GB2009031B - Flexible microporous cellulosic membranes and methods of formation and use thereof - Google Patents

Flexible microporous cellulosic membranes and methods of formation and use thereof

Info

Publication number
GB2009031B
GB2009031B GB7843859A GB7843859A GB2009031B GB 2009031 B GB2009031 B GB 2009031B GB 7843859 A GB7843859 A GB 7843859A GB 7843859 A GB7843859 A GB 7843859A GB 2009031 B GB2009031 B GB 2009031B
Authority
GB
United Kingdom
Prior art keywords
formation
methods
cellulosic membranes
flexible microporous
microporous 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.)
Expired
Application number
GB7843859A
Other versions
GB2009031A (en
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.)
Johns Manville Corp
Johns Manville
Original Assignee
Johns Manville Corp
Johns Manville
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 Johns Manville Corp, Johns Manville filed Critical Johns Manville Corp
Publication of GB2009031A publication Critical patent/GB2009031A/en
Application granted granted Critical
Publication of GB2009031B publication Critical patent/GB2009031B/en
Expired legal-status Critical Current

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)
GB7843859A 1977-11-18 1978-11-09 Flexible microporous cellulosic membranes and methods of formation and use thereof Expired GB2009031B (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
GB2009031A GB2009031A (en) 1979-06-13
GB2009031B true GB2009031B (en) 1982-03-10

Family

ID=27127086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7843859A Expired GB2009031B (en) 1977-11-18 1978-11-09 Flexible microporous 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
DE2849863C3 (en) 1982-06-24
IE47585B1 (en) 1984-05-02
DE2849863B2 (en) 1981-03-12
GB2009031A (en) 1979-06-13
FR2409077B1 (en) 1984-11-16
CA1096556A (en) 1981-03-03
DE2849863A1 (en) 1979-05-31
BR7807556A (en) 1979-07-24
JPS5490082A (en) 1979-07-17
JPS5634132B2 (en) 1981-08-08
IT7851950A0 (en) 1978-11-17
FR2409077A1 (en) 1979-06-15
IE782266L (en) 1979-05-18

Similar Documents

Publication Publication Date Title
JPS5416382A (en) Manufacture of micrporous membrane
JPS5420970A (en) Manufacture of micrporous membrane
JPS5416383A (en) Method of continuously forming porous* microporous and symmetrical membrane and membrane formed thereby
AU526984B2 (en) Venting fater and methods of securing membrane
JPS5471A (en) Improved manufacture of twoooriented hollow body and twoooriented hollow body
GB2037122B (en) Speaker diaphragm and method of preparation of the same
JPS5313595A (en) Blood dialyzing membrane and method of producing same
JPS5454191A (en) Semipermeable membrane of acrylonitrile copolymer
ZA783401B (en) Methods for preparation and use of aluminas having controlled porosity
JPS54133567A (en) Formation of microporous membrane material
GB2023375A (en) Loudspeakers and methods of making loudspeakers
ZA783971B (en) Mass-transfer membrane and processes using same
IL56015A (en) Gas separation membranes and their preparation
IL62812A0 (en) Copolymers of polyfluoroallyloxy compounds and membranes formed therefrom
JPS531179A (en) Membrane having selective fine hole tissue
JPS5295790A (en) Preparation of homoo and coopolymer of alphaamonoolefin
GB1545540A (en) Preparation of selectively permeable membranes
JPS5398421A (en) Hollow fiber membrane and method of using same
JPS54146279A (en) Ultraafiltration membrane and its manufacture
JPS52107086A (en) Preparation of modified polymer and use thereof
JPS52133978A (en) Preparation of 22aryllbenzoxazole or 22arylbenzthiazole
JPS5313690A (en) Preparation of homoo or coopolymer of alphaamonoolefin
GB2006643B (en) Membrane separation and purification of compounds
AU516289B2 (en) Nonwoven fabric and semipermeable membrane
GB2008894B (en) Microphone support and use thereof

Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee