrils have: i) a diameter of 10 to 2000 nanometers, ii) a length of 0.2 to 3 millimeters, iii) a specific surface area of 3 to 40 square meters/gram, and iv) a Canadian Standard Freeness of 0 to 100 milliliters; the solid-state composite electrolyte having a thickness of 5 to 1000 micrometers.
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公开(公告)号：US11021611B2
公开(公告)日：2021-06-01
申请号：US16331432
申请日：2017-08-22
发明人： Patrick Henry Young
IPC分类号： C09D5/00 , C09D7/63 , C09D171/00 , C08K5/103
摘要： A composition comprises an alpha, omega-telechelic silyl-terminated polymer and a plasticizer wherein (i) the Fedors Solubility Parameter difference between the polymer and the plasticizer is no greater than 0.8, (ii) the polymer plus plasticizer comprises from 30 to 80 weight percent of the composition, and (iii) the polymer comprises from 10 to 70 weight percent of the combined weight of polymer and plasticizer.
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公开(公告)号：US10982353B2
公开(公告)日：2021-04-20
申请号：US15669089
申请日：2017-08-04
发明人： Mark William Andersen , Mark T. Aronson , Christopher William Newton , Thomas Wayne Steinruck , B Lynne Wiseman , Reiyao Zhu
IPC分类号： D01F8/04 , D01F1/09 , D02G3/44 , D01F1/04 , D01F8/12 , A41D31/08 , D01F1/10 , A41D13/008 , D02G3/22
摘要： A yarn comprising a plurality of bicomponent filaments having a first region comprising a first polymer composition and a second region comprising a second polymer composition; the regions being distinct and present in the bicomponent filaments in a sheath-core structure or a side-by-side structure; wherein the first polymer composition comprises aramid polymer containing 0.5 to 20 weight percent homogeneously dispersed discrete carbon particles and the second polymer composition comprises aramid polymer being free of discrete carbon particles and having at least one homogeneously dispersed masking pigment, the yarn having a total content of 0.5 to 5 weight percent discrete carbon particles.
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公开(公告)号：US20210079647A1
公开(公告)日：2021-03-18
申请号：US16993730
申请日：2020-08-14
发明人： WAZIR NOBBEE , JESSE C. THROWER, II , JAMES DEAN KATSAROS , Stephane COSTEUX , JOHN NEILL , WILLIAM BRIAN LIEBURN , BRYN THOMAS
摘要： A composite structural board having a structural board and a water-resistant barrier (WRB) sheet, and a wall system comprising same, wherein a face of the structural board is discontinuously attached to the inner face of the WRB sheet solely by a first adhesive, the WRB sheet fully covering the face of the structural board; wherein the unattached areas between the face of the structural board and the inner face of the WRB sheet define paths by which a liquid can move between the face of the structural board and the inner face of the WRB sheet; in some instances the WRB sheet material extends beyond at least one edge of the structural board forming a WRB sheet flap.
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