WO2003015902A3 - High strength asymmetric cellulosic membrane - Google Patents

High strength asymmetric cellulosic membrane Download PDF

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Publication number
WO2003015902A3
WO2003015902A3 PCT/US2002/025367 US0225367W WO03015902A3 WO 2003015902 A3 WO2003015902 A3 WO 2003015902A3 US 0225367 W US0225367 W US 0225367W WO 03015902 A3 WO03015902 A3 WO 03015902A3
Authority
WO
WIPO (PCT)
Prior art keywords
high strength
cellulosic membrane
membranes
strength asymmetric
asymmetric cellulosic
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.)
Ceased
Application number
PCT/US2002/025367
Other languages
French (fr)
Other versions
WO2003015902A2 (en
Inventor
I-Fan Wang
Richard Mcdonogh
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.)
Pall Corp
Original Assignee
Pall Corp
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 Pall Corp filed Critical Pall Corp
Priority to AU2002329724A priority Critical patent/AU2002329724A1/en
Priority to CA002454856A priority patent/CA2454856A1/en
Priority to JP2003520850A priority patent/JP2004538143A/en
Priority to EP02765968A priority patent/EP1425085A2/en
Publication of WO2003015902A2 publication Critical patent/WO2003015902A2/en
Publication of WO2003015902A3 publication Critical patent/WO2003015902A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • B01D67/00931—Chemical modification by introduction of specific groups after membrane formation, e.g. by grafting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/147—Microfiltration
    • 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
    • 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
    • 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
    • B01D67/0018—Thermally induced processes [TIPS]
    • 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
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/14—Esters of organic acids
    • 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
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/14—Esters of organic acids
    • B01D71/16—Cellulose acetate
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K1/00—General methods for the preparation of peptides, i.e. processes for the organic chemical preparation of peptides or proteins of any length
    • C07K1/14—Extraction; Separation; Purification
    • C07K1/34—Extraction; Separation; Purification by filtration, ultrafiltration or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07K—PEPTIDES
    • C07K16/00—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies
    • C07K16/06—Immunoglobulins [IG], e.g. monoclonal or polyclonal antibodies from serum
    • C07K16/065—Purification, fragmentation
    • 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
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/30—Cross-linking
    • 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
    • B01D2325/20—Specific permeability or cut-off range

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Immunology (AREA)
  • Inorganic Chemistry (AREA)
  • Transplantation (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The present invention relates to ultra-thin high strength asymmetric microfiltration and ultrafiltration cellulosic membranes. The membranes are internally hydrophilic. A method of preparing such membranes and their use in separating proteins from biological liquids are also provided.
PCT/US2002/025367 2001-08-14 2002-08-08 High strength asymmetric cellulosic membrane Ceased WO2003015902A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU2002329724A AU2002329724A1 (en) 2001-08-14 2002-08-08 High strength asymmetric cellulosic membrane
CA002454856A CA2454856A1 (en) 2001-08-14 2002-08-08 High strength asymmetric cellulosic membrane
JP2003520850A JP2004538143A (en) 2001-08-14 2002-08-08 High strength asymmetric cellulosic membrane
EP02765968A EP1425085A2 (en) 2001-08-14 2002-08-08 High strength asymmetric cellulosic membrane

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/929,821 2001-08-14
US09/929,821 US20030038081A1 (en) 2001-08-14 2001-08-14 High strength asymmetric cellulosic membrane

Publications (2)

Publication Number Publication Date
WO2003015902A2 WO2003015902A2 (en) 2003-02-27
WO2003015902A3 true WO2003015902A3 (en) 2003-11-13

Family

ID=25458509

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/025367 Ceased WO2003015902A2 (en) 2001-08-14 2002-08-08 High strength asymmetric cellulosic membrane

Country Status (6)

Country Link
US (1) US20030038081A1 (en)
EP (1) EP1425085A2 (en)
JP (1) JP2004538143A (en)
AU (1) AU2002329724A1 (en)
CA (1) CA2454856A1 (en)
WO (1) WO2003015902A2 (en)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6045899A (en) * 1996-12-12 2000-04-04 Usf Filtration & Separations Group, Inc. Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters
DE10326741B4 (en) * 2003-06-13 2017-07-27 Sartorius Stedim Biotech Gmbh A process for producing a cellulose-based microporous membrane and a cellulose-based microporous membrane obtained by the process
JP2005095003A (en) * 2003-09-03 2005-04-14 Fuji Photo Film Co Ltd Method for separating and purifying nucleic acid
DE10354571B4 (en) * 2003-11-21 2011-05-05 Sartorius Stedim Biotech Gmbh Process for the production of spirits
JP2006083292A (en) * 2004-09-16 2006-03-30 Fuji Photo Film Co Ltd Method for stable production of microporous membrane and use thereof in nucleic acid separation and purification method
RU2008129719A (en) * 2005-12-21 2010-01-27 Конинклейке Филипс Электроникс Н.В. (Nl) SENSOR OF BIOMOLECULES AND METHOD OF ITS PRODUCTION AND APPLICATION
JP2007245107A (en) * 2006-03-20 2007-09-27 Daicel Chem Ind Ltd Hollow fiber porous membrane
US8123945B2 (en) * 2007-05-09 2012-02-28 The United States of America as represented by the Secretary of the Interior, The Bereau of Reclamation Method for making high flux, high salt rejection cellulose desalting membranes
EP2150356A4 (en) * 2007-05-26 2012-05-30 Stonybrook Water Purification HIGH FLOW FLUID SEPARATION MEMBRANES COMPRISING A CELLULOSE LAYER OR CELLULOSE DERIVATIVE
DE102008055821A1 (en) * 2008-04-14 2009-10-15 Sartorius Stedim Biotech Gmbh Cellulose hydrate membrane, process for its preparation and use thereof
DE102008018732B4 (en) 2008-04-14 2022-06-09 Sartorius Stedim Biotech Gmbh Process for separating substances using a cellulose hydrate membrane in size exclusion chromatography
DE102008018734B4 (en) * 2008-04-14 2013-03-21 Sartorius Stedim Biotech Gmbh Hydrophobic cellulose membrane, process for its preparation and its use in hydrophobic interaction chromatography
US9055752B2 (en) * 2008-11-06 2015-06-16 Intercontinental Great Brands Llc Shelf-stable concentrated dairy liquids and methods of forming thereof
UA112972C2 (en) 2010-09-08 2016-11-25 Інтерконтінентал Грейт Брендс ЛЛС LIQUID DAIRY CONCENTRATE WITH A HIGH CONTENT OF DRY SUBSTANCES
US8585806B2 (en) * 2011-01-11 2013-11-19 Hydration Systems, Llc Gas separation membrane
US20120175300A1 (en) * 2011-01-11 2012-07-12 Herron John R Two-layer membrane
CN106661263B (en) * 2014-07-22 2020-07-10 株式会社大赛璐 Manufacturing method of porous cellulose medium
JP6422032B2 (en) * 2015-11-04 2018-11-14 日本特殊膜開発株式会社 Flow separation type pore diffusion membrane separation module for concentration
TWI577562B (en) * 2016-02-05 2017-04-11 大江生醫股份有限公司 Bio-cellulose membrane and the production method thereof
KR102247345B1 (en) * 2019-07-12 2021-05-03 한국화학연구원 Hollow fiber membrane with improved mechanical strength, and method for manufacturing the same
DE102019005373A1 (en) 2019-07-30 2021-02-04 Sartorius Stedim Biotech Gmbh Mechanically stable ultrafiltration membrane and process for its manufacture
GB202009004D0 (en) 2020-06-12 2020-07-29 Norwegian Univ Of Science And Technology (Ntnu) Carbon hollow fibre membrane
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
CN113117532B (en) * 2021-05-06 2022-07-15 贝源新材料科技(广东)有限公司 Ultrafiltration membrane for double adsorption of heavy metal and dye and preparation method thereof
CN113171686A (en) * 2021-05-12 2021-07-27 安徽建筑大学 A kind of preparation method of cellulose acetate reverse osmosis membrane modified with quaternary ammonium salt surface
CN115025630A (en) * 2021-06-02 2022-09-09 赛普(杭州)过滤科技有限公司 Preparation method and product of hollow cellulose virus removal filtering membrane
CN115041024A (en) * 2021-06-02 2022-09-13 赛普(杭州)过滤科技有限公司 Preparation method of asymmetric regenerated cellulose virus-removing flat filter membrane and product
CN114653214A (en) * 2022-03-29 2022-06-24 赛普(杭州)过滤科技有限公司 Preparation method of regenerated cellulose ultrafiltration membrane with controllable product performance and product
CA3247043A1 (en) * 2022-04-15 2023-10-19 Siemens Healthcare Diagnostics Inc. Creatinine lateral flow assay devices and methods of production and use thereof
CN116099385B (en) * 2022-09-09 2024-06-14 杭州科百特过滤器材有限公司 A high-throughput cellulose virus removal filter membrane and its preparation process
CN116272430A (en) * 2023-02-28 2023-06-23 杭州科百特过滤器材有限公司 A kind of cellulose virus removal film and its preparation process
CN116272431A (en) * 2023-04-10 2023-06-23 赛普(杭州)过滤科技有限公司 Preparation method of ultrafiltration membrane with controllable thickness of humidity sensing small pore layer and ultrafiltration equipment
CN116712869B (en) * 2023-08-07 2023-11-24 赛普(杭州)过滤科技有限公司 Regenerated cellulose virus-removing filtering membrane and preparation method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883626A (en) * 1972-11-21 1975-05-13 Asahi Chemical Ind Porous cellulose acetate membrane and a process for the manufacture of same
EP0042766A2 (en) * 1980-06-25 1981-12-30 Puropore, Inc. Highly anisotropic membranes and process for making same
US4543221A (en) * 1979-12-17 1985-09-24 Cd Medical, Inc. Method for making cellulose semipermeable hollow fibers
JPS6230502A (en) * 1985-03-04 1987-02-09 Toyobo Co Ltd Hollow yarn type separation membrane
JPH04250834A (en) * 1991-01-07 1992-09-07 Fuji Photo Film Co Ltd Precision filter membrane
DE19750527A1 (en) * 1997-11-14 1999-05-27 Akzo Nobel Nv Production of stable and storable cellulosic separation membrane
WO2000072950A1 (en) * 1999-05-31 2000-12-07 Daicel Chemical Industries, Ltd. Cellulose derivative hollow fiber membrane
WO2001089673A2 (en) * 2000-05-24 2001-11-29 Millipore Corporation Process of forming multilayered structures

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1495887A (en) * 1923-09-24 1924-05-27 George W Crane Drill-setting device
US3227510A (en) * 1958-03-04 1966-01-04 Tee Pak Inc Dyeing substrates ionically binding in localized areas catalysts for the predyeing olefin polymerization thereon
US3580841A (en) * 1969-07-31 1971-05-25 Us Interior Ultrathin semipermeable membrane
BE759589A (en) * 1969-11-28 1971-04-30 Eastman Kodak Co PROCESS FOR THE MANUFACTURE OF MEMBRANES SPECIFIC TO REVERSE OSMOSIS
US3682318A (en) * 1970-06-10 1972-08-08 Amicon Corp Tubular ultrafiltration membrane and support
US3762566A (en) * 1971-08-03 1973-10-02 Abcor Inc Supported semipermeable membranes and process for preparing same
DE2522979A1 (en) * 1974-05-24 1975-12-04 Fuji Photo Film Co Ltd METHOD OF MANUFACTURING A MICROPOROUS FILM
US4026978A (en) * 1975-07-17 1977-05-31 The United States Of America As Represented By The Secretary Of The Interior Method of making asymmetric cellulose triacetate membranes
US4309247A (en) * 1976-03-15 1982-01-05 Amf Incorporated Filter and method of making same
US4159251A (en) * 1976-09-29 1979-06-26 Pharmaco, Inc. Ultrafiltration membranes based on heteroaromatic polymers
US4145295A (en) * 1977-08-15 1979-03-20 Canadian Patents And Development Limited Cellulose ester ultra-filtration membranes and their manufacture
CA1148872A (en) * 1979-04-06 1983-06-28 Eugene A. Ostreicher Filter with inorganic cationic colloidal silica
US4629563B1 (en) * 1980-03-14 1997-06-03 Memtec North America Asymmetric membranes
US4473474A (en) * 1980-10-27 1984-09-25 Amf Inc. Charge modified microporous membrane, process for charge modifying said membrane and process for filtration of fluid
US4432875A (en) * 1981-05-29 1984-02-21 Brunswick Corporation Semi-permeable membranes and processes for making the same
US4413074A (en) * 1982-01-25 1983-11-01 Brunswick Corporation Hydrophilic surfaces and process for making the same
CH660852A5 (en) * 1982-11-23 1987-05-29 Aligena Ag DYNAMIC MEMBRANES THAT ARE THIN THIN POLYMER LAYERS ON POROUS, POLYMER CARRIER MATERIALS.
US4512896A (en) * 1983-02-07 1985-04-23 Yale University Transfer of macromolecules from a chromatographic substrate to an immobilizing matrix
US4609465A (en) * 1984-05-21 1986-09-02 Pall Corporation Filter cartridge with a connector seal
US4606824A (en) * 1984-10-26 1986-08-19 Chaokang Chu Modified cellulose separation matrix
IL78169A0 (en) * 1986-03-17 1986-07-31 Weizmann Kiryat Membrane Prod Novel membranes and process for making them
US4814082A (en) * 1986-10-20 1989-03-21 Memtec North America Corporation Ultrafiltration thin film membranes
US4902422A (en) * 1988-12-06 1990-02-20 Board Regents The University Of Texas System Defect-free ultrahigh flux asymmetric membranes
NL9000113A (en) * 1990-01-17 1991-08-16 X Flow Bv METHOD FOR MANUFACTURING A FLAT POROUS PRODUCT AND ITS APPLICATION IN THE FIELD OF PHARMACY, MEDICINE, DENTISTRY OR COSMETICS.
US5098569A (en) * 1990-12-13 1992-03-24 Monsanto Company Surface-modified support membrane and process therefor
IL104670A (en) * 1993-02-09 1998-04-05 Travenol Lab Israel Ltd Leukocyte removal method and filter unit for same
DE4309845C2 (en) * 1993-03-26 1996-10-31 Seitz Filter Werke Filter material and process for its manufacture
US6045899A (en) * 1996-12-12 2000-04-04 Usf Filtration & Separations Group, Inc. Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883626A (en) * 1972-11-21 1975-05-13 Asahi Chemical Ind Porous cellulose acetate membrane and a process for the manufacture of same
US4543221A (en) * 1979-12-17 1985-09-24 Cd Medical, Inc. Method for making cellulose semipermeable hollow fibers
EP0042766A2 (en) * 1980-06-25 1981-12-30 Puropore, Inc. Highly anisotropic membranes and process for making same
JPS6230502A (en) * 1985-03-04 1987-02-09 Toyobo Co Ltd Hollow yarn type separation membrane
JPH04250834A (en) * 1991-01-07 1992-09-07 Fuji Photo Film Co Ltd Precision filter membrane
DE19750527A1 (en) * 1997-11-14 1999-05-27 Akzo Nobel Nv Production of stable and storable cellulosic separation membrane
WO2000072950A1 (en) * 1999-05-31 2000-12-07 Daicel Chemical Industries, Ltd. Cellulose derivative hollow fiber membrane
EP1127608A1 (en) * 1999-05-31 2001-08-29 Daicel Chemical Industries, Ltd. Cellulose derivative hollow fiber membrane
WO2001089673A2 (en) * 2000-05-24 2001-11-29 Millipore Corporation Process of forming multilayered structures

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 011, no. 206 (C - 433) 3 July 1987 (1987-07-03) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 030 (C - 1018) 20 January 1993 (1993-01-20) *

Also Published As

Publication number Publication date
CA2454856A1 (en) 2003-02-27
US20030038081A1 (en) 2003-02-27
JP2004538143A (en) 2004-12-24
AU2002329724A1 (en) 2003-03-03
WO2003015902A2 (en) 2003-02-27
EP1425085A2 (en) 2004-06-09

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