公开(公告)号：US20240342661A1

公开(公告)日：2024-10-17

申请号：US18754201

申请日：2024-06-26

申请人： SOUTH CHINA UNIVERSITY OF TECHNOLOGY

发明人： Rongrong CAI ,  Jiusi WANG ,  Lizhi ZHANG

IPC分类号： B01D69/08 ,  B01D46/00 ,  B01D46/54 ,  B01D46/66 ,  B01D53/22 ,  B01D65/02 ,  B01D67/00 ,  B01D71/36 ,  B01D71/80

CPC分类号： B01D69/087 ,  B01D46/0032 ,  B01D46/543 ,  B01D46/785 ,  B01D53/228 ,  B01D65/02 ,  B01D67/0083 ,  B01D67/0095 ,  B01D69/081 ,  B01D71/36 ,  B01D71/80 ,  B01D2321/22 ,  B01D2323/081 ,  B01D2323/12 ,  B01D2323/35 ,  B01D2323/39

摘要： Provided are a recyclable electret filtering membrane, a preparation method therefor and a cleaning and charge regeneration method therefor. The preparation method includes: dissolving fluorine-containing polymer particles and polyoxyethylene particles in deionized water to prepare a spinning solution, and then performing electrostatic spinning, calcining, cooling, drying and corona charging to obtain the recyclable electret filtering membrane. A surface of the filtering membrane is subjected to water drop rolling cleaning and friction electrification after dust holding, and then dried to realize charge regeneration and reuse. The filtering membrane obtained in the present invention has an initial surface potential of (−600)-(−950) V, the potential can be regenerated to (−700)-(−1000) V by water drop rolling and electrification after dust holding, the charge recovery rate is 90%-125%, the dust removal rate is 90%-100%, and the filtering efficiency for PM2.5 is equal to or greater than 94%.

公开(公告)号：US11998877B2

公开(公告)日：2024-06-04

申请号：US16969128

申请日：2019-02-12

申请人： YPF TECNOLOGÍA S.A. ,  CONSEJO NACIONAL DE INVESTIGACIONES CIENTÍFICAS Y TÉCNICAS (CONICET)

发明人： Norma Beatriz D'Accorso ,  Mariana Sosa ,  Ricardo Martin Negri ,  Graciela Rojas ,  María Elena Oneto ,  Gabriel Lombardo

IPC分类号： B01D67/00 ,  B01D17/04 ,  B01D69/02 ,  B01D69/10 ,  B01D71/34 ,  B01D71/70 ,  B05D5/08 ,  C25D11/34

CPC分类号： B01D67/0069 ,  B01D17/045 ,  B01D67/0006 ,  B01D67/00791 ,  B01D67/0095 ,  B01D69/02 ,  B01D69/105 ,  B01D71/34 ,  B01D71/701 ,  B05D5/08 ,  B01D2323/04 ,  B01D2323/08 ,  B01D2323/10 ,  B01D2325/38 ,  C25D11/34

摘要： A method for preparing a super-hydrophobic membrane by cleaning a metal mesh by immersion in an organic solvent; subjecting the cleaned metal mesh to a surface modification treatment to increase its hydrophilicity; coating the treated metal mesh with a hydrophobic organic substance; and drying the metal coated mesh for obtaining the super-hydrophobic membrane. The super-hydrophobic membrane obtained thereby.

公开(公告)号：US20230330599A1

公开(公告)日：2023-10-19

申请号：US18028789

申请日：2021-09-24

申请人： UNITIKA LTD. ,  NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY

发明人： Ryota NAKAMURA ,  Kuniko INOUE ,  Kyohei UMAKOSHI ,  Takahiro ONO ,  Hideto MATSUYAMA

IPC分类号： B01D61/02 ,  B01D71/56 ,  B01D69/02 ,  B01D69/08 ,  B01D67/00 ,  C07C29/76

CPC分类号： B01D61/027 ,  B01D71/56 ,  B01D69/02 ,  B01D69/081 ,  B01D67/00165 ,  B01D67/0095 ,  B01D67/0086 ,  C07C29/76 ,  B01D2325/34 ,  B01D2325/20 ,  B01D2323/081 ,  B01D2323/60

摘要： An object of the present invention is to provide a nanofiltration membrane having a molecular weight cut-off of 200 to 1,000 and a high amount pf permeate for methanol, and suitable for use as an organic solvent nanofiltration membrane. A nanofiltration membrane formed using a polyamide resin, the nanofiltration membrane having a molecular weight cut-off of 200 to 1,000 and a methanol permeability of 0.03 L/(m2·bar·h) or more.

公开(公告)号：US20230182088A1

公开(公告)日：2023-06-15

申请号：US18070513

申请日：2022-11-29

申请人： Tianjin University

发明人： Song ZHAO ,  Zhi WANG ,  Tingyu LI ,  Yu ZHANG ,  Jixiao WANG

IPC分类号： B01D69/12 ,  B01D67/00 ,  B01D69/02 ,  B01D71/56

CPC分类号： B01D69/1251 ,  B01D67/0006 ,  B01D67/0095 ,  B01D69/02 ,  B01D71/56 ,  B01D2323/36 ,  B01D2323/40 ,  B01D2323/081 ,  B01D2323/216 ,  B01D2323/219 ,  B01D2323/2183 ,  B01D2323/21815 ,  B01D2325/20 ,  B01D2325/34

摘要： A method for preparing a high-selectivity lithium-magnesium separation membrane includes: (1) preparing an aqueous phase mixture containing aqueous phase monomer, crown ethers or aza-macrocycles, acid acceptor, surfactant and water; (2) preparing an organic phase mixture containing organic phase monomer, and organic solvent that is incompatible with water; (3) contacting the supporting membrane with the aqueous phase mixture to obtain an aqueous phase monomer-adsorbed supporting membrane; (4) contacting the aqueous phase monomer-adsorbed supporting membrane with an organic phase mixture for an interfacial polymerization reaction; and (5) placing a nascent membrane obtained into a drying oven and heat-treating the membrane to obtain a lithium-magnesium separation membrane. The present method is simple in preparation process, mild in preparation conditions, easy to scale up, and easy to realize industrial production. The prepared high-selectivity lithium-magnesium separation membrane is large in permeation flux, high in lithium-magnesium selectivity and good in long-term operation stability.

公开(公告)号：US11642629B2

公开(公告)日：2023-05-09

申请号：US16825523

申请日：2020-03-20

申请人： SAUDI ARABIAN OIL COMPANY

发明人： Garba Oloriegbe Yahaya ,  Seung-Hak Choi ,  Ahmad Bahamdan

IPC分类号： B01D53/22 ,  B01D69/12 ,  B01D67/00 ,  B01D69/02 ,  B01D69/10 ,  B01D71/64 ,  C10L3/10

CPC分类号： B01D69/125 ,  B01D53/228 ,  B01D67/0006 ,  B01D67/0095 ,  B01D69/02 ,  B01D69/105 ,  B01D71/64 ,  C10L3/101 ,  C10L3/104 ,  C10L3/105 ,  B01D2323/30 ,  B01D2323/42 ,  B01D2325/04 ,  C10L2290/548

摘要： Methods and systems for producing and using multi-layer composite co-polyimide membranes, one method for producing including preparing a microporous or mesoporous membrane support material for coating; applying a sealing layer to the membrane support material to prevent intrusion into the membrane support material of co-polyimide polymer; applying a first permselective co-polyimide layer atop and in contact with the sealing layer; and applying a second permselective co-polyimide layer atop and in contact with the first permselective co-polyimide layer.

公开(公告)号：US11642621B2

公开(公告)日：2023-05-09

申请号：US16609389

申请日：2018-10-29

申请人： SUMITOMO CHEMICAL COMPANY, LIMITED

发明人： Hironori Takemoto ,  Kohei Yamamoto ,  Shohei Kasahara ,  Osamu Hirose

IPC分类号： B01D53/22 ,  C08J7/04 ,  B01D63/10 ,  B01D67/00 ,  B01D69/02 ,  B01D69/12 ,  B01D69/14 ,  B01D71/36 ,  B01D71/40 ,  B32B27/08 ,  B32B27/32 ,  B32B37/20 ,  B32B38/16 ,  C08J5/18 ,  B32B38/00

CPC分类号： B01D53/228 ,  B01D63/10 ,  B01D67/0095 ,  B01D69/02 ,  B01D69/12 ,  B01D69/142 ,  B01D71/36 ,  B01D71/40 ,  B32B27/08 ,  B32B27/322 ,  B32B37/203 ,  B32B38/164 ,  C08J5/18 ,  C08J7/0427 ,  B01D2323/50 ,  B01D2325/36 ,  B01D2325/38 ,  B32B2038/166 ,  B32B2250/02 ,  B32B2250/24 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2305/026 ,  B32B2307/724 ,  B32B2307/728 ,  B32B2307/73 ,  B32B2309/60 ,  B32B2327/18 ,  B32B2333/04 ,  C08J2327/18 ,  C08J2333/02

摘要： An acidic gas separation membrane sheet causes an acidic gas to selectively permeate therethrough. The acidic gas separation membrane sheet includes a first porous layer, a hydrophilic resin composition layer, and a second porous layer in this order. A second peel strength between the second porous layer and the hydrophilic resin composition layer is less than a first peel strength between the first porous layer and the hydrophilic resin composition layer. An average value of the second peel strength is within a range of greater than or equal to 5 N/m and less than or equal to 500 N/m.

公开(公告)号：US09962661B2

公开(公告)日：2018-05-08

申请号：US15198071

申请日：2016-06-30

申请人： IDEX Health & Science, LLC

发明人： Carl W. Sims ,  Quan Liu

IPC分类号： B01D19/00 ,  B01D53/22 ,  B01D69/12 ,  B01D69/02 ,  B01D71/02 ,  B01D71/36 ,  B05D1/18 ,  B01D67/00 ,  B01D69/14

CPC分类号： B01D69/125 ,  B01D19/0031 ,  B01D53/228 ,  B01D67/0006 ,  B01D67/0013 ,  B01D67/0079 ,  B01D67/0083 ,  B01D67/0095 ,  B01D69/02 ,  B01D69/148 ,  B01D71/021 ,  B01D71/36 ,  B01D2053/221 ,  B01D2323/34 ,  B01D2325/24 ,  B05D1/18

摘要： A composite membrane for separations includes a substrate sheet with a non-woven array of nanotubes, and a dopant incorporated with the substrate sheet to form a non-porous, permeable composite. The composite membrane may be used to separate a target gas from a liquid by mounting the composite membrane in a housing chamber, and conditioning a permeate side of the chamber to establish a driving force for the target gas across the non-porous, permeable composite membrane.

公开(公告)号：US20180111153A1

公开(公告)日：2018-04-26

申请号：US15560806

申请日：2015-12-10

申请人： TEIJIN LIMITED

发明人： Noboru TANIKAWA

IPC分类号： B05C13/00 ,  B01D69/12 ,  B01D67/00 ,  B01D71/26 ,  B05D1/26 ,  B05D3/10 ,  B05D3/00 ,  B05C3/12 ,  B05C9/12

CPC分类号： B05C13/00 ,  B01D67/0016 ,  B01D67/0088 ,  B01D67/0095 ,  B01D69/10 ,  B01D69/12 ,  B01D71/26 ,  B01D71/34 ,  B01D71/56 ,  B01D2323/42 ,  B01D2323/50 ,  B05C3/125 ,  B05C9/12 ,  B05D1/265 ,  B05D3/007 ,  B05D3/0254 ,  B05D3/107 ,  B05D3/108 ,  B05D7/04 ,  B05D2252/02 ,  H01M2/162 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1666 ,  H01M2/168 ,  H01M2/1686

摘要： A method of manufacturing a composite film, the method including: a coating step including coating a coating liquid containing a resin on one surface or both surfaces of a porous substrate to form a coating layer, the porous substrate having a tensile strength at 2% elongation in a machine direction of 0.3 N/cm or more; a solidification step including solidifying the resin by bringing the coating layer into contact with a solidifying liquid to obtain a composite film including the porous substrate and a porous layer that is formed on one surface or both surfaces of the porous substrate and that includes the resin; and a water wishing step including washing the composite film with water by transporting the composite film at a transport speed of 30 m/min or more in a water washing tank; the water washing tank including two or more drive rolls for supporting and transporting the composite film, and a path length between any two adjacent drive rolls being from 0.5 m to 5 m.

公开(公告)号：US20180078908A1

公开(公告)日：2018-03-22

申请号：US15267652

申请日：2016-09-16

申请人： Pall Corporation

发明人： Frank Okezie Onyemauwa ,  Hassan Ait-Haddou ,  Ying Labreche

IPC分类号： B01D71/32 ,  B01D69/12 ,  B01D67/00 ,  B01D19/00 ,  C08F112/14 ,  C08F114/18

CPC分类号： B01D71/32 ,  B01D19/0031 ,  B01D67/0095 ,  B01D69/02 ,  B01D69/12 ,  B01D71/28 ,  B01D2323/08 ,  B01D2325/38 ,  C08F112/14 ,  C08F114/185

摘要： Disclosed are fluoropolymers with low CWST values and porous membranes made from the fluoropolymers. The fluoropolymer is made up of polymerized monomeric units of the formula A-X—CH2—B, wherein A is C6F13—(CH2)2, X is O or S, and B is vinylphenyl, and the fluoropolymer has a weight average molecular weight (Mw) of at least 100 Kd and/or a glass transition temperature of at least 33° C. copolymer. The porous membranes are suitable for degassing a variety of fluids.

公开(公告)号：US09878272B2

公开(公告)日：2018-01-30

申请号：US13115349

申请日：2011-05-25

申请人： Dana Craig Bookbinder ,  Gary S Calabrese ,  Yunfeng Gu ,  Jianguo Wang

发明人： Dana Craig Bookbinder ,  Gary S Calabrese ,  Yunfeng Gu ,  Jianguo Wang

IPC分类号： B01D29/05 ,  B01D67/00 ,  B01D71/02

CPC分类号： B01D29/05 ,  B01D67/0046 ,  B01D67/0058 ,  B01D67/0095 ,  B01D71/02 ,  B01D71/024 ,  B01D71/025 ,  B01D71/027 ,  B01D71/028 ,  B01D2325/04 ,  Y10T428/249981

摘要： A method is provided for making a porous inorganic membrane by using a mixture of an inorganic material, organic polymer particles and a solvent to form a slurry, the particles being non-spherical, distributing the slurry onto a surface, drying the slurry to remove the solvent and firing the dried slurry to produce the porous inorganic membrane. Examples of organic polymer particles include particles of acrylic. A substrate with a porous inorganic membrane disposed on the substrate is also provided, the inorganic membrane having an average thickness of from about 0.5 micron to about 30 microns, a porosity of from about 30% to about 65%, a median pore size (d50) of from about 0.01 micron to about 1 micron, and a value of (d90−d10)/d50 less than about 2, as measured by mercury porosimetry. An example of a substrate includes an inorganic porous support.