CA2502577A1 - Hydrophilic microporous membrane - Google Patents

Hydrophilic microporous membrane Download PDF

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Publication number
CA2502577A1
CA2502577A1 CA002502577A CA2502577A CA2502577A1 CA 2502577 A1 CA2502577 A1 CA 2502577A1 CA 002502577 A CA002502577 A CA 002502577A CA 2502577 A CA2502577 A CA 2502577A CA 2502577 A1 CA2502577 A1 CA 2502577A1
Authority
CA
Canada
Prior art keywords
permeation rate
minutes
globulin
filtration
globulin permeation
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
Application number
CA002502577A
Other languages
French (fr)
Other versions
CA2502577C (en
Inventor
Ichiro Koguma
Fujiharu Nagoya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Kasei Medical Co Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2502577A1 publication Critical patent/CA2502577A1/en
Application granted granted Critical
Publication of CA2502577C publication Critical patent/CA2502577C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081After-treatment of organic or inorganic membranes
    • B01D67/0088Physical treatment with compounds, e.g. swelling, coating or impregnation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/04Feed pretreatment
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002Organic membrane manufacture
    • B01D67/0023Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/003Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081After-treatment of organic or inorganic membranes
    • B01D67/0093Chemical modification
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081After-treatment of organic or inorganic membranes
    • B01D67/0093Chemical modification
    • B01D67/00933Chemical modification by addition of a layer chemically bonded to the membrane
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12Composite membranes; Ultra-thin membranes
    • B01D69/1213Laminated layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/30Polyalkenyl halides
    • B01D71/32Polyalkenyl halides containing fluorine atoms
    • B01D71/34Polyvinylidene fluoride
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/91Bacteria; Microorganisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/02Hydrophilization
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/38Graft polymerization
    • B01D2323/385Graft polymerization involving radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/02Details relating to pores or porosity of the membranes
    • B01D2325/022Asymmetric membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/02Details relating to pores or porosity of the membranes
    • B01D2325/0283Pore size
    • B01D2325/02833Pore size more than 10 and up to 100 nm
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/04Characteristic thickness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/36Hydrophilic membranes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249954With chemically effective material or specified gas other than air, N, or carbon dioxide in void-containing component
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249955Void-containing component partially impregnated with adjacent component
    • Y10T428/249956Void-containing component is inorganic
    • Y10T428/249957Inorganic impregnant
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/249921Web or sheet containing structurally defined element or component
    • Y10T428/249953Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249961With gradual property change within a component

Abstract

A microporous hydrophilic membrane which comprises a thermoplastic resin, ha s been hydrophilized, and has a maximum pore diameter of 10 to 100 nm, wherein when a 3 wt.% bovine immunoglobulin at least 80 wt.% of which is accounted f or by monomers is filtered therethrough at a constant pressure of 0.3 MPa, the average permeation rate (L/m2/h) for a period of 5 minutes after filtration initiation (referred to as globulin permeation rate (A)) satisfies the following relationship (1) and the average filtration rate (L/m2/h) for a period of 5 minutes after the time when 55 minutes have passed since filtration initiation (referred to as globulin permeation rate (B)) satisfie s the following relationship (2). [Globulin permeation rate (A)] > 0.0015 .times. (maximum pore diameter (nm))2.75 (1) [Globulin permeation rate (B)]/[globulin permeation rate (A)] > 0.2 (2)
CA002502577A 2002-10-18 2003-10-17 Hydrophilic microporous membrane Expired - Lifetime CA2502577C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2002-304766 2002-10-18
JP2002304766 2002-10-18
JP2002-376767 2002-12-26
JP2002376767 2002-12-26
JP2003023709 2003-01-31
JP2003-023709 2003-01-31
PCT/JP2003/013329 WO2004035180A1 (en) 2002-10-18 2003-10-17 Microporous hydrophilic membrane

Publications (2)

Publication Number Publication Date
CA2502577A1 true CA2502577A1 (en) 2004-04-29
CA2502577C CA2502577C (en) 2008-11-04

Family

ID=32110647

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002502577A Expired - Lifetime CA2502577C (en) 2002-10-18 2003-10-17 Hydrophilic microporous membrane

Country Status (8)

Country Link
US (1) US7459085B2 (en)
EP (1) EP1552878A4 (en)
JP (1) JP4699207B2 (en)
KR (1) KR100668573B1 (en)
CN (1) CN1705505B (en)
AU (1) AU2003301399B2 (en)
CA (1) CA2502577C (en)
WO (1) WO2004035180A1 (en)

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Also Published As

Publication number Publication date
EP1552878A4 (en) 2006-03-22
KR20050056245A (en) 2005-06-14
CN1705505A (en) 2005-12-07
JP4699207B2 (en) 2011-06-08
US7459085B2 (en) 2008-12-02
US20060016748A1 (en) 2006-01-26
KR100668573B1 (en) 2007-01-16
WO2004035180A1 (en) 2004-04-29
AU2003301399A1 (en) 2004-05-04
CN1705505B (en) 2010-04-28
EP1552878A1 (en) 2005-07-13
CA2502577C (en) 2008-11-04
AU2003301399B2 (en) 2006-07-06
JPWO2004035180A1 (en) 2006-02-09

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