DE2634604C3 - Verfahren zur Herstellung einer Folie mit einer asymmetrischen Querschnittsstruktur nach dem Naßverfahren - Google Patents

Verfahren zur Herstellung einer Folie mit einer asymmetrischen Querschnittsstruktur nach dem Naßverfahren

Info

Publication number
DE2634604C3
DE2634604C3 DE2634604A DE2634604A DE2634604C3 DE 2634604 C3 DE2634604 C3 DE 2634604C3 DE 2634604 A DE2634604 A DE 2634604A DE 2634604 A DE2634604 A DE 2634604A DE 2634604 C3 DE2634604 C3 DE 2634604C3
Authority
DE
Germany
Prior art keywords
film
solution
coagulation
starting solution
specific gravity
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
DE2634604A
Other languages
German (de)
English (en)
Other versions
DE2634604B2 (de
DE2634604A1 (de
Inventor
Junichiro Chiba Maehara (Japan)
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.)
Idemitsu Kosan Co Ltd
Original Assignee
Idemitsu Kosan Co Ltd
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 Idemitsu Kosan Co Ltd filed Critical Idemitsu Kosan Co Ltd
Publication of DE2634604A1 publication Critical patent/DE2634604A1/de
Publication of DE2634604B2 publication Critical patent/DE2634604B2/de
Application granted granted Critical
Publication of DE2634604C3 publication Critical patent/DE2634604C3/de
Expired 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
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0016—Coagulation
    • B01D67/00165—Composition of the coagulation baths
    • 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
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • 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
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/022—Asymmetric membranes
    • B01D2325/0231—Dense layers being placed on the outer side of the cross-section

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
DE2634604A 1975-07-31 1976-07-31 Verfahren zur Herstellung einer Folie mit einer asymmetrischen Querschnittsstruktur nach dem Naßverfahren Expired DE2634604C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50092535A JPS5216572A (en) 1975-07-31 1975-07-31 Method of producing wet film

Publications (3)

Publication Number Publication Date
DE2634604A1 DE2634604A1 (de) 1977-02-03
DE2634604B2 DE2634604B2 (de) 1978-06-01
DE2634604C3 true DE2634604C3 (de) 1979-01-25

Family

ID=14057048

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2634604A Expired DE2634604C3 (de) 1975-07-31 1976-07-31 Verfahren zur Herstellung einer Folie mit einer asymmetrischen Querschnittsstruktur nach dem Naßverfahren

Country Status (5)

Country Link
JP (1) JPS5216572A (enExample)
DE (1) DE2634604C3 (enExample)
FR (1) FR2319663A1 (enExample)
GB (1) GB1502536A (enExample)
IT (1) IT1062644B (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2470371B1 (fr) * 1979-11-23 1985-09-13 Neotronics Ltd Appareil de mesure de l'efficacite d'installation de combustion
JPS58175226A (ja) * 1982-04-08 1983-10-14 株式会社安川電機 ガス封入形遮断器
DE3217047A1 (de) * 1982-05-06 1983-11-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Membranen auf der basis von kieselsaeureheteropolykondensaten, verfahren zu ihrer herstellung und ihre verwendung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5512054B2 (enExample) * 1972-09-22 1980-03-29

Also Published As

Publication number Publication date
FR2319663B1 (enExample) 1978-05-05
IT1062644B (it) 1984-10-20
JPS5216572A (en) 1977-02-07
DE2634604B2 (de) 1978-06-01
JPS561345B2 (enExample) 1981-01-13
DE2634604A1 (de) 1977-02-03
FR2319663A1 (fr) 1977-02-25
GB1502536A (en) 1978-03-01

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8339 Ceased/non-payment of the annual fee