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公开(公告)号：US12017189B2
公开(公告)日：2024-06-25
申请号：US17269628
申请日：2019-08-21
发明人： Kunzhou Li , Zisong Nie
IPC分类号： B01D71/02 , B01D67/00 , B01D69/02 , B01D69/08 , B01D69/10 , B01D69/12 , B01D69/14 , B01D71/34 , B01D71/68 , C01B32/198 , C02F1/44
CPC分类号： B01D71/024 , B01D67/00793 , B01D69/02 , B01D69/08 , B01D69/1071 , B01D69/12 , B01D69/148 , B01D71/34 , B01D71/68 , C01B32/198 , C02F1/44 , B01D2323/081 , B01D2323/12 , B01D2325/02832 , B01D2325/02833 , B01D2325/20 , B01D2325/34 , B01D2325/36 , C02F2303/20
摘要： Water-filtration compositions, membranes, devices, and manufacturing processes including graphene oxide with hydrophilic functional groups. Disclosed are a composition comprising graphene oxide with an average particle diameter of no more than about 1 μm and has an oxygen atomic percentage of at least about 30%, a membrane comprising the composition, a water-permeable device comprising the membrane, a method of making the membrane using the composition, and several methods of generating the composition.
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公开(公告)号：US12017187B2
公开(公告)日：2024-06-25
申请号：US17903704
申请日：2022-09-06
发明人： Sahar Qavi , Reza Foudazi , Aaron Lindsay
IPC分类号： B01D69/12 , A01N37/44 , B01D67/00 , B01D69/02 , B01D71/40 , B01D71/52 , B01D71/80 , C08L33/14
CPC分类号： B01D69/125 , A01N37/44 , B01D67/0006 , B01D69/02 , B01D71/40 , B01D71/52 , B01D71/80 , C08L33/14 , B01D2323/08 , B01D2323/24 , B01D2323/345 , B01D2323/40 , B01D2325/36 , B01D2325/48
摘要： A method for in situ production of antimicrobial filtration membranes that uses self-assembly of surfactants such as block copolymers as a template. The mesophase structure (for example hexagonal or lamellar) can be determined, and membrane pore size can be controlled in the nanometer range, by changing the block copolymer and the amounts of the components such as the block copolymer, aqueous solution, monomer, crosslinker, and initiator. The monomer phase cures in the template and there is no need for organic solvents and coagulation bath or other post-modification. As-synthesized membranes were found to have pore sizes with a narrow size distribution in the range of 3-4 nm with a molecular weight cutoff of 1500 g/mol and displayed both excellent fouling resistance and high permeance of water, vastly outperforming a conventional NIPS UF membrane. The monomer can comprise a quaternary ammonium group so that the membrane is antibacterial. The block copolymer can comprise hydrophilic blocks which form the surfaces of the membrane pores, rendering them hydrophilic.
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33.发明授权公开(公告)号：US12017186B2
公开(公告)日：2024-06-25
申请号：US17281438
申请日：2019-09-30
CPC分类号： B01D69/12 , B01D53/228 , B01D67/0051 , B01D67/0076 , B01D71/028 , B01D2256/16 , B01D2256/24 , B01D2257/504 , B01D2257/7022 , B01D2323/22 , B01D2323/36 , B01D2325/02 , B01D2325/04 , B01D2325/06 , B01D2325/20
摘要： Embodiments include methods of fabricating a zeolite-like metal-organic framework with an ana-topology (ana-ZMOF) thin film membrane, the methods comprising: (1) modifying a substrate with ana-ZMOF crystal precursors in the presence of polyvinylpyrrolidone; and (2) intergrowing the ana-ZMOF crystal precursors in the presence of polyvinylpyrrolidone to form a continuous defect-free thin film of an ana-ZMOF intergrown on the substrate. Embodiments further include methods of separating chemical species comprising contacting an ana-ZMOF thin film membrane with a fluid composition containing one or more chemical species and separating at least one of the chemical species.
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34.发明公开公开(公告)号：US20240181402A1
公开(公告)日：2024-06-06
申请号：US18512890
申请日：2023-11-17
发明人： Kie Yong CHO , Min Young SON , Young Je KWON , Jae Won PARK , Gyeong Min CHOI
CPC分类号： B01D69/12 , B01D67/002 , B01D71/34 , B01D71/36 , B01D71/50 , B01D71/521 , B01D71/56 , B01D2323/42 , B01D2325/02834 , B01D2325/04
摘要： There are provided a porous composite membrane formed by blending perfluoroalkoxy alkane (PFA) with an organic substance, and a manufacturing method thereof. The porous composite membrane is able to have pores easily formed simply by blending a fluorine-based polymer with an organic substance without additional pore-forming processes such as stretching and heating, and exhibit excellent properties in terms of resistance to high temperatures and strong acids due to the use of the fluorine-based polymer as a base material, so it is available for use in semiconductor wastewater treatment that uses strong acids like HF.
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公开(公告)号：US20240181401A1
公开(公告)日：2024-06-06
申请号：US18520028
申请日：2023-11-27
IPC分类号： B01D67/00
CPC分类号： B01D67/0079 , B01D67/00042 , B01D67/0034 , B01D67/00412 , B01D67/0093 , B01D2325/30
摘要： A method for producing a microstructured air-permeable environmental barrier membrane includes providing a substrate, and structuring a through hole into the substrate, the through hole extending fully through the substrate between two opposite surfaces of the substrate, leaving the through hole uncovered, and depositing one or more nanofibers onto at least one of the two opposite substrate surfaces by applying at least one of an electrospinning or blowspinning method, such that the spun nanofibers combine to a network of nanofibers that forms a free-standing and mechanically compliant nanofibrous membrane covering the previously uncovered through hole.
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公开(公告)号：US20240173677A1
公开(公告)日：2024-05-30
申请号：US18071363
申请日：2022-11-29
发明人： Eric B. Duoss , Megan Ellis , Sarah E. Baker , Nikola Dudukovic , Auston Louis Clemens , James Spencer Oakdale
CPC分类号： B01D67/00045 , B01D71/401 , B33Y10/00 , B33Y70/00 , B33Y80/00 , B01D2323/40 , B01D2325/04 , B01D2325/16 , B01D2325/42 , B01J41/09
摘要： A mixture for forming an anion exchange membrane includes a rigid monomer, an active monomer, and a polymerization initiator. The active monomer includes an acrylate group and a functional group selected from the following: a cation group, a halide group configured to be substituted with a cation group, or a leaving group configured to be substituted with a cation group.
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公开(公告)号：US20240165567A1
公开(公告)日：2024-05-23
申请号：US18388459
申请日：2023-11-09
CPC分类号： B01D71/02 , B01D67/0062 , B33Y10/00 , B33Y70/10 , B33Y80/00
摘要： A ceramic mixture for forming a ceramic material includes ceramic nanoparticles, a primary pore former polymer capable of crosslinking, a secondary pore former polymer configured to form micron-sized pores in the ceramic material, and a polymerization initiator.
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公开(公告)号：US11986777B2
公开(公告)日：2024-05-21
申请号：US17309691
申请日：2019-12-23
CPC分类号： B01D69/02 , B01D53/228 , B01D67/0027 , B01D69/088 , B01D71/261 , B01D71/262 , B01D19/0031 , B01D2053/224 , B01D2325/022 , B01D2325/04
摘要： Hollow fiber membranes, membrane contactors, and related production and use methods. The membranes include a substrate having a multiplicity of pores and a skin layer overlaying the porous substrate. The porous substrate includes a first semi-crystalline thermoplastic polyolefin (co)polymer resin and a nucleating agent in an amount effective to achieve nucleation. The skin layer includes a second semi-crystalline thermoplastic polyolefin (co)polymer resin derived by polymerizing at most 98 wt. % of 4-methyl-1-pentene monomer with at least 2 wt. % of linear or branched alpha olefin monomers. Preferably, the first thermoplastic polyolefin (co)polymer is different from the second thermoplastic polyolefin (co)polymer. The skin layer is less porous than the porous substrate and forms an outer surface of the hollow fiber with the porous substrate forming an inner surface. The hollow fibers are formed by co-extruding the porous substrate resin and the skin layer resin through an annular die.
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公开(公告)号：US11986772B2
公开(公告)日：2024-05-21
申请号：US17656285
申请日：2022-03-24
发明人： Jonathan Steen
IPC分类号： B01D61/02 , B01D61/08 , B01D61/14 , B01D61/18 , B01D63/10 , B01D63/12 , B01D71/68 , C02F1/44 , D06C15/02 , B01D67/00
CPC分类号： B01D63/12 , B01D61/025 , B01D61/145 , B01D63/10 , B01D63/103 , C02F1/44 , C02F1/441 , C02F1/442 , D06C15/02 , B01D61/147 , B01D67/0086 , B01D71/68 , B01D2313/14 , B01D2313/143 , B01D2313/146 , B01D2313/50 , B01D2315/10 , B01D2315/16 , B01D2317/02 , C02F1/444
摘要： The present invention provides compact spiral-wound filter elements having cassette-like performance. The invention further provides filtration systems (e.g., TFF systems) and processes (e.g., SPTFF processes) employing compact spiral-wound filter elements having cassette-like performance.
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公开(公告)号：US20240157308A1
公开(公告)日：2024-05-16
申请号：US18509312
申请日：2023-11-15
发明人： MinKee Choi , Chaehoon Kim
IPC分类号： B01D71/02 , B01D67/00 , C01B32/186 , C01B32/198
CPC分类号： B01D71/0211 , B01D67/0088 , C01B32/186 , C01B32/198 , B01D2323/21819 , B01D2325/04 , C01P2006/16
摘要： Disclosed are a microporous graphene oxide sheet, a method of manufacturing the same, a dispersion including the same, and a membrane including a stack of the microporous graphene oxide sheet, the microporous graphene oxide sheet having an average size of pores ranging from about 0.1 nm to about 2 nm, wherein a spacing between pores is about 0.3 nm to about 10 nm, a standard deviation for the spacing between pores is less than or equal to about 5 nm.
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