GB2006643A - Membrane separation and purification of compounds - Google Patents

Membrane separation and purification of compounds

Info

Publication number
GB2006643A
GB2006643A GB7840969A GB7840969A GB2006643A GB 2006643 A GB2006643 A GB 2006643A GB 7840969 A GB7840969 A GB 7840969A GB 7840969 A GB7840969 A GB 7840969A GB 2006643 A GB2006643 A GB 2006643A
Authority
GB
United Kingdom
Prior art keywords
layer
membranes
alveolae
molecular weight
weight cut
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
GB7840969A
Other versions
GB2006643B (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.)
Unisearch Ltd
Original Assignee
Unisearch 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 Unisearch Ltd filed Critical Unisearch Ltd
Publication of GB2006643A publication Critical patent/GB2006643A/en
Application granted granted Critical
Publication of GB2006643B publication Critical patent/GB2006643B/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
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1216—Three or more layers
    • 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
    • B01D69/12—Composite membranes; Ultra-thin 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
    • 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
    • B01D67/0083—Thermal after-treatment
    • 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
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/56—Polyamides, e.g. polyester-amides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • 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
    • B01D2325/14—Membrane materials having negatively charged functional groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/16—Membrane materials having positively charged functional groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/20—Specific permeability or cut-off range

Landscapes

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

Abstract

A permeable anisotropic synthetic membrane useful in membrane separation processes, for example ultrafiltration, dialysis, electrodialysis, reverse osmosis, gas permeation and gas diffusion, comprises a multi-layered structure with each layer serving as a molecular screen having a precise molecular weight cut-off and wherein between each layer there are rows of alveolae with adjacent alveolae in adjacent rows being connected by means of channels of molecular dimensions. For any type of polymeric starting material it is possible to obtain membranes of a predetermined molecular weight cut- off. The membranes provide a multi- layered action which enables any defect in separation by one layer being corrected by the following layer and so requires a less strict quality control, reducing the cost of manufacture when compared with membranes of the prior art.
GB7840969A 1977-10-21 1978-10-18 Membrane separation and purification of compounds Expired GB2006643B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPD215577 1977-10-21
AUPD413478 1978-04-20

Publications (2)

Publication Number Publication Date
GB2006643A true GB2006643A (en) 1979-05-10
GB2006643B GB2006643B (en) 1982-08-04

Family

ID=25642186

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7840969A Expired GB2006643B (en) 1977-10-21 1978-10-18 Membrane separation and purification of compounds

Country Status (9)

Country Link
JP (1) JPS5477289A (en)
BR (1) BR7806967A (en)
CH (1) CH633453A5 (en)
DE (1) DE2845797A1 (en)
DK (1) DK156813C (en)
GB (1) GB2006643B (en)
MY (1) MY8400317A (en)
NZ (1) NZ188666A (en)
SG (1) SG45283G (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5700844A (en) * 1996-04-09 1997-12-23 International Business Machines Corporation Process for making a foamed polymer
US5883219A (en) * 1997-05-29 1999-03-16 International Business Machines Corporation Integrated circuit device and process for its manufacture
US5895263A (en) * 1996-12-19 1999-04-20 International Business Machines Corporation Process for manufacture of integrated circuit device
US6093636A (en) * 1998-07-08 2000-07-25 International Business Machines Corporation Process for manufacture of integrated circuit device using a matrix comprising porous high temperature thermosets
US6333141B1 (en) 1998-07-08 2001-12-25 International Business Machines Corporation Process for manufacture of integrated circuit device using inorganic/organic matrix comprising polymers of three dimensional architecture
US6399666B1 (en) 1999-01-27 2002-06-04 International Business Machines Corporation Insulative matrix material

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3028213C2 (en) * 1980-07-25 1990-12-06 Akzo Gmbh, 5600 Wuppertal Process for the production of an ultrafiltration membrane made of polyamide and a membrane produced therefrom
JPS6028826A (en) * 1983-07-26 1985-02-14 Hiroshi Suzuki Compound film having surface layer of thin film of cage zeolite and preparation thereof
DE3674336D1 (en) * 1985-05-16 1990-10-25 Memtec Ltd ELIMINATION AND RECOVERY OF VEGETABLE POLYPHENOLS.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE33526C (en) * N. BLUM in Paris Thread cutting machine
US3709774A (en) * 1970-05-13 1973-01-09 Gen Electric Preparation of asymmetric polymer membranes
JPS523343B2 (en) * 1972-04-28 1977-01-27
FR2227942A1 (en) * 1973-05-02 1974-11-29 Gen Electric Ultra-thin polymer film made by flotation - of polymer soln. on liquid surface followed by desolvating
JPS5193786A (en) * 1975-02-15 1976-08-17 Makurokagatano chukuseni
DE2615954C3 (en) * 1975-04-22 1981-04-23 Kuraray Co., Ltd., Kurashiki, Okayama Polyvinyl alcohol based membrane
JPS5226380A (en) * 1975-08-25 1977-02-26 Sumitomo Chem Co Ltd Method of making semipermeable membranes
JPS6029282B2 (en) * 1976-09-03 1985-07-10 旭化成株式会社 Semipermeable membrane and its manufacturing method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5700844A (en) * 1996-04-09 1997-12-23 International Business Machines Corporation Process for making a foamed polymer
US5895263A (en) * 1996-12-19 1999-04-20 International Business Machines Corporation Process for manufacture of integrated circuit device
US5883219A (en) * 1997-05-29 1999-03-16 International Business Machines Corporation Integrated circuit device and process for its manufacture
US6093636A (en) * 1998-07-08 2000-07-25 International Business Machines Corporation Process for manufacture of integrated circuit device using a matrix comprising porous high temperature thermosets
US6333141B1 (en) 1998-07-08 2001-12-25 International Business Machines Corporation Process for manufacture of integrated circuit device using inorganic/organic matrix comprising polymers of three dimensional architecture
US6399666B1 (en) 1999-01-27 2002-06-04 International Business Machines Corporation Insulative matrix material

Also Published As

Publication number Publication date
GB2006643B (en) 1982-08-04
DE2845797A1 (en) 1979-05-03
DK156813B (en) 1989-10-09
JPS5630042B2 (en) 1981-07-13
DK156813C (en) 1990-03-05
BR7806967A (en) 1979-05-08
DE2845797C2 (en) 1988-12-29
JPS5477289A (en) 1979-06-20
CH633453A5 (en) 1982-12-15
SG45283G (en) 1984-02-17
MY8400317A (en) 1984-12-31
NZ188666A (en) 1980-12-19
DK463478A (en) 1979-04-22

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 19981017