公开(公告)号：US20240157309A1

公开(公告)日：2024-05-16

申请号：US18389459

申请日：2023-11-14

申请人： ENTEGRIS, INC.

发明人： Robert S. Zeller

IPC分类号： B01D71/02 ,  B01D63/06 ,  B01D67/00 ,  B01D69/02 ,  B01D69/04 ,  B01D69/12 ,  B22F1/054 ,  B22F3/16 ,  B22F7/00

CPC分类号： B01D71/02232 ,  B01D63/06 ,  B01D67/00411 ,  B01D69/02 ,  B01D69/04 ,  B01D69/12 ,  B22F1/056 ,  B22F3/16 ,  B22F7/002 ,  B01D2323/10 ,  B01D2325/0231 ,  B01D2325/0233 ,  B01D2325/04 ,  B01D2325/20 ,  B22F2301/15 ,  B22F2301/35 ,  B22F2304/054 ,  B22F2304/10 ,  B22F2998/10 ,  B22F2999/00

摘要： Described are porous sintered metal membranes that include multiple layers made from different metal particles, that may be useful as filter membranes, and methods of making and using the porous sintered metal membranes.

公开(公告)号：US20240100485A1

公开(公告)日：2024-03-28

申请号：US18262633

申请日：2022-01-22

申请人： Cornell University

发明人： Ulrich B. Wiesner ,  Yusuke Hibi

IPC分类号： B01D67/00 ,  B01D69/02 ,  B01D71/28 ,  B01D71/44 ,  B01D71/68 ,  B01D71/80 ,  C08F212/08 ,  C08F226/06 ,  C08J5/18 ,  C08K3/22 ,  C08L53/00 ,  C08L81/06

CPC分类号： B01D67/00111 ,  B01D69/02 ,  B01D71/281 ,  B01D71/44 ,  B01D71/68 ,  B01D71/80 ,  C08F212/08 ,  C08F226/06 ,  C08J5/18 ,  C08K3/22 ,  C08L53/00 ,  C08L81/06 ,  B01D2325/0233 ,  C08K2003/2241 ,  C08K2201/011

摘要： Asymmetric films, methods of making asymmetric films, and uses of asymmetric films. A method may include using at least two different solvents and at least one homopolymer and at least one block copolymer that can undergo self assembly, where the solvents are immiscible and have different surface tension, where, on film formation, all or substantially all of the block copolymer(s) migrate to an exterior surface of the homopolymer. The asymmetric films may include an isoporous region or layer and an asymmetric region or layer, where the asymmetric region does not include 10 percent by weight or more of the multiblock copolymer(s) and/or the isoporous region/layer and the asymmetric pore region/layer are not independently (or separately) formed and/or not laminated together to form the asymmetric film. The films can be used in devices, such as, for example, filtration devices.

公开(公告)号：US20240082790A1

公开(公告)日：2024-03-14

申请号：US18280146

申请日：2022-03-10

申请人： 3M INNOVATIVE PROPERTIES COMPANY

发明人： Ramona Osterloh ,  Daniel P. Malek ,  Mathias Stroschke ,  Bartlomiej Kowalczyk ,  Christian Krumm ,  Oliver Schuster ,  Pierre-Alexandre Bourgeois ,  Manfred Trussner

IPC分类号： B01D67/00 ,  B01D63/08 ,  B01D69/02 ,  B01D69/06 ,  B01D71/58 ,  B01D71/68

CPC分类号： B01D67/0011 ,  B01D63/082 ,  B01D67/0016 ,  B01D69/02 ,  B01D69/06 ,  B01D71/58 ,  B01D71/68 ,  B01D2323/02 ,  B01D2325/0212 ,  B01D2325/0233 ,  B01D2325/20 ,  B01D2325/28 ,  B01D2325/36

摘要： An asymmetric membrane. The asymmetric membrane includes a membrane wall with a first and a second porous surface and an interior situated between the surfaces; a first asymmetrical region towards the first surface; a second asymmetrical region towards the second surface; wherein the asymmetric membrane is made from a polymeric blend comprising an aromatic sulfone polymer and poly (2-oxazoline); and wherein the asymmetric membrane is in the form of a flat sheet.

公开(公告)号：US12036518B2

公开(公告)日：2024-07-16

申请号：US17424703

申请日：2020-01-15

申请人： Dow Global Technologies LLC

发明人： Junqiang Liu ,  Liren Xu ,  Janet M. Goss ,  Troy D. Wolford

IPC分类号： B01D67/00 ,  B01D53/22 ,  B01D69/02 ,  B01D69/08 ,  B01D71/02 ,  B01D71/30 ,  B01D71/64 ,  B01D71/76 ,  B29D99/00 ,  B29K105/00

CPC分类号： B01D71/301 ,  B01D53/228 ,  B01D67/0083 ,  B01D69/02 ,  B01D69/08 ,  B01D71/021 ,  B01D71/643 ,  B01D71/76 ,  B29D99/005 ,  B01D2325/0233 ,  B29K2105/0085

摘要： A carbon molecular sieve (CMS) membrane may advantageously be made by pyrolyzing a membrane precursor composition comprised of a carbon forming polymer (e.g., polyimide) blended with a polyvinylidene chloride copolymer (PVDC), the polyvinylidene chloride copolymer being the reaction product of at least 60% to 97% by weight of vinylidene chloride and at least one other comonomer and the carbon forming polymer to polyvinylidene chloride copolymer has a weight ratio of greater than 1 to 99. The membrane precursor composition may be formed by dissolving the carbon forming polymer and PVDC in a solvent to form a dope solution. The dope solution may be shaped, for example, into an asymmetric hollow fiber. The asymmetric hollow fiber may be heated to a temperature to dehydrochorinate the PVDC and then subsequently heated in a non-oxidizing atmosphere to carbonize the polymers of the shaped membrane to form the CMS membrane.

公开(公告)号：US20240116009A1

公开(公告)日：2024-04-11

申请号：US17962678

申请日：2022-10-10

申请人： L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

发明人： Junyi LIU ,  Sudhir KULKARNI ,  Raja SWAIDAN ,  Megha SHARMA

IPC分类号： B01D71/58 ,  B01D53/22 ,  B01D63/02 ,  B01D69/08

CPC分类号： B01D71/58 ,  B01D53/228 ,  B01D63/02 ,  B01D69/08 ,  B01D2325/0233 ,  B01D2325/20

摘要： Composite hollow fiber gas separation membranes with improved permeance and separation layer adhesion are manufactured by providing dipping a hollow fiber membrane substrate in a pre-coat layer coating composition followed by drying to thereby provide a pre-coated substrate and dipping the pre-coated substrate in a separation layer coating composition followed by drying to thereby provide the composite hollow fiber gas separation membranes. The pre-coating composition includes a first polymer dissolved in a first solvent and the separation layer composition includes a second polymer dissolved in a second solvent. The first and second polymers are the same or different, each of the first and second polymers is at least 1 wt % soluble in a same third solvent, the first and second solvents are the same or different, the first and third solvents are the same or different, and the second and third solvent are the same or different.

公开(公告)号：US12109537B1

公开(公告)日：2024-10-08

申请号：US18444479

申请日：2024-02-16

申请人： KING FAISAL UNIVERSITY

发明人： Junaid Saleem ,  Safdar Hossain Sk ,  Zubair Khalid Baig Moghal ,  Gordon McKay

IPC分类号： B01D61/14 ,  B01D17/04 ,  B01D69/02 ,  B01D69/12 ,  B01D71/26

CPC分类号： B01D69/02 ,  B01D17/04 ,  B01D61/147 ,  B01D69/1218 ,  B01D71/262 ,  B01D2325/0233 ,  B01D2325/04 ,  B01D2325/06 ,  B01D2325/24 ,  B01D2325/38

摘要： A bi-layered superhydrophobic membrane includes top and base layers formed from polypropylene. The bi-layered superhydrophobic membrane can have a thickness ranging from about 100 μm to about 1 mm. When subjected to oil-water emulsion separations, the superhydrophobic membrane can achieve an organic solvent flux of 14,000 Lm−2h−1 with a 96% water rejection. The bi-layered superhydrophobic membrane can be effectively used for water filtration, providing both selectivity and permeability, while offering an eco-friendly solution for reuse of polypropylene plastic waste.

公开(公告)号：US20230321611A1

公开(公告)日：2023-10-12

申请号：US18016512

申请日：2022-01-28

申请人： NATIONAL INSTITUTE FOR MATERIALS SCIENCE ,  HIROSE PAPER MFG CO., LTD.

发明人： Izumi ICHINOSE ,  Edhuan BIN ISMAIL ,  Takako TSUBATA ,  Masataka SAKAMOTO ,  Yoshiki MIZUNO

IPC分类号： B01D69/10 ,  D21H13/24 ,  D21H15/00 ,  B01D71/68 ,  B01D69/02 ,  B32B5/26

CPC分类号： B01D69/1071 ,  B01D69/02 ,  B01D71/68 ,  B32B5/266 ,  D21H13/24 ,  D21H15/00 ,  B01D2325/0233 ,  B01D2325/54 ,  B32B2262/0284 ,  B32B2262/16

摘要： The present invention provides a nonwoven fabric for a separation membrane which can prevent a bleed-through of a resin solution used for coating in a step of producing the separation membrane, can produce a separation membrane having a large permeate flux of a liquid by non-solvent induced phase separation, has high adhesiveness between a coating membrane and the nonwoven fabric, and can make the coating membrane thin, and a method of producing the same. In an exemplary aspect of the present invention, a two-layer nonwoven fabric 10 for a separation membrane is configured to have a surface layer 11 and a back surface layer 12, a coating surface of a coating solution during membrane formation is a surface 11a of the surface layer 11, and, when the nonwoven fabric 10 is impregnated with the coating solution for membrane formation, the surface layer 11 has a large Laplace force and the back surface layer 12 has a small Laplace force. The nonwoven fabric 10 for a separation membrane can be produced by sequentially papermaking a fiber dispersion liquid DS1 for a surface layer including one or more kinds of fine fibers FF having a small fiber diameter and one or more kinds of thick fibers TF having a fiber diameter larger than that of the fine fibers FF and a fiber dispersion liquid DS2 for a back surface layer consisting of the thick fibers TF using a wet papermaking method.

公开(公告)号：US20230277989A1

公开(公告)日：2023-09-07

申请号：US18317193

申请日：2023-05-15

申请人： NGK INSULATORS, LTD.

发明人： Kenichi NODA ,  Ko KOBAYASHI

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

CPC分类号： B01D71/0281 ,  B01D69/02 ,  B01D67/0051 ,  B01D67/0088 ,  B01D69/108 ,  B01D53/228 ,  B01D2325/04 ,  B01D2325/20 ,  B01D2323/081 ,  B01D67/0083 ,  B01D2325/0233

摘要： A separation membrane complex includes a support, a separation membrane, and a coating membrane. The support includes a porous portion and a dense portion that are arranged continuously. The separation membrane is provided on the porous portion of the support. The separation membrane has an end portion that is in contact with the dense portion. The coating membrane is composed by a layered inorganic compound. The coating membrane coats a boundary portion between the dense portion and the separation membrane.

公开(公告)号：US11660566B2

公开(公告)日：2023-05-30

申请号：US17850624

申请日：2022-06-27

申请人： H24US CORP

发明人： Glen Robles ,  Robert Nimocks ,  Mike Rocke ,  Charity Cheiky

IPC分类号： B01D53/22 ,  B01D69/12 ,  B01D69/02 ,  B01D69/14 ,  B01D71/36 ,  C01B3/50 ,  B01D71/02

CPC分类号： B01D53/228 ,  B01D53/226 ,  B01D69/02 ,  B01D69/1216 ,  B01D69/1218 ,  B01D69/148 ,  B01D71/021 ,  B01D71/36 ,  C01B3/503 ,  B01D2325/0231 ,  B01D2325/0233 ,  C01B2203/0405 ,  C01B2203/048 ,  C01B2203/0475

摘要： A membrane is described for purifying or separating hydrogen from a multi-component gas stream such as syngas. This membrane uses a molecular pre-treatment, a transition metal, fluorine containing polymer, carbon fibers and carbon matrix sintered on a supportive screen. The membrane may be a bilayer membrane comprised of a layer containing high surface area carbon and another layer containing lower surface area carbon. Methods for purifying hydrogen are also described.

公开(公告)号：US12097471B2

公开(公告)日：2024-09-24

申请号：US17294886

申请日：2019-11-15

申请人： Evoqua Water Technologies LLC

发明人： Gregory R Collins

IPC分类号： B01D67/00 ,  A61M1/16 ,  B01D61/02 ,  B01D69/02 ,  B01D69/10 ,  B01D69/14 ,  C02F1/44

CPC分类号： B01D67/0079 ,  A61M1/16 ,  B01D61/027 ,  B01D69/02 ,  B01D69/10 ,  B01D69/144 ,  C02F1/442 ,  B01D67/0088 ,  B01D2323/286 ,  B01D2323/42 ,  B01D2325/0233 ,  B01D2325/20 ,  C02F2303/04

摘要： The present invention is directed to asymmetric membranes and methods for making such membranes, wherein the membranes have a void volume and nanoparticles located in the void volume. The membranes have a variety of applications, including blood purification, water purification, water decontamination and bioprocessing.