IL38500A - Neutral membranes - Google Patents

Neutral membranes

Info

Publication number
IL38500A
IL38500A IL38500A IL3850072A IL38500A IL 38500 A IL38500 A IL 38500A IL 38500 A IL38500 A IL 38500A IL 3850072 A IL3850072 A IL 3850072A IL 38500 A IL38500 A IL 38500A
Authority
IL
Israel
Prior art keywords
resin
selective
matrix
membranes
embedded
Prior art date
Application number
IL38500A
Other versions
IL38500A0 (en
Original Assignee
State Of Il Prime Ministers Of
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 State Of Il Prime Ministers Of filed Critical State Of Il Prime Ministers Of
Priority to IL38500A priority Critical patent/IL38500A/en
Publication of IL38500A0 publication Critical patent/IL38500A0/en
Priority to FR7246831A priority patent/FR2166382B1/fr
Priority to GB5998872A priority patent/GB1423663A/en
Priority to NL7300081A priority patent/NL7300081A/xx
Publication of IL38500A publication Critical patent/IL38500A/en

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
    • B01D69/14—Dynamic membranes
    • B01D69/141—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
    • B01D69/1411—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes containing dispersed material in a continuous matrix
    • 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
    • B01D69/14—Dynamic membranes
    • B01D69/141—Heterogeneous membranes, e.g. containing dispersed material; Mixed matrix membranes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/20—Manufacture of shaped structures of ion-exchange resins
    • C08J5/22—Films, membranes or diaphragms
    • C08J5/2206—Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
    • C08J5/2275—Heterogeneous membranes
    • 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
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124—Water desalination

Abstract

1423663 Semi-permeable membrane ISRAEL STATE OF 29 Dec 1972 [3 Jan 1972] 59988/72 Heading B1X [Also in Divisions B4 and B5] An ion-selective membrane comprises a matrix of an electrically charged polymeric substance and embedded therein grains of an ion-exchange resin of opposite charge or of a polymeric substance characterised by a high degree of swelling. In examples the matrix is sulphochlorinated polyethylene, aminated and quaternised, containing particles of cationic (130 parts) and anionic (35 parts) resins; or a sulphochlorinated polyethylene subsequently hydrolysed to give a cationic matrix, containing particles of an anionic resin; or a sulphochlorinated polyethylene containing particles of a different sulphochlorinated polyethylene, the whole either aminated and quaternised, or hydrolysed: or a sulphochlorinated polyethylene containing particles of polyvinyl alcohol, the whole either aminated and quaternised, or hydrolysed. The membranes are used for desalination of water.

Claims (9)

WHAT IS CLAIMED IS:
1. Membranes comprising a matrix of a permselective polymeric substance and embedded therein grains of an ion exchange resin of opposite charge.
2. Membranes as claimed in Claim 1, wherein the matrix -' is anion-selective and the embedded resin is cation- selective.
3. Membranes as claimed in Claim 1, wherein the matrix is c tion-selective and the embedded resin is anion-selective.
4. Membranes as claimed in Claim 1, wherein the matrix is anion-selective and the embedded resin is a mixture of a larger part of cation-selective resin and a minor part of anion-selective resin.
5. Membranes as claimed in Claim 1, wherein the matrix is cation-selective, and the embedded reimn is a mixture I of a larger part of anion-selective resin and a minor part of cation-selective resin.
6. A membrane as claimed in any of Claims 1 to 5, wherein the matrix is an aminated sulfochlorinated polyethylene membrane, and the embedded resi £ft a cation exchange resin.
7. A membrane as claimed in any of Claims 1 to 5, wherein the matrix is a hydrolyzed sul ochlorinated polyethylene, and the embedded resin is an anion exchange resin.
8. Electrodialysis membranes, substantially as herein before described and with reference to any of the examples.
9. *' A method of nkmcx y ffg electrodialysis membranes, an which comprises preparing a slurry of a~BOi.~fca*bl¾ ion-exchange resin in grain form, admixing this with a solution of a" sui-bwble ion-exchange polymer of opposite functional groups and preparing a film of suitable thickness from this
IL38500A 1972-01-03 1972-01-03 Neutral membranes IL38500A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
IL38500A IL38500A (en) 1972-01-03 1972-01-03 Neutral membranes
FR7246831A FR2166382B1 (en) 1972-01-03 1972-12-29
GB5998872A GB1423663A (en) 1972-01-03 1972-12-29 Ion selective membranes
NL7300081A NL7300081A (en) 1972-01-03 1973-01-03

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IL38500A IL38500A (en) 1972-01-03 1972-01-03 Neutral membranes

Publications (2)

Publication Number Publication Date
IL38500A0 IL38500A0 (en) 1972-03-28
IL38500A true IL38500A (en) 1976-03-31

Family

ID=11046279

Family Applications (1)

Application Number Title Priority Date Filing Date
IL38500A IL38500A (en) 1972-01-03 1972-01-03 Neutral membranes

Country Status (4)

Country Link
FR (1) FR2166382B1 (en)
GB (1) GB1423663A (en)
IL (1) IL38500A (en)
NL (1) NL7300081A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116889A (en) * 1976-08-19 1978-09-26 Allied Chemical Corporation Bipolar membranes and method of making same
US4110164A (en) * 1977-04-19 1978-08-29 Standard Brands Incorporated Agglomerated fibrous cellulose
IL84348A (en) * 1987-11-02 1991-08-16 Weizmann Kiryat Membrane Prod Ion-transport selective membranes
US5024765A (en) * 1989-10-02 1991-06-18 Aligena Ag Composite membranes and processes using them
GB2250469B (en) * 1990-12-03 1995-03-22 Aligena Ag Charged asymmetric mosaic membranes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH305105A (en) * 1949-07-09 1955-02-15 Ionics Product selectively permeable to ions and method of manufacturing this product.
GB980185A (en) * 1960-08-26 1965-01-13 American Cyanamid Co Ion-exchange compositions

Also Published As

Publication number Publication date
FR2166382A1 (en) 1973-08-17
NL7300081A (en) 1973-07-05
FR2166382B1 (en) 1978-05-26
IL38500A0 (en) 1972-03-28
GB1423663A (en) 1976-02-04

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