WO1999044729A1 - Reinforced microporous filtration membrane and process of making and using same - Google Patents

Reinforced microporous filtration membrane and process of making and using same Download PDF

Info

Publication number
WO1999044729A1
WO1999044729A1 PCT/US1999/004851 US9904851W WO9944729A1 WO 1999044729 A1 WO1999044729 A1 WO 1999044729A1 US 9904851 W US9904851 W US 9904851W WO 9944729 A1 WO9944729 A1 WO 9944729A1
Authority
WO
WIPO (PCT)
Prior art keywords
membrane
region
pore size
microporous
support material
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/US1999/004851
Other languages
English (en)
French (fr)
Inventor
Mark T. Meyering
Jack H. Vining
C. Thomas Badenhop
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.)
3M Purification Inc
Original Assignee
Cuno 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 Cuno Inc filed Critical Cuno Inc
Priority to BR9908383-3A priority Critical patent/BR9908383A/pt
Priority to EP99908646A priority patent/EP1060007B1/en
Priority to JP2000534321A priority patent/JP2002505181A/ja
Priority to AU28024/99A priority patent/AU747589B2/en
Priority to DE69909445T priority patent/DE69909445T2/de
Publication of WO1999044729A1 publication Critical patent/WO1999044729A1/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
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/106—Membranes in the pores of a support, e.g. polymerized in the pores or voids
    • 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
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/107—Organic support material
    • B01D69/1071—Woven, non-woven or net mesh

Definitions

  • the solvent system comprises a mixture of at least one solvent and one nonsolvent for the polymer.
  • the solvents which can be used with alcohol soluble nylons include lower alkanols, e.g. methanol, ethanol and butanol, and mixtures thereof. It is known that nonalcohol soluble nylons will dissolve in solvents of acids, for example, formic acid, citric acid, acetic acid, maleic acid, and similar acids.
  • the nylon casting solutions after formation are diluted with a nonsolvent for the nylon which is miscible with the nylon solution. Dilution with nonsolvent may be effected up to the point of incipient precipitation of the nylon.
  • the nonsolvents are selected on the basis of the nylon solvent utilized.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
PCT/US1999/004851 1998-03-05 1999-03-02 Reinforced microporous filtration membrane and process of making and using same Ceased WO1999044729A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR9908383-3A BR9908383A (pt) 1998-03-05 1999-03-02 Membrana de filtração microporosa geométricamente simétrica, contìnua e reforçada e método de fabricação e utilização da mesma
EP99908646A EP1060007B1 (en) 1998-03-05 1999-03-02 Reinforced microporous filtration membrane and process of making and using same
JP2000534321A JP2002505181A (ja) 1998-03-05 1999-03-02 補強された微孔性濾過膜とそれを造る工程及び使用方法
AU28024/99A AU747589B2 (en) 1998-03-05 1999-03-02 Reinforced microporous filtration membrane and process of making and using same
DE69909445T DE69909445T2 (de) 1998-03-05 1999-03-02 Verstärkte mikroporöse filtrationsmembran und verfahren zu ihrer herstellung und verwendung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US3538898A 1998-03-05 1998-03-05
US09/035,388 1998-03-05

Publications (1)

Publication Number Publication Date
WO1999044729A1 true WO1999044729A1 (en) 1999-09-10

Family

ID=21882374

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/004851 Ceased WO1999044729A1 (en) 1998-03-05 1999-03-02 Reinforced microporous filtration membrane and process of making and using same

Country Status (6)

Country Link
EP (1) EP1060007B1 (enExample)
JP (1) JP2002505181A (enExample)
AU (1) AU747589B2 (enExample)
BR (1) BR9908383A (enExample)
DE (1) DE69909445T2 (enExample)
WO (1) WO1999044729A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1359994A4 (en) * 2000-12-22 2005-06-15 Osmonics Inc FILTRATION CARTRIDGES WITH BACK-CURRENT

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060315A3 (en) 2007-11-15 2009-08-12 DSMIP Assets B.V. High performance membrane
US8820540B2 (en) 2011-01-28 2014-09-02 Woongjin Chemical Co., Ltd. Method for preparing a filtration membrane and filtration membrane prepared by said method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969548A (en) * 1973-01-15 1976-07-13 Universal Oil Products Company Method for forming a semi-permeable strip
US4707265A (en) * 1981-12-18 1987-11-17 Cuno Incorporated Reinforced microporous membrane
JPH04190836A (ja) * 1990-11-26 1992-07-09 Nitto Denko Corp 半透膜
EP0540549A1 (en) * 1990-07-18 1993-05-12 The Australian National University Formation of porous materials
WO1993023153A1 (en) * 1992-05-18 1993-11-25 Costar Corporation Supported microporous membranes
US5433859A (en) * 1993-07-12 1995-07-18 Pall Corporation Supported microporous filtration membrane and method of using same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969548A (en) * 1973-01-15 1976-07-13 Universal Oil Products Company Method for forming a semi-permeable strip
US4707265A (en) * 1981-12-18 1987-11-17 Cuno Incorporated Reinforced microporous membrane
EP0540549A1 (en) * 1990-07-18 1993-05-12 The Australian National University Formation of porous materials
JPH04190836A (ja) * 1990-11-26 1992-07-09 Nitto Denko Corp 半透膜
WO1993023153A1 (en) * 1992-05-18 1993-11-25 Costar Corporation Supported microporous membranes
US5433859A (en) * 1993-07-12 1995-07-18 Pall Corporation Supported microporous filtration membrane and method of using same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 9234, Derwent World Patents Index; Class A88, AN 92-280147 *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 512 (C - 0998) 22 October 1992 (1992-10-22) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1359994A4 (en) * 2000-12-22 2005-06-15 Osmonics Inc FILTRATION CARTRIDGES WITH BACK-CURRENT

Also Published As

Publication number Publication date
DE69909445T2 (de) 2004-04-15
EP1060007A1 (en) 2000-12-20
AU2802499A (en) 1999-09-20
EP1060007B1 (en) 2003-07-09
AU747589B2 (en) 2002-05-16
BR9908383A (pt) 2000-10-10
DE69909445D1 (de) 2003-08-14
JP2002505181A (ja) 2002-02-19

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