IE782266L - Microfiltration membranes - Google Patents

Microfiltration membranes

Info

Publication number
IE782266L
IE782266L IE782266A IE226678A IE782266L IE 782266 L IE782266 L IE 782266L IE 782266 A IE782266 A IE 782266A IE 226678 A IE226678 A IE 226678A IE 782266 L IE782266 L IE 782266L
Authority
IE
Ireland
Prior art keywords
membranes
cellulose acetate
microfiltration membranes
cellulose
cellulose nitrate
Prior art date
Application number
IE782266A
Other versions
IE47585B1 (en
Original Assignee
Nuclepore 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
Priority claimed from US05/953,377 external-priority patent/US4220477A/en
Application filed by Nuclepore Corp filed Critical Nuclepore Corp
Publication of IE782266L publication Critical patent/IE782266L/en
Publication of IE47585B1 publication Critical patent/IE47585B1/en

Links

Classifications

    • 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
    • B01D71/22—Cellulose ethers
    • 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
    • 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
    • B01D71/20—Esters of inorganic acids, e.g. cellulose nitrate
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Microfiltration membranes comprise 10% to 50% cyanoethylated polysaccharide ether polymers blended with 50% to 90% polymers of cellulose nitrate, cellulose acetate or mixtures of the two. These membranes are flexible and strong and can be readily pleated for use in cartridge filters as well as used flat in conventional single- or multi-plate holders. They are also more thermally stable than conventional "mixed ester" (cellulose nitrate/cellulose acetate) membranes. Membranes are formed by wet or dry phase inversion casting. [GB2009031A]
IE2266/78A 1977-11-18 1978-11-17 Flexible microporus cellulosic membranes and methods of formation and use thereof IE47585B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85277677A 1977-11-18 1977-11-18
US05/953,377 US4220477A (en) 1978-10-23 1978-10-23 Flexible microporous cellulosic membranes and methods of formation and use thereof

Publications (2)

Publication Number Publication Date
IE782266L true IE782266L (en) 1979-05-18
IE47585B1 IE47585B1 (en) 1984-05-02

Family

ID=27127086

Family Applications (1)

Application Number Title Priority Date Filing Date
IE2266/78A IE47585B1 (en) 1977-11-18 1978-11-17 Flexible microporus cellulosic membranes and methods of formation and use thereof

Country Status (8)

Country Link
JP (1) JPS5490082A (en)
BR (1) BR7807556A (en)
CA (1) CA1096556A (en)
DE (1) DE2849863C3 (en)
FR (1) FR2409077A1 (en)
GB (1) GB2009031B (en)
IE (1) IE47585B1 (en)
IT (1) IT7851950A0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19613484A1 (en) * 1996-04-04 1997-10-09 Buna Sow Leuna Olefinverb Gmbh Biodegradable gas separation membrane with high selectivity for carbon di:oxide permeation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE329117C (en) * 1916-08-21 1920-11-15 Richard Zsigmondy Dr Membrane filters and processes for their manufacture
DE1017596B (en) * 1956-07-04 1957-10-17 Membranfiltergesellschaft Sart Method and device for the continuous production of membrane filters
JPS5538366B2 (en) * 1974-03-13 1980-10-03
GB1430323A (en) * 1974-03-20 1976-03-31 Chem Systems Process for the preparation of asymmetric reverse osmosis membranes

Also Published As

Publication number Publication date
BR7807556A (en) 1979-07-24
JPS5490082A (en) 1979-07-17
FR2409077B1 (en) 1984-11-16
DE2849863B2 (en) 1981-03-12
GB2009031B (en) 1982-03-10
DE2849863C3 (en) 1982-06-24
DE2849863A1 (en) 1979-05-31
CA1096556A (en) 1981-03-03
IT7851950A0 (en) 1978-11-17
IE47585B1 (en) 1984-05-02
JPS5634132B2 (en) 1981-08-08
FR2409077A1 (en) 1979-06-15
GB2009031A (en) 1979-06-13

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