WO1998029478A1 - Membranes semi-permeables polysulfones filees par fusion et leurs procedes de fabrication - Google Patents

Membranes semi-permeables polysulfones filees par fusion et leurs procedes de fabrication Download PDF

Info

Publication number
WO1998029478A1
WO1998029478A1 PCT/US1997/024087 US9724087W WO9829478A1 WO 1998029478 A1 WO1998029478 A1 WO 1998029478A1 US 9724087 W US9724087 W US 9724087W WO 9829478 A1 WO9829478 A1 WO 9829478A1
Authority
WO
WIPO (PCT)
Prior art keywords
polysulfone
ester
acid
solvent
composition
Prior art date
Application number
PCT/US1997/024087
Other languages
English (en)
Inventor
Timothy B. Meluch
Chung-Yuan Chiang
Hamid Jaanine
Thanh Nguyen
Kees Ruzius
Lalith K. Silva
George Washington
Original Assignee
Althin Medical, Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Althin Medical, Inc. filed Critical Althin Medical, Inc.
Priority to KR10-1999-7005987A priority Critical patent/KR100523499B1/ko
Priority to CA002272364A priority patent/CA2272364A1/fr
Priority to PL97334378A priority patent/PL334378A1/xx
Priority to EP97953516A priority patent/EP0951498A1/fr
Priority to BR9714445A priority patent/BR9714445A/pt
Priority to JP53028098A priority patent/JP2001507741A/ja
Priority to AU57248/98A priority patent/AU736217B2/en
Priority to IL13012997A priority patent/IL130129A0/xx
Publication of WO1998029478A1 publication Critical patent/WO1998029478A1/fr
Priority to IL130129A priority patent/IL130129A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/002—Organic membrane manufacture from melts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011—Casting solutions therefor
    • B01D67/00113—Pretreatment of the casting solutions, e.g. thermal treatment or ageing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011—Casting solutions therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • 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
    • B01D69/08—Hollow fibre membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/66—Polymers having sulfur in the main chain, with or without nitrogen, oxygen or carbon only
    • B01D71/68—Polysulfones; Polyethersulfones
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • B01D2323/081—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/12—Specific ratios of components used
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2381/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen, or carbon only; Polysulfones; Derivatives of such polymers
    • C08J2381/06—Polysulfones; Polyethersulfones

Abstract

L'invention concerne, en premier lieu, une composition qui permet de fabriquer une membrane semi-perméable homogène. Ladite composition comprend (1) un composé polysulfone, (2) un solvant, tel que sulfolane, antipyrine, δ-valérolactam, diéthyl phtalate et des mélanges de ces produits, et (3) une substance non solvante, telle que poly(éthylène glycol), di(éthylène glycol), tri(éthylène glycol), glycérol et des mélanges de ces produits. Selon un autre aspect, la présente invention concerne des procédés permettant de fabriquer des membranes semi-perméables en mélangeant de façon homogène la composition de composé polysulfone, le solvant et la substance non solvante, en faisant fondre ladite composition et en filant par fusion la composition fondue. Selon un autre aspect encore, la présente invention concerne des membranes semi-perméables, homogènes et filées par fusion, particulièrement utiles pour les procédés de séparation de liquide, tels que, mais pas exclusivement, la microfiltration, l'ultrafiltration, la dialyse et l'osmose inverse.
PCT/US1997/024087 1996-12-31 1997-12-30 Membranes semi-permeables polysulfones filees par fusion et leurs procedes de fabrication WO1998029478A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
KR10-1999-7005987A KR100523499B1 (ko) 1996-12-31 1997-12-30 용융-방사된 폴리설폰 반투과성 멤브레인 및 이를 제조하는 방법
CA002272364A CA2272364A1 (fr) 1996-12-31 1997-12-30 Membranes semi-permeables polysulfones filees par fusion et leurs procedes de fabrication
PL97334378A PL334378A1 (en) 1996-12-31 1997-12-30 Polysulphonic semipermeable membranes being spun of a molten material and methods of making such membranes
EP97953516A EP0951498A1 (fr) 1996-12-31 1997-12-30 Membranes semi-permeables polysulfones filees par fusion et leurs procedes de fabrication
BR9714445A BR9714445A (pt) 1996-12-31 1997-12-30 Membranas semipermeáveis de polissulfona por fiação do material fundido e métodos para fabricação das mesmas
JP53028098A JP2001507741A (ja) 1996-12-31 1997-12-30 溶融紡糸ポリスルホン半透膜及びその製造方法
AU57248/98A AU736217B2 (en) 1996-12-31 1997-12-30 Melt-spun polysulfone semipermeable membranes and methods for making the same
IL13012997A IL130129A0 (en) 1996-12-31 1997-12-30 Polysulfone semipermeable membranes and methods for making the same
IL130129A IL130129A (en) 1996-12-31 1999-05-25 Semi-permeable polysulfone membranes and methods for their preparation by means of melting the melt

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US77473296A 1996-12-31 1996-12-31
US08/774,732 1996-12-31
US93268097A 1997-09-18 1997-09-18
US08/932,680 1997-09-18

Publications (1)

Publication Number Publication Date
WO1998029478A1 true WO1998029478A1 (fr) 1998-07-09

Family

ID=27118948

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/024087 WO1998029478A1 (fr) 1996-12-31 1997-12-30 Membranes semi-permeables polysulfones filees par fusion et leurs procedes de fabrication

Country Status (13)

Country Link
EP (1) EP0951498A1 (fr)
JP (2) JP2001507741A (fr)
KR (1) KR100523499B1 (fr)
CN (1) CN1149250C (fr)
AU (1) AU736217B2 (fr)
BR (1) BR9714445A (fr)
CA (1) CA2272364A1 (fr)
IL (2) IL130129A0 (fr)
MX (1) MX210067B (fr)
RU (1) RU2198725C2 (fr)
SG (1) SG97184A1 (fr)
TR (1) TR199901514T2 (fr)
WO (1) WO1998029478A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001087633A (ja) * 1999-09-21 2001-04-03 Asahi Kasei Corp 中空糸状多孔膜の溶融製膜方法
JP2001087632A (ja) * 1999-09-21 2001-04-03 Asahi Kasei Corp 中空糸状多孔膜の製膜方法
JP2001087631A (ja) * 1999-09-21 2001-04-03 Asahi Kasei Corp 溶融製膜方法
WO2004058385A1 (fr) * 2002-12-20 2004-07-15 Baxter International Inc. Membranes semi-permeables a base de polysulfone filees par fusion et leurs procedes de fabrication
EP1506807A2 (fr) * 2003-08-13 2005-02-16 Generon IGS, Inc. Membrane pour la déshydratation de l'air
US7077961B2 (en) 2000-12-08 2006-07-18 Hospal Industrie Apparatus for extracorporeal blood or plasma treatment comprising a wet semi-permeable membrane and methods for making the same
US7294174B2 (en) 2003-08-13 2007-11-13 Generon Igs, Inc. Air dehydration membrane
WO2019042749A1 (fr) * 2017-08-28 2019-03-07 Basf Se Fabrication de membrane avec un cosolvant dans la solution de dopage de polymère
CN112535955A (zh) * 2020-11-12 2021-03-23 中国科学院过程工程研究所 一种脱色膜及其制备方法和应用

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4564758B2 (ja) * 2004-01-09 2010-10-20 株式会社クラレ フッ化ビニリデン系樹脂多孔膜の製造方法
RU2562651C2 (ru) * 2012-10-23 2015-09-10 Открытое акционерное общество "Научно-исследовательский институт электронных материалов", (ОАО "НИИЭМ") Нанокомпозитный полиарилсульфоновый пленочный материал
JP6309537B2 (ja) * 2012-12-19 2018-04-11 ソルヴェイ（ソシエテ アノニム） スルホンポリマー膜の製造方法
DE102016102782A1 (de) * 2016-02-17 2017-09-14 B. Braun Avitum Ag Dialysemembran und Verfahren zu ihrer Herstellung
CN106189235B (zh) * 2016-07-21 2017-10-24 金发科技股份有限公司 一种砜聚合物组合物及由其组成的热塑性模塑组合物与应用
CN108862730B (zh) * 2018-07-17 2021-11-19 杭州达利富丝绸染整有限公司 一种纺织染色残液的回收利用方法
CN114262945A (zh) * 2021-12-30 2022-04-01 长乐恒申合纤科技有限公司 一种母丝单孔单板生产方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794310A (en) * 1980-12-05 1982-06-11 Daicel Chem Ind Ltd Production of semipermeable membrane made of polysulfone
JPS588516A (ja) * 1981-07-08 1983-01-18 Toyobo Co Ltd ポリスルホン系分離膜の製造方法
EP0121911A2 (fr) * 1983-04-09 1984-10-17 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Milieu filtrant sous forme de fibre creuse et son procédé de fabrication
WO1990005018A1 (fr) * 1988-10-31 1990-05-17 Sepracor, Inc. Appareil de separation par affinite a l'aide d'une membrane
JPH05148383A (ja) * 1991-10-03 1993-06-15 Mitsubishi Rayon Co Ltd ポリスルホン系多孔質膜及びその製造方法
JPH05262910A (ja) * 1992-03-18 1993-10-12 Mitsubishi Rayon Co Ltd ポリスルホン系連続微小気泡体及びその製造方法
EP0568045A1 (fr) * 1992-04-29 1993-11-03 Kuraray Co., Ltd. Membrane en fibre creuse à base de polysulfone et procédé pour sa fabrication

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993560A (en) * 1975-02-27 1976-11-23 Halpern Richard M Method and apparatus for monitoring cellular activities
US4276173A (en) * 1977-07-05 1981-06-30 Cordis Dow Corp. Cellulose acetate hollow fiber and method for making same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5794310A (en) * 1980-12-05 1982-06-11 Daicel Chem Ind Ltd Production of semipermeable membrane made of polysulfone
JPS588516A (ja) * 1981-07-08 1983-01-18 Toyobo Co Ltd ポリスルホン系分離膜の製造方法
EP0121911A2 (fr) * 1983-04-09 1984-10-17 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Milieu filtrant sous forme de fibre creuse et son procédé de fabrication
WO1990005018A1 (fr) * 1988-10-31 1990-05-17 Sepracor, Inc. Appareil de separation par affinite a l'aide d'une membrane
JPH05148383A (ja) * 1991-10-03 1993-06-15 Mitsubishi Rayon Co Ltd ポリスルホン系多孔質膜及びその製造方法
JPH05262910A (ja) * 1992-03-18 1993-10-12 Mitsubishi Rayon Co Ltd ポリスルホン系連続微小気泡体及びその製造方法
EP0568045A1 (fr) * 1992-04-29 1993-11-03 Kuraray Co., Ltd. Membrane en fibre creuse à base de polysulfone et procédé pour sa fabrication

Non-Patent Citations (16)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 119, no. 26, 27 December 1993, Columbus, Ohio, US; abstract no. 272972, XP002064058 *
CHEMICAL ABSTRACTS, vol. 120, no. 10, 7 March 1994, Columbus, Ohio, US; abstract no. 108978, XP002064057 *
CHEMICAL ABSTRACTS, vol. 123, no. 6, 7 August 1995, Columbus, Ohio, US; abstract no. 57940, HU, JIAJUN ET AL: "Preparation of polysulfone (PSF) thermal phase inversion membrane" XP002064056 *
CHEMICAL ABSTRACTS, vol. 98, no. 24, 13 June 1983, Columbus, Ohio, US; abstract no. 199504, XP002064059 *
CHEMICAL ABSTRACTS, vol. 98, no. 4, 24 January 1983, Columbus, Ohio, US; abstract no. 17710, XP002064060 *
DATABASE WPI Section Ch Week 8229, Derwent World Patents Index; Class A26, AN 82-60285e, XP002064064 *
DATABASE WPI Section Ch Week 8308, Derwent World Patents Index; Class A26, AN 83-19026k, XP002064063 *
DATABASE WPI Section Ch Week 9328, Derwent World Patents Index; Class A26, AN 93-224383, XP002064062 *
DATABASE WPI Section Ch Week 9345, Derwent World Patents Index; Class A26, AN 93-357271, XP002064061 *
I. CABASSO: "Polysulfone Hollow Fibers. I. Spinning and Properties", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 20, 1976, NEW-YORK, US, pages 2377 - 2394, XP002064055 *
I. CABASSO: "Polysulfone Hollow Fibers. II. Morphology", JOURNAL OF APPLIED POLYMER SCIENCE, vol. 21, 1977, NEW-YORK, US, pages 165 - 180, XP002064054 *
PATENT ABSTRACTS OF JAPAN vol. 006, no. 177 (C - 124) 11 September 1982 (1982-09-11) *
PATENT ABSTRACTS OF JAPAN vol. 007, no. 077 (C - 159) 30 March 1983 (1983-03-30) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 540 (C - 1115) 29 September 1993 (1993-09-29) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 032 (C - 1154) 18 January 1994 (1994-01-18) *
WATER TREAT. (1995), 10(1), 1-5 CODEN: WTREE2;ISSN: 0921-2639, 1995 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001087633A (ja) * 1999-09-21 2001-04-03 Asahi Kasei Corp 中空糸状多孔膜の溶融製膜方法
JP2001087632A (ja) * 1999-09-21 2001-04-03 Asahi Kasei Corp 中空糸状多孔膜の製膜方法
JP2001087631A (ja) * 1999-09-21 2001-04-03 Asahi Kasei Corp 溶融製膜方法
JP4605840B2 (ja) * 1999-09-21 2011-01-05 旭化成ケミカルズ株式会社 中空糸状多孔膜の製膜方法
JP4623780B2 (ja) * 1999-09-21 2011-02-02 旭化成ケミカルズ株式会社 溶融製膜方法
US7077961B2 (en) 2000-12-08 2006-07-18 Hospal Industrie Apparatus for extracorporeal blood or plasma treatment comprising a wet semi-permeable membrane and methods for making the same
WO2004058385A1 (fr) * 2002-12-20 2004-07-15 Baxter International Inc. Membranes semi-permeables a base de polysulfone filees par fusion et leurs procedes de fabrication
EP1506807A2 (fr) * 2003-08-13 2005-02-16 Generon IGS, Inc. Membrane pour la déshydratation de l'air
EP1506807A3 (fr) * 2003-08-13 2005-04-13 Generon IGS, Inc. Membrane pour la déshydratation de l'air
US7294174B2 (en) 2003-08-13 2007-11-13 Generon Igs, Inc. Air dehydration membrane
WO2019042749A1 (fr) * 2017-08-28 2019-03-07 Basf Se Fabrication de membrane avec un cosolvant dans la solution de dopage de polymère
CN112535955A (zh) * 2020-11-12 2021-03-23 中国科学院过程工程研究所 一种脱色膜及其制备方法和应用

Also Published As

Publication number Publication date
CN1242025A (zh) 2000-01-19
IL130129A (en) 2006-12-10
JP2007237178A (ja) 2007-09-20
MX9906130A (en) 2000-04-30
IL130129A0 (en) 2000-06-01
JP2001507741A (ja) 2001-06-12
KR100523499B1 (ko) 2005-10-25
MX210067B (en) 2002-09-02
EP0951498A1 (fr) 1999-10-27
AU5724898A (en) 1998-07-31
CN1149250C (zh) 2004-05-12
CA2272364A1 (fr) 1998-07-09
SG97184A1 (en) 2003-07-18
TR199901514T2 (xx) 1999-09-21
AU736217B2 (en) 2001-07-26
KR20000069825A (ko) 2000-11-25
RU2198725C2 (ru) 2003-02-20
BR9714445A (pt) 2000-03-21

Similar Documents

Publication Publication Date Title
US6218441B1 (en) Melt-spun polysulfone semipermeable membranes and methods for making the same
US7144505B2 (en) Melt-spun polysulfone semipermeable membranes and methods for making the same
AU736217B2 (en) Melt-spun polysulfone semipermeable membranes and methods for making the same
JP4656839B2 (ja) ヘイラー膜
MXPA99006130A (en) Melt-spun polysulfone semipermeable membranes and methods for making the same
EP0407684A1 (fr) Procédé pour la préparation de membranes microporeuses sous forme de films ou de fibres creuses à partir de solutions de polyétheréthercétones dans des solvants organiques polaires à point d'ébullition élevé
EP2567750B1 (fr) Membrane en fibre creuse
IE50102B1 (en) Polycarbonate/polyether copolymer membrane,a process for its preparation and use thereof
WO2001028667A1 (fr) Film microporeux thermoresistant
JP3026493B2 (ja) ポリスルホン系中空糸膜の製造方法及びポリスルホン系中空糸膜
JPH09323031A (ja) ポリスルホン系選択透過性中空糸膜
JP3169404B2 (ja) 高透水性能半透膜の製造方法
Arahman et al. Effect of hypochlorite treatment on performance of hollow fiber membrane prepared from polyethersulfone/N‐methyl‐2‐pyrrolidone/tetronic 1307 solution
JPH06128406A (ja) ポリテトラフルオロエチレン系樹脂多孔性膜の製法
TW416973B (en) Melt-spun polysulfone semipermeable membranes and compositions and methods for the preparation thereof
JP2739510B2 (ja) 多孔質膜の製造方法及びそれに用いられるミスト発生装置
JP2008188571A (ja) 親水化された芳香族エーテル系高分子膜の製造方法
JPS63224702A (ja) ポリプロピレン多孔質膜およびその製造方法
JPH08141377A (ja) 多孔質分離膜
AU2003245463A1 (en) Halar membranes

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 97181040.0

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH GM GW HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZW AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SZ UG ZW AT BE CH DE DK ES FI FR GB GR IE IT

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2272364

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 1997953516

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 1998 530280

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: PA/a/1999/006130

Country of ref document: MX

Ref document number: 1999/01514

Country of ref document: TR

WWE Wipo information: entry into national phase

Ref document number: 1019997005987

Country of ref document: KR

Ref document number: P990207A

Country of ref document: HR

WWE Wipo information: entry into national phase

Ref document number: 57248/98

Country of ref document: AU

WWP Wipo information: published in national office

Ref document number: 1997953516

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1019997005987

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 57248/98

Country of ref document: AU

WWR Wipo information: refused in national office

Ref document number: 1019997005987

Country of ref document: KR