JPH01180208A - 複合半透膜の製造方法およびその膜 - Google Patents
複合半透膜の製造方法およびその膜Info
- Publication number
- JPH01180208A JPH01180208A JP63004317A JP431788A JPH01180208A JP H01180208 A JPH01180208 A JP H01180208A JP 63004317 A JP63004317 A JP 63004317A JP 431788 A JP431788 A JP 431788A JP H01180208 A JPH01180208 A JP H01180208A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- aromatic amine
- polyfunctional
- semipermeable membrane
- contg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
- B01D69/125—In situ manufacturing by polymerisation, polycondensation, cross-linking or chemical reaction
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63004317A JPH01180208A (ja) | 1988-01-11 | 1988-01-11 | 複合半透膜の製造方法およびその膜 |
| US07/415,347 US5051178A (en) | 1988-01-11 | 1989-01-10 | Process of producing composite semipermeable membrane |
| PCT/JP1989/000019 WO1989006153A1 (fr) | 1988-01-11 | 1989-01-10 | Procede de production d'une membrane composite semi-permeable |
| DE68916343T DE68916343T2 (de) | 1988-01-11 | 1989-01-10 | Verfahren zur herstellung von halbdurchlässigen komposit- membranen. |
| EP89901294A EP0357781B1 (en) | 1988-01-11 | 1989-01-10 | Process for producing composite semipermeable membrane |
| AT89901294T ATE107538T1 (de) | 1988-01-11 | 1989-01-10 | Verfahren zur herstellung von halbdurchlässigen komposit- membranen. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63004317A JPH01180208A (ja) | 1988-01-11 | 1988-01-11 | 複合半透膜の製造方法およびその膜 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01180208A true JPH01180208A (ja) | 1989-07-18 |
| JPH0568293B2 JPH0568293B2 (2) | 1993-09-28 |
Family
ID=11581097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63004317A Granted JPH01180208A (ja) | 1988-01-11 | 1988-01-11 | 複合半透膜の製造方法およびその膜 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5051178A (2) |
| EP (1) | EP0357781B1 (2) |
| JP (1) | JPH01180208A (2) |
| AT (1) | ATE107538T1 (2) |
| DE (1) | DE68916343T2 (2) |
| WO (1) | WO1989006153A1 (2) |
Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0787525A1 (en) | 1996-01-24 | 1997-08-06 | Nitto Denko Corporation | Highly permeable composite reverse osmosis membrane |
| US5989426A (en) * | 1995-07-05 | 1999-11-23 | Nitto Denko Corp. | Osmosis membrane |
| US6024873A (en) * | 1996-03-21 | 2000-02-15 | Nitto Denko Corporation | Highly permeable composite reverse osmosis membrane and a reverse osmosis membrane module using the same |
| US7081202B2 (en) | 2001-03-19 | 2006-07-25 | Nitto Denko Corporation | Composite semipermeable membrane, production method thereof, and water treatment method using the same |
| SG135037A1 (en) * | 2003-06-18 | 2007-09-28 | Toray Industries | Composite semipermeable membrane, and production process thereof |
| WO2009001916A1 (ja) | 2007-06-28 | 2008-12-31 | Nitto Denko Corporation | 複合半透膜及びその製造方法 |
| EP2014350A2 (en) | 2001-03-19 | 2009-01-14 | Nitto Denko Corporation | Water-treating method |
| WO2009008500A1 (ja) | 2007-07-12 | 2009-01-15 | Nitto Denko Corporation | 複合半透膜 |
| US7497951B2 (en) | 2004-10-29 | 2009-03-03 | Toray Industries, Inc. | Composite semipermeable membrane, production process thereof, and element, fluid separation equipment and method for water treatment using the same |
| JP2009226358A (ja) * | 2008-03-25 | 2009-10-08 | Toray Ind Inc | 複合半透膜の製造方法 |
| US7641054B2 (en) | 2004-11-15 | 2010-01-05 | Toray Industries, Inc. | Composite semipermeable membrane, production process thereof, and element, fluid separation equipment and treatment method for boron-containing water using the same |
| WO2010035807A1 (ja) | 2008-09-26 | 2010-04-01 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
| WO2011046145A1 (ja) | 2009-10-16 | 2011-04-21 | 日東電工株式会社 | 複合半透膜の製造方法 |
| WO2011058778A1 (ja) | 2009-11-11 | 2011-05-19 | 日東電工株式会社 | 分離膜ユニット及びこれを備えた分離膜エレメント |
| WO2011122560A1 (ja) | 2010-03-30 | 2011-10-06 | 東レ株式会社 | 複合半透膜 |
| WO2013175762A1 (ja) | 2012-05-22 | 2013-11-28 | 日東電工株式会社 | 非水電解質蓄電デバイス用セパレータの製造方法、及びエポキシ樹脂多孔質膜の製造方法 |
| US8602222B2 (en) | 2005-12-16 | 2013-12-10 | Toray Industries, Inc. | Composite semipermeable membranes, methods for production thereof and uses thereof |
| US8739977B2 (en) | 2009-03-31 | 2014-06-03 | Toray Industries, Inc. | Composite semipermeable membrane and method for producing the same |
| WO2016002821A1 (ja) * | 2014-06-30 | 2016-01-07 | 東レ株式会社 | 複合半透膜 |
| WO2016002819A1 (ja) * | 2014-06-30 | 2016-01-07 | 東レ株式会社 | 複合半透膜 |
| WO2019054119A1 (ja) | 2017-09-15 | 2019-03-21 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
| EP3626332A1 (en) | 2018-09-20 | 2020-03-25 | Nitto Denko Corporation | Separation membrane |
| EP3626331A1 (en) | 2018-09-20 | 2020-03-25 | Nitto Denko Corporation | Separation membrane |
| WO2020183786A1 (ja) | 2019-03-12 | 2020-09-17 | 日東電工株式会社 | 硫酸イオン除去システム及び方法 |
| EP4249106A1 (en) | 2022-03-24 | 2023-09-27 | Nitto Denko Corporation | Composite semipermeable membrane and spiral membrane element |
| WO2024122107A1 (ja) | 2022-12-08 | 2024-06-13 | 日東電工株式会社 | 複合半透膜、及びスパイラル型膜エレメント |
| EP4389266A1 (en) | 2022-12-19 | 2024-06-26 | Nitto Denko Corporation | Method for preserving composite semipermeable membrane, preservation solution, and spiral membrane element |
Families Citing this family (49)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3031763B2 (ja) * | 1990-09-14 | 2000-04-10 | 日東電工株式会社 | 複合逆浸透膜およびその製造方法 |
| DK0503596T3 (da) * | 1991-03-12 | 1996-07-29 | Toray Industries | Fremgangsmåde til fremstilling af en semipermeabel kompositmembran |
| US5234598A (en) * | 1992-05-13 | 1993-08-10 | Allied-Signal Inc. | Thin-film composite membrane |
| US5368889A (en) * | 1993-04-16 | 1994-11-29 | The Dow Chemical Company | Method of making thin film composite membranes |
| DE69410816T2 (de) * | 1993-10-29 | 1998-12-03 | Exxon Chemical Patents Inc., Linden, N.J. | Methode zur trennung von metallen und alkoholen von einem emulgierten organischen/wässrigen abwasser |
| JPH0810595A (ja) * | 1994-06-29 | 1996-01-16 | Nitto Denko Corp | 複合逆浸透膜 |
| US5693227A (en) * | 1994-11-17 | 1997-12-02 | Ionics, Incorporated | Catalyst mediated method of interfacial polymerization on a microporous support, and polymers, fibers, films and membranes made by such method |
| US5614099A (en) * | 1994-12-22 | 1997-03-25 | Nitto Denko Corporation | Highly permeable composite reverse osmosis membrane, method of producing the same, and method of using the same |
| KR0183370B1 (ko) * | 1995-07-07 | 1999-04-15 | 김은영 | 방향족 폴리에스테르 또는 방향족 폴리에스테르와 폴리아미드 공중합체의 활성층을 갖는 역삼투용 복합막 |
| KR100211338B1 (ko) * | 1997-02-17 | 1999-08-02 | 한형수 | 가교 폴리아미드계 역삼투 분리막의 제조방법 |
| US5876602A (en) * | 1997-11-04 | 1999-03-02 | The Dow Chemical Company | Treatment of composite polyamide membranes to improve performance |
| CN1195576C (zh) * | 1999-09-28 | 2005-04-06 | 东丽株式会社 | 复合半透膜的制造方法 |
| JP4289757B2 (ja) | 2000-03-23 | 2009-07-01 | 日東電工株式会社 | 複合逆浸透膜の製造方法 |
| US6837996B2 (en) * | 2000-05-23 | 2005-01-04 | Ge Osmonics, Inc. | Polysulfonamide matrices |
| US6783711B2 (en) * | 2000-05-23 | 2004-08-31 | Ge Osmonics, Inc. | Process for preparing a sulfonamide polymer matrix |
| CN1289177C (zh) * | 2000-05-23 | 2006-12-13 | Ge;奥斯莫尼克斯公司 | 聚磺酰胺基体及其制备方法 |
| AU2001264921B2 (en) * | 2000-05-23 | 2006-08-24 | Osmonics, Inc. | Modified sulfonamide polymers |
| JP2003080042A (ja) * | 2001-09-10 | 2003-03-18 | Nitto Denko Corp | 複合半透膜及びその製造方法 |
| KR20070011394A (ko) * | 2004-03-23 | 2007-01-24 | 더 클로록스 캄파니 | 차아염소산염의 희석법 |
| US20050232847A1 (en) * | 2004-04-20 | 2005-10-20 | Bromberg Steven E | Method for diluting hypochlorite |
| JP2006102624A (ja) * | 2004-10-05 | 2006-04-20 | Nitto Denko Corp | 逆浸透膜及びその製造方法 |
| CN101296743B (zh) * | 2005-08-24 | 2013-04-10 | 加利福尼亚大学董事会 | 用于纳米级物质快速传输的膜 |
| US20090148342A1 (en) * | 2007-10-29 | 2009-06-11 | Bromberg Steven E | Hypochlorite Technology |
| WO2009148959A2 (en) * | 2008-05-29 | 2009-12-10 | Lawrence Livermore National Security, Llc | Membranes with functionalized carbon nanotube pores for selective transport |
| US8968828B2 (en) | 2011-01-24 | 2015-03-03 | Dow Global Technologies Llc | Composite polyamide membrane |
| CN103764264B (zh) | 2011-08-31 | 2016-11-16 | 陶氏环球技术有限责任公司 | 源自包含胺反应性官能团和含磷官能团的单体的复合聚酰胺膜 |
| WO2013048764A1 (en) | 2011-09-29 | 2013-04-04 | Dow Global Technologies Llc | Method for preparing high purity mono-hydrolyzed acyl halide compound |
| ES2806675T3 (es) | 2012-01-06 | 2021-02-18 | Ddp Specialty Electronic Mat Us Inc | Método de preparación de una membrana de poliamida de material compuesto |
| KR20130131259A (ko) * | 2012-05-23 | 2013-12-03 | 주식회사 엘지화학 | 초기 투과 유량이 우수한 폴리아미드계 역삼투 분리막 및 이의 제조방법 |
| JP5923793B2 (ja) | 2012-05-31 | 2016-05-25 | エルジー・ケム・リミテッド | カルボジイミド系化合物を含む高透過逆浸透膜及びこれを製造する方法 |
| CN104470627B (zh) | 2012-07-19 | 2018-05-11 | 陶氏环球技术有限责任公司 | 复合聚酰胺膜 |
| CN104918687A (zh) | 2013-01-14 | 2015-09-16 | 陶氏环球技术有限责任公司 | 使用非极性溶剂的掺合物经由界面聚合制造复合聚酰胺膜 |
| WO2014109947A1 (en) | 2013-01-14 | 2014-07-17 | Dow Global Technologies Llc | Composite polyamide membrane comprising substituted benzamide monomer |
| US9289729B2 (en) | 2013-03-16 | 2016-03-22 | Dow Global Technologies Llc | Composite polyamide membrane derived from carboxylic acid containing acyl halide monomer |
| US9051417B2 (en) | 2013-03-16 | 2015-06-09 | Dow Global Technologies Llc | Method for solubilizing carboxylic acid-containing compound in hydrocarbon solvent |
| US9051227B2 (en) | 2013-03-16 | 2015-06-09 | Dow Global Technologies Llc | In-situ method for preparing hydrolyzed acyl halide compound |
| WO2014179024A1 (en) | 2013-05-03 | 2014-11-06 | Dow Global Technologies Llc | Composite polyamide membrane derived from an aliphatic acyclic tertiary amine compound |
| JP6577468B2 (ja) | 2013-12-02 | 2019-09-18 | ダウ グローバル テクノロジーズ エルエルシー | 亜硝酸で後処理される複合ポリアミド膜 |
| WO2015084512A1 (en) | 2013-12-02 | 2015-06-11 | Dow Global Technologies Llc | Composite polyamide membrane treated with dihyroxyaryl compounds and nitrous acid |
| ES2677994T3 (es) | 2014-01-09 | 2018-08-08 | Dow Global Technologies Llc | Membrana de poliamida de material compuesto con contenido azoico preferido |
| EP3092060B1 (en) | 2014-01-09 | 2018-07-25 | Dow Global Technologies LLC | Composite polyamide membrane having azo content and high acid content |
| CN105873666B (zh) | 2014-01-09 | 2019-11-01 | 陶氏环球技术有限责任公司 | 具有高酸含量和低偶氮含量的复合聚酰胺膜 |
| GB201403432D0 (en) | 2014-02-27 | 2014-04-16 | Univ Leuven Kath | Improved method for synthesis of composite membranes |
| JP2017513703A (ja) | 2014-04-28 | 2017-06-01 | ダウ グローバル テクノロジーズ エルエルシー | 亜硝酸で後処理される複合ポリアミド膜 |
| KR102359211B1 (ko) | 2014-05-14 | 2022-02-07 | 다우 글로벌 테크놀로지스 엘엘씨 | 아질산으로 후처리된 복합 폴리아미드 막 |
| US11439708B2 (en) | 2014-10-06 | 2022-09-13 | Lawrence Livermore National Security, Llc | Nanotube trans-membrane channels mimicking biological porins |
| US10155203B2 (en) * | 2016-03-03 | 2018-12-18 | Lg Nanoh2O, Inc. | Methods of enhancing water flux of a TFC membrane using oxidizing and reducing agents |
| DE202019002884U1 (de) | 2019-07-05 | 2019-07-31 | Gunter Tannhäuser | Teleskopmast für Segelboote und -Schiffe |
| WO2021219692A1 (en) | 2020-04-28 | 2021-11-04 | Katholieke Universiteit Leuven | Thin-film composite membranes synthesized by multi-step coating methods |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824303A (ja) * | 1981-08-03 | 1983-02-14 | Teijin Ltd | 耐酸化性複合半透膜 |
| JPS59179103A (ja) * | 1983-03-30 | 1984-10-11 | Teijin Ltd | 複合半透膜及びその製造方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52152879A (en) * | 1976-06-16 | 1977-12-19 | Toray Ind Inc | Thin membrane for reverse osmosis of high capacity |
| JPS59179111A (ja) * | 1983-03-31 | 1984-10-11 | Teijin Ltd | 耐久性複合膜の製造方法 |
| US4643829A (en) * | 1984-07-30 | 1987-02-17 | E. I. Du Pont De Nemours And Company | Multilayer reverse osmosis membrane in which one layer is poly-meta-phenylene cyclohexane-1,3,5-tricarboxamide |
| US4661254A (en) * | 1985-05-23 | 1987-04-28 | Uop Inc. | Chlorine-resistant semipermeable membranes |
| US4761234A (en) * | 1985-08-05 | 1988-08-02 | Toray Industries, Inc. | Interfacially synthesized reverse osmosis membrane |
| EP0227043A3 (en) * | 1985-12-19 | 1988-01-27 | Sumitomo Chemical Company, Limited | Composite semipermeable membrane and process for producing the same |
| JPS62247807A (ja) * | 1986-04-18 | 1987-10-28 | Toray Ind Inc | 半透性複合膜の製法 |
| US4626468A (en) * | 1986-04-23 | 1986-12-02 | E. I. Du Pont De Nemours And Company | Microporous support layer with interfacially polymerized copolyamide thereon |
| US4749488A (en) * | 1987-10-08 | 1988-06-07 | E. I. Du Pont De Nemours And Company | Multilayer reverse osmosis membrane in which one layer is poly-meta-phenylene tetrahydrofuran-2,3,4,5-tetracarboxamide |
-
1988
- 1988-01-11 JP JP63004317A patent/JPH01180208A/ja active Granted
-
1989
- 1989-01-10 AT AT89901294T patent/ATE107538T1/de not_active IP Right Cessation
- 1989-01-10 EP EP89901294A patent/EP0357781B1/en not_active Expired - Lifetime
- 1989-01-10 DE DE68916343T patent/DE68916343T2/de not_active Expired - Fee Related
- 1989-01-10 WO PCT/JP1989/000019 patent/WO1989006153A1/ja not_active Ceased
- 1989-01-10 US US07/415,347 patent/US5051178A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5824303A (ja) * | 1981-08-03 | 1983-02-14 | Teijin Ltd | 耐酸化性複合半透膜 |
| JPS59179103A (ja) * | 1983-03-30 | 1984-10-11 | Teijin Ltd | 複合半透膜及びその製造方法 |
Cited By (36)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5989426A (en) * | 1995-07-05 | 1999-11-23 | Nitto Denko Corp. | Osmosis membrane |
| US6171497B1 (en) | 1996-01-24 | 2001-01-09 | Nitto Denko Corporation | Highly permeable composite reverse osmosis membrane |
| EP0787525A1 (en) | 1996-01-24 | 1997-08-06 | Nitto Denko Corporation | Highly permeable composite reverse osmosis membrane |
| US6024873A (en) * | 1996-03-21 | 2000-02-15 | Nitto Denko Corporation | Highly permeable composite reverse osmosis membrane and a reverse osmosis membrane module using the same |
| US7081202B2 (en) | 2001-03-19 | 2006-07-25 | Nitto Denko Corporation | Composite semipermeable membrane, production method thereof, and water treatment method using the same |
| EP2014350A2 (en) | 2001-03-19 | 2009-01-14 | Nitto Denko Corporation | Water-treating method |
| SG135037A1 (en) * | 2003-06-18 | 2007-09-28 | Toray Industries | Composite semipermeable membrane, and production process thereof |
| US7279097B2 (en) | 2003-06-18 | 2007-10-09 | Toray Industries, Inc. | Composite semipermeable membrane, and production process thereof |
| US7497951B2 (en) | 2004-10-29 | 2009-03-03 | Toray Industries, Inc. | Composite semipermeable membrane, production process thereof, and element, fluid separation equipment and method for water treatment using the same |
| US7641054B2 (en) | 2004-11-15 | 2010-01-05 | Toray Industries, Inc. | Composite semipermeable membrane, production process thereof, and element, fluid separation equipment and treatment method for boron-containing water using the same |
| US8602222B2 (en) | 2005-12-16 | 2013-12-10 | Toray Industries, Inc. | Composite semipermeable membranes, methods for production thereof and uses thereof |
| WO2009001916A1 (ja) | 2007-06-28 | 2008-12-31 | Nitto Denko Corporation | 複合半透膜及びその製造方法 |
| WO2009008500A1 (ja) | 2007-07-12 | 2009-01-15 | Nitto Denko Corporation | 複合半透膜 |
| JP2009226358A (ja) * | 2008-03-25 | 2009-10-08 | Toray Ind Inc | 複合半透膜の製造方法 |
| WO2010035807A1 (ja) | 2008-09-26 | 2010-04-01 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
| US8739977B2 (en) | 2009-03-31 | 2014-06-03 | Toray Industries, Inc. | Composite semipermeable membrane and method for producing the same |
| WO2011046145A1 (ja) | 2009-10-16 | 2011-04-21 | 日東電工株式会社 | 複合半透膜の製造方法 |
| WO2011058778A1 (ja) | 2009-11-11 | 2011-05-19 | 日東電工株式会社 | 分離膜ユニット及びこれを備えた分離膜エレメント |
| WO2011122560A1 (ja) | 2010-03-30 | 2011-10-06 | 東レ株式会社 | 複合半透膜 |
| WO2013175762A1 (ja) | 2012-05-22 | 2013-11-28 | 日東電工株式会社 | 非水電解質蓄電デバイス用セパレータの製造方法、及びエポキシ樹脂多孔質膜の製造方法 |
| JPWO2016002821A1 (ja) * | 2014-06-30 | 2017-04-27 | 東レ株式会社 | 複合半透膜 |
| JPWO2016002819A1 (ja) * | 2014-06-30 | 2017-04-27 | 東レ株式会社 | 複合半透膜 |
| WO2016002821A1 (ja) * | 2014-06-30 | 2016-01-07 | 東レ株式会社 | 複合半透膜 |
| WO2016002819A1 (ja) * | 2014-06-30 | 2016-01-07 | 東レ株式会社 | 複合半透膜 |
| WO2019054119A1 (ja) | 2017-09-15 | 2019-03-21 | 日東電工株式会社 | 複合半透膜及びその製造方法 |
| US12239942B2 (en) | 2018-09-20 | 2025-03-04 | Nitto Denko Corporation | Separation membrane |
| EP3626332A1 (en) | 2018-09-20 | 2020-03-25 | Nitto Denko Corporation | Separation membrane |
| EP3626331A1 (en) | 2018-09-20 | 2020-03-25 | Nitto Denko Corporation | Separation membrane |
| US10913034B2 (en) | 2018-09-20 | 2021-02-09 | Nitto Denko Corporation | Separation membrane |
| US11219870B2 (en) | 2018-09-20 | 2022-01-11 | Nitto Denko Corporation | Separation membrane |
| WO2020183786A1 (ja) | 2019-03-12 | 2020-09-17 | 日東電工株式会社 | 硫酸イオン除去システム及び方法 |
| US11396460B2 (en) | 2019-03-12 | 2022-07-26 | Nitto Denko Corporation | Sulfate ion removal system and method for removing sulfate ion |
| EP4249106A1 (en) | 2022-03-24 | 2023-09-27 | Nitto Denko Corporation | Composite semipermeable membrane and spiral membrane element |
| WO2024122107A1 (ja) | 2022-12-08 | 2024-06-13 | 日東電工株式会社 | 複合半透膜、及びスパイラル型膜エレメント |
| EP4631607A1 (en) | 2022-12-08 | 2025-10-15 | Nitto Denko Corporation | Composite semipermeable membrane, and spiral-type membrane element |
| EP4389266A1 (en) | 2022-12-19 | 2024-06-26 | Nitto Denko Corporation | Method for preserving composite semipermeable membrane, preservation solution, and spiral membrane element |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0568293B2 (2) | 1993-09-28 |
| DE68916343D1 (de) | 1994-07-28 |
| EP0357781B1 (en) | 1994-06-22 |
| WO1989006153A1 (fr) | 1989-07-13 |
| ATE107538T1 (de) | 1994-07-15 |
| EP0357781A4 (en) | 1990-02-05 |
| DE68916343T2 (de) | 1995-01-19 |
| EP0357781A1 (en) | 1990-03-14 |
| US5051178A (en) | 1991-09-24 |
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