FR2363350A1 - SEMI-PERMEABLE MEMBRANES AND PROCESS FOR THE PREPARATION OF THE SAME - Google Patents

SEMI-PERMEABLE MEMBRANES AND PROCESS FOR THE PREPARATION OF THE SAME

Info

Publication number
FR2363350A1
FR2363350A1 FR7726492A FR7726492A FR2363350A1 FR 2363350 A1 FR2363350 A1 FR 2363350A1 FR 7726492 A FR7726492 A FR 7726492A FR 7726492 A FR7726492 A FR 7726492A FR 2363350 A1 FR2363350 A1 FR 2363350A1
Authority
FR
France
Prior art keywords
type layer
membrane
porous gradient
semi
preparation
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.)
Granted
Application number
FR7726492A
Other languages
French (fr)
Other versions
FR2363350B1 (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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
Asahi Kasei Kogyo KK
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 Asahi Chemical Industry Co Ltd, Asahi Kasei Kogyo KK filed Critical Asahi Chemical Industry Co Ltd
Publication of FR2363350A1 publication Critical patent/FR2363350A1/en
Application granted granted Critical
Publication of FR2363350B1 publication Critical patent/FR2363350B1/fr
Granted 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
    • B01D69/02—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
    • 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
    • B01D67/0011—Casting solutions therefor
    • 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
    • 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
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/003—Organic membrane manufacture by inducing porosity into non porous precursor membranes by selective elimination of components, e.g. by leaching
    • 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
    • B01D69/04—Tubular membranes
    • 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
    • B01D69/08—Hollow fibre membranes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

La présente invention concerne des membranes semi-perméables et un procédé de préparation de celles-ci. Cette membrane servi-perméable possède sur soit l'une, soit les deux surfaces de la membrane, une couche poreuse de type à gradient dans laquelle la taille moyenne des pores contenus dans la couche devient plus faible à mesure que les pores s'approchent de la ou les surfaces de la membrane; la membrane possède sur la ou les surfaces de la couche poreuse de type à gradient, un grand nombre de parties concaves 5, 6 ayant une taille plus grande que celle des pores de la surface la plus extérieure de ladite couche poreuse de type à gradient et une profondeur ou hauteur plus faible que l'épaisseur de ladite couche poreuse de type à gradient, la taille moyenne des pores sur la surface intérieure desdites parties concaves étant plus grande que celle de la surface la plus extérieure de ladite couche poreuse de type à gradient Ces membranes ont une meilleure perméabilité à l'eau.The present invention relates to semi-permeable membranes and a process for their preparation. This served-permeable membrane has on either one or both surfaces of the membrane a porous gradient-type layer in which the average pore size in the layer becomes smaller as the pores approach size. the surface or surfaces of the membrane; the membrane has on the surface (s) of the porous gradient-type layer a large number of concave portions 5, 6 having a size larger than that of the pores of the outermost surface of said porous gradient-type layer and a depth or height less than the thickness of said porous gradient-type layer, the average pore size on the inner surface of said concave portions being greater than that of the outermost surface of said porous gradient-type layer These membranes have better water permeability.

FR7726492A 1976-09-03 1977-08-31 SEMI-PERMEABLE MEMBRANES AND PROCESS FOR THE PREPARATION OF THE SAME Granted FR2363350A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51105638A JPS6029282B2 (en) 1976-09-03 1976-09-03 Semipermeable membrane and its manufacturing method

Publications (2)

Publication Number Publication Date
FR2363350A1 true FR2363350A1 (en) 1978-03-31
FR2363350B1 FR2363350B1 (en) 1980-02-08

Family

ID=14412987

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7726492A Granted FR2363350A1 (en) 1976-09-03 1977-08-31 SEMI-PERMEABLE MEMBRANES AND PROCESS FOR THE PREPARATION OF THE SAME

Country Status (6)

Country Link
JP (1) JPS6029282B2 (en)
DE (1) DE2739118C3 (en)
FR (1) FR2363350A1 (en)
GB (1) GB1565113A (en)
IE (1) IE45467B1 (en)
IT (1) IT1085160B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS546916A (en) * 1977-06-20 1979-01-19 Asahi Chem Ind Co Ltd Hollow cellulose fibers and their production
NZ188666A (en) * 1977-10-21 1980-12-19 Unisearch Ltd Anisotropic synthetic membrane
JPS5596162A (en) * 1979-01-18 1980-07-22 Asahi Medical Co Polycarbonate hollow fiber dialysis film and its preparation
JPS5735905A (en) * 1980-08-13 1982-02-26 Asahi Chem Ind Co Ltd Membrane for dialysis and production for the same
JPS5891822A (en) * 1981-11-27 1983-05-31 Kuraray Co Ltd Polysulfone hollow fiber membrane, its production and filtration therewith
JPH0517664Y2 (en) * 1984-11-09 1993-05-12
JPS61118665A (en) * 1984-11-14 1986-06-05 Kawasaki Heavy Ind Ltd Apparatus for detecting flow of sand and the like
US4808315A (en) * 1986-04-28 1989-02-28 Asahi Kasei Kogyo Kabushiki Kaisha Porous hollow fiber membrane and a method for the removal of a virus by using the same
US5679042A (en) * 1996-04-25 1997-10-21 Kimberly-Clark Worldwide, Inc. Nonwoven fabric having a pore size gradient and method of making same
JP4689790B2 (en) * 2000-05-02 2011-05-25 ポール・コーポレーション Internal hydrophilic membrane of anionic copolymer blend
JP2005525926A (en) * 2002-05-17 2005-09-02 ミリポア・コーポレイション High throughput asymmetric membrane
US20140339165A1 (en) * 2013-05-14 2014-11-20 Pall Corporation High throughput membrane with rough surface

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR621181A (en) * 1925-09-17 1927-05-06 Erste Bohmische Kunstseidefabr Manufacturing process of artificial hollow textile fibers
FR2138333A1 (en) * 1971-05-24 1973-01-05 Rhone Poulenc Sa
US3864418A (en) * 1973-03-12 1975-02-04 Standard Oil Co Process of separating complexable materials employing semipermeable polymer film

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1132594A (en) * 1964-08-13 1968-11-06 Porous Plastics Ltd Improvements relating to artificial leather
US3423491A (en) * 1964-09-02 1969-01-21 Dow Chemical Co Permselective hollow fibers and method of making
GB1267167A (en) * 1968-09-30 1972-03-15
US3709774A (en) * 1970-05-13 1973-01-09 Gen Electric Preparation of asymmetric polymer membranes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR621181A (en) * 1925-09-17 1927-05-06 Erste Bohmische Kunstseidefabr Manufacturing process of artificial hollow textile fibers
FR33612E (en) * 1925-09-17 1928-11-29 Erste Bohmische Kunstseidefabr Manufacturing process of artificial hollow textile fibers
FR2138333A1 (en) * 1971-05-24 1973-01-05 Rhone Poulenc Sa
US3864418A (en) * 1973-03-12 1975-02-04 Standard Oil Co Process of separating complexable materials employing semipermeable polymer film

Also Published As

Publication number Publication date
GB1565113A (en) 1980-04-16
IT1085160B (en) 1985-05-28
DE2739118A1 (en) 1978-03-09
JPS6029282B2 (en) 1985-07-10
FR2363350B1 (en) 1980-02-08
DE2739118B2 (en) 1980-04-24
IE45467B1 (en) 1982-09-08
JPS5330989A (en) 1978-03-23
DE2739118C3 (en) 1984-09-20
IE45467L (en) 1978-03-03

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