WO2002005937A3 - Asymmetric, permanently hydrophilic filtration membranes - Google Patents

Asymmetric, permanently hydrophilic filtration membranes Download PDF

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Publication number
WO2002005937A3
WO2002005937A3 PCT/US2001/041262 US0141262W WO0205937A3 WO 2002005937 A3 WO2002005937 A3 WO 2002005937A3 US 0141262 W US0141262 W US 0141262W WO 0205937 A3 WO0205937 A3 WO 0205937A3
Authority
WO
WIPO (PCT)
Prior art keywords
membranes
asymmetric
filtration membranes
hydrophilic
permanently hydrophilic
Prior art date
Application number
PCT/US2001/041262
Other languages
French (fr)
Other versions
WO2002005937A2 (en
WO2002005937A8 (en
Inventor
I-Fan Wang
Richard Mcdonogh
Original Assignee
Usf Filtration & Separations
I-Fan Wang
Richard Mcdonogh
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 Usf Filtration & Separations, I-Fan Wang, Richard Mcdonogh filed Critical Usf Filtration & Separations
Priority to AU2001277264A priority Critical patent/AU2001277264A1/en
Publication of WO2002005937A2 publication Critical patent/WO2002005937A2/en
Publication of WO2002005937A3 publication Critical patent/WO2002005937A3/en
Publication of WO2002005937A8 publication Critical patent/WO2002005937A8/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
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011—Casting solutions therefor
    • B01D67/00111—Polymer pretreatment in the casting solutions
    • 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
    • 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
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0013—Casting processes
    • 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
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/022—Asymmetric membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/04—Characteristic thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/36—Hydrophilic membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/38—Hydrophobic membranes

Abstract

Asymmetric microfiltration and loose ultrafiltration membranes with permanent hydrophilic groups in the matrix are described. The membranes are internally hydrophilic and non-leachable. The membranes are prepared from a casting solution containing polysulfone and an additional hydrophilic polymer component, such as polyvinylpyrrolidone, which imparts an interpenetrating, permanent hydrophilic group to the membrane. The membranes combine high water flow rates with integrity testability by conventional diffusion methods.
PCT/US2001/041262 2000-07-14 2001-07-05 Asymmetric, permanently hydrophilic filtration membranes WO2002005937A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001277264A AU2001277264A1 (en) 2000-07-14 2001-07-05 Asymmetric, permanently hydrophilic filtration membranes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61666600A 2000-07-14 2000-07-14
US09/616,666 2000-07-14

Publications (3)

Publication Number Publication Date
WO2002005937A2 WO2002005937A2 (en) 2002-01-24
WO2002005937A3 true WO2002005937A3 (en) 2002-08-29
WO2002005937A8 WO2002005937A8 (en) 2003-10-30

Family

ID=24470466

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/041262 WO2002005937A2 (en) 2000-07-14 2001-07-05 Asymmetric, permanently hydrophilic filtration membranes

Country Status (2)

Country Link
AU (1) AU2001277264A1 (en)
WO (1) WO2002005937A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3655060A4 (en) * 2017-07-19 2021-04-14 Richard Mcdonogh Microporous material and systems and methods for making the same
EP4037813A4 (en) * 2019-10-01 2023-10-18 Entegris, Inc. Membranes with reduced particle formation
EP4061513A1 (en) * 2019-11-21 2022-09-28 EMD Millipore Corporation Microfiltration membrane
CN113877438B (en) * 2020-07-03 2024-04-16 杭州科百特科技有限公司 Nanoscale polymer filtering membrane and preparation method and application thereof
CN113877439B (en) * 2020-07-03 2024-04-16 杭州科百特科技有限公司 Polymer filter membrane mixed by coarse and fine fibers and preparation method and application thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629563A (en) * 1980-03-14 1986-12-16 Brunswick Corporation Asymmetric membranes
DE4000825A1 (en) * 1990-01-13 1990-05-03 Horst Dipl Chem Dr Perl Hydrophilic membrane filters of polysulphone for micro-filtration - obtd. from solns. of polysulphone in N-methyl:pyrrolidone and polyethylene glycol, with addn. of polyvinyl-pyrrolidone
US5188734A (en) * 1991-03-26 1993-02-23 Memtec America Corporation Ultraporous and microporous integral membranes
EP0568045A1 (en) * 1992-04-29 1993-11-03 Kuraray Co., Ltd. Polysulfone-based hollow fiber membrane and process for manufacturing the same
WO1996040421A1 (en) * 1995-06-07 1996-12-19 Memtec America Corporation Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure
US6045899A (en) * 1996-12-12 2000-04-04 Usf Filtration & Separations Group, Inc. Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4629563A (en) * 1980-03-14 1986-12-16 Brunswick Corporation Asymmetric membranes
US4629563B1 (en) * 1980-03-14 1997-06-03 Memtec North America Asymmetric membranes
DE4000825A1 (en) * 1990-01-13 1990-05-03 Horst Dipl Chem Dr Perl Hydrophilic membrane filters of polysulphone for micro-filtration - obtd. from solns. of polysulphone in N-methyl:pyrrolidone and polyethylene glycol, with addn. of polyvinyl-pyrrolidone
US5188734A (en) * 1991-03-26 1993-02-23 Memtec America Corporation Ultraporous and microporous integral membranes
EP0568045A1 (en) * 1992-04-29 1993-11-03 Kuraray Co., Ltd. Polysulfone-based hollow fiber membrane and process for manufacturing the same
WO1996040421A1 (en) * 1995-06-07 1996-12-19 Memtec America Corporation Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure
US6045899A (en) * 1996-12-12 2000-04-04 Usf Filtration & Separations Group, Inc. Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters

Also Published As

Publication number Publication date
AU2001277264A1 (en) 2002-01-30
WO2002005937A2 (en) 2002-01-24
WO2002005937A8 (en) 2003-10-30

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