ES8201432A1 - PROCEDURE FOR THE MANUFACTURE OF A MEMBRANE, ESPECIALLY FOR PLASMOFORESIS - Google Patents

PROCEDURE FOR THE MANUFACTURE OF A MEMBRANE, ESPECIALLY FOR PLASMOFORESIS

Info

Publication number
ES8201432A1
ES8201432A1 ES499623A ES499623A ES8201432A1 ES 8201432 A1 ES8201432 A1 ES 8201432A1 ES 499623 A ES499623 A ES 499623A ES 499623 A ES499623 A ES 499623A ES 8201432 A1 ES8201432 A1 ES 8201432A1
Authority
ES
Spain
Prior art keywords
precipitation bath
membrane
weight
jet
solution
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
ES499623A
Other languages
Spanish (es)
Other versions
ES499623A0 (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.)
Akzo NV
Original Assignee
Akzo NV
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 Akzo NV filed Critical Akzo NV
Publication of ES499623A0 publication Critical patent/ES499623A0/en
Publication of ES8201432A1 publication Critical patent/ES8201432A1/en
Expired 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
    • B01D69/04—Tubular membranes
    • 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
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
    • 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
    • B01D69/06—Flat 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
    • 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
    • B01D69/087—Details relating to the spinning process
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Artificial Filaments (AREA)
  • External Artificial Organs (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

A process for the production of a membrane which comprises forcing a spinning solution comprising from 8 to 25%, by weight, of one or more cellulose esters, from 55 to 92%, by weight, of one or more solvents and optionally up to 20%, by weight, of one or more other additives through a spinning jet immersed in a precipitation bath, exposing the jet of solution to the coagulating effect of the precipitation bath at the boundaries of the jet over a section of precipitation bath which is at least 30 cm long, guiding the coagulated material out of the precipitation bath, washing with water until free from solvent, impregnating with plasticiser solution and drying is disclosed. The present invention also relates to a membrane which comprises distinct, substantially parallelepipedic closed cells juxtaposed to form a honeycomb-like structure all the cell walls having a plurality of holes as pores.
ES499623A 1980-02-23 1981-02-20 PROCEDURE FOR THE MANUFACTURE OF A MEMBRANE, ESPECIALLY FOR PLASMOFORESIS Expired ES8201432A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3006880A DE3006880C2 (en) 1980-02-23 1980-02-23 Plasmaphoresis membrane

Publications (2)

Publication Number Publication Date
ES499623A0 ES499623A0 (en) 1981-12-16
ES8201432A1 true ES8201432A1 (en) 1981-12-16

Family

ID=6095424

Family Applications (2)

Application Number Title Priority Date Filing Date
ES499623A Expired ES8201432A1 (en) 1980-02-23 1981-02-20 PROCEDURE FOR THE MANUFACTURE OF A MEMBRANE, ESPECIALLY FOR PLASMOFORESIS
ES1981267109U Expired ES267109Y (en) 1980-02-23 1981-02-20 "A MEMBRANE ARRANGEMENT, ESPECIALLY FOR PLASMOFORESIS".

Family Applications After (1)

Application Number Title Priority Date Filing Date
ES1981267109U Expired ES267109Y (en) 1980-02-23 1981-02-20 "A MEMBRANE ARRANGEMENT, ESPECIALLY FOR PLASMOFORESIS".

Country Status (13)

Country Link
JP (1) JPS56134209A (en)
AT (1) AT381237B (en)
BE (1) BE887603A (en)
CA (1) CA1184716A (en)
CH (1) CH647419A5 (en)
DE (1) DE3006880C2 (en)
ES (2) ES8201432A1 (en)
FR (1) FR2476500B1 (en)
GB (1) GB2069925B (en)
IT (1) IT1170741B (en)
LU (1) LU83157A1 (en)
NL (1) NL8100701A (en)
SE (1) SE8101127L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3042110A1 (en) * 1980-11-07 1982-06-16 Akzo Gmbh, 5600 Wuppertal MICROPOROUS CELLULOSE MEMBRANE
SE8202743L (en) * 1982-04-30 1983-09-05 Gambro Dialysatoren Microporous hollow fibre membrane for plasmapheresis - by extruding soln. contg. polyether-polycarbonate block copolymer with centre liq. into gelling liq. which slowly forms solid hollow fibre.
JPS60806A (en) * 1983-06-17 1985-01-05 Teijin Ltd Manufacture of plasma albumin permeable hollow yarn membrane
JPS61106168A (en) * 1984-10-30 1986-05-24 帝人株式会社 Permselective hollow yarn membrane, its production and serum component separator using the same
JPS61293469A (en) * 1985-06-21 1986-12-24 帝人株式会社 Permselective hollow yarn membrane and serum component separator using the same
DE3842822A1 (en) * 1988-12-20 1990-07-05 Akzo Gmbh BIOCOMPATIBLE DIALYSIS MEMBRANE FROM A MIXED POLYSACCHARIDESTER
EP0570826A1 (en) * 1992-05-20 1993-11-24 Akzo Nobel N.V. Cellulose acetate membrane
EP0574699A2 (en) * 1992-05-20 1993-12-22 Akzo Nobel N.V. Cellulose acetate dialysis membrane

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3709774A (en) * 1970-05-13 1973-01-09 Gen Electric Preparation of asymmetric polymer membranes
US3724672A (en) * 1970-07-27 1973-04-03 R Leonard Asymmetric hollow fiber membranes and method of fabrication
US3876738A (en) * 1973-07-18 1975-04-08 Amf Inc Process for producing microporous films and products
JPS5193786A (en) * 1975-02-15 1976-08-17 Makurokagatano chukuseni
JPS5289574A (en) * 1976-01-23 1977-07-27 Daicel Chem Ind Ltd Production of hollow filament used for separation
JPS6028522B2 (en) * 1975-03-27 1985-07-05 ダイセル化学工業株式会社 Manufacturing method of hollow fiber for separation
JPS5255719A (en) * 1975-10-31 1977-05-07 Daicel Chem Ind Ltd Hollow fibers having selective gas permeability and production thereof
US4127625A (en) * 1975-03-27 1978-11-28 Daicel Ltd. Process for preparing hollow fiber having selective gas permeability
GB1566581A (en) * 1975-12-29 1980-05-08 Nippon Zeon Co Hollow fibres and methods of manufacturing such fibres
FR2410501A1 (en) * 1976-11-15 1979-06-29 Monsanto Co MULTI-COMPONENT MEMBRANES FOR GAS SEPARATIONS
JPS546916A (en) * 1977-06-20 1979-01-19 Asahi Chem Ind Co Ltd Hollow cellulose fibers and their production
JPS5411322A (en) * 1977-06-29 1979-01-27 Asahi Chem Ind Co Ltd Hollow cellulose fibers and their production

Also Published As

Publication number Publication date
JPS56134209A (en) 1981-10-20
DE3006880A1 (en) 1981-09-03
BE887603A (en) 1981-06-15
CA1184716A (en) 1985-04-02
ES499623A0 (en) 1981-12-16
GB2069925B (en) 1983-08-10
LU83157A1 (en) 1981-06-05
AT381237B (en) 1986-09-10
ES267109U (en) 1983-02-16
IT1170741B (en) 1987-06-03
JPH035847B2 (en) 1991-01-28
NL8100701A (en) 1981-09-16
SE8101127L (en) 1981-08-24
GB2069925A (en) 1981-09-03
DE3006880C2 (en) 1986-10-09
ATA82481A (en) 1986-02-15
IT8147856A0 (en) 1981-02-20
FR2476500B1 (en) 1988-11-25
ES267109Y (en) 1983-08-16
FR2476500A1 (en) 1981-08-28
CH647419A5 (en) 1985-01-31

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