公开(公告)号：US20240207790A1

公开(公告)日：2024-06-27

申请号：US18558064

申请日：2022-06-10

Applicant: Amtek Research International LLC

Inventor： Robert Waterhouse ,  Cory S. Rogers ,  Eric B. Hostetler ,  Richard W. Pekala

IPC: B01D67/00 ,  B01D53/04 ,  B01D69/06 ,  B01D71/26 ,  H01M50/403 ,  H01M50/417 ,  H01M50/463

CPC classification number: B01D67/003 ,  B01D53/04 ,  B01D67/0018 ,  B01D67/0027 ,  B01D69/06 ,  B01D71/261 ,  H01M50/403 ,  H01M50/417 ,  H01M50/463 ,  B01D2259/4009 ,  B01D2323/219 ,  B01D2323/60

Abstract: An environmentally friendly closed loop manufacturing process (101, 102) produces microporous membranes (32) by cast or extrusion of polymer-plasticizer mixtures followed by non-porous film formation (20), extraction (22) of the plasticizer using an azeotrope solvent and thereby forming a solvent-laden sheet and a mixture of plasticizer and azeotrope solvent, distillation (28) of the mixture to separate the plasticizer and azeotrope solvent for reuse, evaporation (30) of the azeotrope solvent from the solvent-laden sheet to form the micropores, and capture of the resultant solvent vapor for subsequent adsorption-desorption of the azeotrope solvent from activated carbon (34) or by vapor condensation (36) for reuse in the manufacturing process. The azeotrope solvent is at least a two-component mixture of solvents, one of which is designed for efficient removal of the plasticizer, while the other component(s) render(s) the azeotrope solvent non-flammable.

公开(公告)号：US20230256397A1

公开(公告)日：2023-08-17

申请号：US18012214

申请日：2021-06-18

Applicant: COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANISATION

Inventor： Zongli Xie ,  Stephen Richard Gray ,  Guang Yang

IPC: B01D69/02 ,  B01D71/38 ,  B01D69/10 ,  B01D67/00 ,  B01D61/02 ,  B01D61/36 ,  B01D71/02 ,  C02F1/44 ,  B01D69/14

CPC classification number: B01D69/02 ,  B01D71/381 ,  B01D69/107 ,  B01D67/0079 ,  B01D61/025 ,  B01D61/362 ,  B01D61/364 ,  B01D71/0212 ,  B01D71/028 ,  B01D71/0211 ,  C02F1/448 ,  C02F1/447 ,  B01D69/148 ,  C02F1/441 ,  B01D2325/36 ,  B01D2325/02832 ,  B01D2325/02831 ,  B01D2325/04 ,  B01D2323/30 ,  B01D2323/02 ,  B01D2323/06 ,  B01D2323/12 ,  B01D2323/21 ,  B01D2323/60 ,  B01D2323/081 ,  C02F2103/08

Abstract: The present disclosure generally relates to liquid separation membranes. The present disclosure also relates to membranes comprising at least a nanoporous hydrophilic layer and a porous hydrophobic substrate. The present disclosure also relates to a process for preparing the membranes and to use of the membranes in pervaporation and/or membrane distillation processes including desalination and/or solvent dehydration.

公开(公告)号：US20240325986A1

公开(公告)日：2024-10-03

申请号：US18625168

申请日：2024-04-02

Applicant: DECHEMA-Forschungsinstitut ,  Friedrich-Alexander-Universität Erlangen-Nürnberg ,  Uniwell Rohrsysteme GmbH & Co. KG

Inventor： Beatriz Sánchez Batalla ,  Simon Fischer ,  Zongwen Fu ,  Claudia Weidlich ,  Julien Bachmann ,  Thorsten Struckmann ,  Armin Laube ,  André Hofer ,  Sebastian Wachter ,  Carolin Körner ,  Dorothea Wisser

IPC: B01D67/00 ,  B01D71/68

CPC classification number: B01D67/00931 ,  B01D71/68 ,  B01D2323/36 ,  B01D2323/60 ,  B01D2325/26 ,  B01D2325/42

Abstract: A method (500) for conditioning or hydrolysis of an extruded membrane is disclosed. The method (500) comprising ion exchange processes in divided electrochemical cells using a cation exchanger membrane. The method (500) includes extruding the perfluorosulfonyl fluoride membranes from perfluorosulfonyl fluoride granulate. The method (500) also includes using a pretreatment technique to increase the ionic conductivity of the extruded perfluorosulfonyl fluoride membranes before using the perfluorosulfonic acid membranes in electrolysis cells. The method (500) also includes applying a milder pretreatment technique by activating S—F bonds to execute nucleophilic exchange of the fluoride group in a reaction. The method (500) also includes hydrolyzing sulfonyl fluoride groups to sulfonic acid using triethylsilanol.

公开(公告)号：US20240238732A1

公开(公告)日：2024-07-18

申请号：US18518804

申请日：2023-11-24

Applicant: PETRÓLEO BRASILEIRO D.A.-PETROBRAS ,  PAM MEMBRANAS SELETIVAS LTDA

Inventor： Cristiano Piacsek BORGES ,  Yuri LEITE E SILVA ,  Nicolas Roger Jean-Daniel MERMIER ,  Filippe MACHADO DE JESUS ,  Ana Paula Santana MUSSE ,  Leonardo da silva RIBEIRO ,  Cassiano Gomes AIMOLI ,  Dilson Da Costa Maia FILHO

IPC: B01D67/00

CPC classification number: B01D67/0079 ,  B01D67/0088 ,  B01D67/0095 ,  B01D2323/081 ,  B01D2323/21 ,  B01D2323/2181 ,  B01D2323/219 ,  B01D2323/60

Abstract: The invention provides polymeric membranes with a mixed matrix and hollow fibers, with high mechanical resistance, useful in high pressure gas permeation processes such as, in particular, the removal of CO2 from raw streams resulting from oil exploration. The membranes are formed by at least one polymeric layer consisting of at least one polymer and an inorganic filler of clay mineral nanoparticles. The respective co-extrusion processes applicable to the production of said membranes are also provided herein.

公开(公告)号：US20240327574A1

公开(公告)日：2024-10-03

申请号：US18573989

申请日：2022-06-23

Applicant: CHINA PETROLEUM & CHEMICAL CORPORATION ,  BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION ,  INSTITUTE OF PROCESS ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Changjiang WU ,  Suojiang ZHANG ,  Xin WEI ,  Hesheng LI ,  Shuangjiang LUO ,  Yujie WANG ,  Xinmiao ZHANG ,  Liming DING ,  Fanning MENG ,  Renjie XI ,  Yixiao XU

IPC: C08G73/10 ,  B01D69/08 ,  B01D69/10 ,  B01D71/02 ,  B01D71/64

CPC classification number: C08G73/1042 ,  B01D69/088 ,  B01D69/108 ,  B01D71/02231 ,  B01D71/643 ,  C08G73/1032 ,  C08G73/1071 ,  B01D2253/1124 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1026 ,  B01D2256/18 ,  B01D2323/60 ,  C08G2340/00

Abstract: A polyimide random copolymer has a structure represented by formula (I). A method for preparing the polyimide random copolymer, a membrane made of the polyimide random copolymer, and a method for preparing a polyimide-based hollow fiber membrane are also provided. A system for purifying helium gas and a method for purifying helium gas are related to the membrane made of the polyimide random copolymer.

公开(公告)号：US20230381742A1

公开(公告)日：2023-11-30

申请号：US18195722

申请日：2023-05-10

Applicant: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION

Inventor： Kie Yong CHO ,  Min Young SON ,  Young Je KWON ,  Gyeong Min CHOI ,  Jae Won PARK

IPC: B01J20/26 ,  C08F214/26 ,  C08J5/18 ,  B01J20/28 ,  B01J20/30 ,  B01D71/36 ,  B01D71/38 ,  B01D67/00 ,  C02F1/44

CPC classification number: B01J20/261 ,  C08F214/262 ,  C08J5/18 ,  B01J20/28033 ,  B01J20/28083 ,  B01J20/28085 ,  B01J20/28004 ,  B01J20/3007 ,  B01D71/36 ,  B01D71/382 ,  B01D67/002 ,  B01D67/0027 ,  C02F1/44 ,  C08F2800/10 ,  C08J2327/18 ,  B01D2323/081 ,  B01D2323/50 ,  B01D2323/60 ,  C02F2103/346

Abstract: There are provided a porous membrane including a perfluoroalkoxy alkane (PFA)-based melt-extruded film and having pores controlled by biaxial stretching, and a manufacturing method therefore. The porous membrane is for water treatment and includes a fluoropolymer. The method includes forming a film by melt-extruding a fluoropolymer; and controlling the pore size of the formed film by biaxial stretching. The membrane for water treatment is based on a fluoropolymer and has physical properties that are resistant to high temperatures and strong acids, and it is able to be used for treatment of wastewater such as semiconductor wastewater.

公开(公告)号：US20230330599A1

公开(公告)日：2023-10-19

申请号：US18028789

申请日：2021-09-24

Applicant: UNITIKA LTD. ,  NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY

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

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

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

Abstract: 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：US20240325985A1

公开(公告)日：2024-10-03

申请号：US18580191

申请日：2022-07-21

Applicant: Dow Global Technologies LLC

Inventor： Abhishek Roy ,  Thomas C. Fitzgibbons ,  Li Tang ,  Surendar R. Venna ,  Derrick W. Flick ,  Nikki J. Montanez ,  Hali J. McCurry ,  James B. Heard ,  Barry B. Fish

IPC: B01D67/00 ,  B01D53/22 ,  B01D69/02 ,  B01D69/08 ,  B01D71/02

CPC classification number: B01D67/0067 ,  B01D53/228 ,  B01D69/02 ,  B01D69/088 ,  B01D71/021 ,  B01D2256/16 ,  B01D2256/22 ,  B01D2256/24 ,  B01D2257/102 ,  B01D2257/7022 ,  B01D2323/081 ,  B01D2323/60 ,  B01D2325/023

Abstract: A method of manufacturing a hollow fiber carbon membrane, the method includes heating a polymeric precursor to a pyrolysis temperature that is greater than or equal to 900° C. and less than or equal to 1200° C., and pyrolyzing the polymeric precursor at the pyrolysis temperature in a pyrolysis atmosphere that comprises oxygen in an amount that is greater than 0 ppm and less than 200 ppm.

公开(公告)号：US20240317952A1

公开(公告)日：2024-09-26

申请号：US18611853

申请日：2024-03-21

Applicant: HYDROLITE LTD

Inventor： Charly David AZRA ,  Yauhen AKAYEU ,  Amiram SISSO

IPC: C08J5/22 ,  B01D67/00 ,  B01D69/02 ,  B01D71/26 ,  B01D71/28 ,  B01D71/78 ,  B01J41/05 ,  B01J41/14 ,  B01J47/12 ,  C02F1/46 ,  C08J3/00 ,  C08J3/24 ,  C08J7/12 ,  C25B13/08 ,  H01M8/0221

CPC classification number: C08J5/2287 ,  B01D67/0006 ,  B01D69/02 ,  B01D71/26 ,  B01D71/281 ,  B01D71/78 ,  B01J41/05 ,  B01J41/14 ,  B01J47/12 ,  C02F1/4604 ,  C08J3/005 ,  C08J3/24 ,  C08J7/123 ,  C25B13/08 ,  H01M8/0221 ,  B01D2323/081 ,  B01D2323/30 ,  B01D2323/385 ,  B01D2323/60 ,  B01D2325/42 ,  C08J2323/06 ,  C08J2327/04 ,  C08J2353/02 ,  C08J2423/06 ,  C08J2427/04 ,  C08J2453/02

Abstract: Methods of preparing reinforced anion exchange membranes are provided, as well as produced membranes and corresponding devices utilizing the membranes. Methods comprise compounding a halide-functionalized polymer (selected to react with amines to yield anion-conducting quaternary amine groups) with thermoplastic polymer(s) (selected to support and/or reinforce the membrane), and with copolymer(s) (selected to enhance the compounding of the polymers)—by heating, mixing and cooling—to form blend pellets, extruding the blend pellets to form a blend film, cross-linking polymer(s), and functionalizing the blend film to prepare the anion exchange membrane. Functionalization comprises a quaternization step comprising reacting halogen groups of the first polymer with tertiary amines to produce the quaternary amine groups with ion-exchange functionality. Reinforced anion exchange membranes are provided, which are produced by the disclosed methods, functionalized to yield a membrane for fuel cell(s), electrolyzer(s), reversible electrochemical device(s), desalination unit(s), etc.

公开(公告)号：US20230366127A1

公开(公告)日：2023-11-16

申请号：US18245558

申请日：2021-09-21

Applicant: GAMBRO LUNDIA AB

Inventor： Markus KETTERER ,  Carl-Philipp SCHEUERMANN ,  Juergen GRAF

IPC: D01D5/24 ,  D01D4/06 ,  D01D1/09 ,  B01D69/08

CPC classification number: D01D5/24 ,  D01D4/06 ,  D01D1/09 ,  B01D69/088 ,  D10B2331/14 ,  B01D2323/42 ,  B01D2323/50 ,  B01D2323/60

Abstract: The present disclosure relates to a center fluid distributor for a multi-fiber spinneret for producing hollow fiber membranes in a phase inversion process.