JPS52130491A - Improvement of current efficiency of cation exchange membranes - Google Patents

Improvement of current efficiency of cation exchange membranes

Info

Publication number
JPS52130491A
JPS52130491A JP4723376A JP4723376A JPS52130491A JP S52130491 A JPS52130491 A JP S52130491A JP 4723376 A JP4723376 A JP 4723376A JP 4723376 A JP4723376 A JP 4723376A JP S52130491 A JPS52130491 A JP S52130491A
Authority
JP
Japan
Prior art keywords
cation exchange
current efficiency
exchange membranes
improvement
membranes
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
JP4723376A
Other languages
Japanese (ja)
Other versions
JPS6145653B2 (en
Inventor
Shunichi Asaumi
Toru Kiyota
Akihiko Shimizu
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.)
Tosoh Corp
Original Assignee
Toyo Soda Manufacturing 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 Toyo Soda Manufacturing Co Ltd filed Critical Toyo Soda Manufacturing Co Ltd
Priority to JP4723376A priority Critical patent/JPS52130491A/en
Priority to CA276,815A priority patent/CA1091406A/en
Priority to DE19772718307 priority patent/DE2718307B2/en
Priority to US05/790,818 priority patent/US4148979A/en
Priority to FR7712538A priority patent/FR2361435A1/en
Priority to GB1764477A priority patent/GB1547534A/en
Priority to IT2285877A priority patent/IT1075838B/en
Publication of JPS52130491A publication Critical patent/JPS52130491A/en
Publication of JPS6145653B2 publication Critical patent/JPS6145653B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • C08J5/2287—After-treatment
    • C08J5/2293—After-treatment of fluorine-containing 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
    • C08J5/2218—Synthetic macromolecular compounds
    • C08J5/2231—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds
    • C08J5/2237—Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds containing fluorine
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
    • C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
    • 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
    • C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/18—Homopolymers or copolymers of tetrafluoroethylene

Abstract

PURPOSE: To improve current efficiency in electrolytic separation in an OH--containing aq. solution by use of homhgeneous cation exchange membranes, by subjecting the membranes to swelling treatment with a water-miscible organic solvent to reduce their OH- permeability.
COPYRIGHT: (C)1977,JPO&Japio
JP4723376A 1976-04-27 1976-04-27 Improvement of current efficiency of cation exchange membranes Granted JPS52130491A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP4723376A JPS52130491A (en) 1976-04-27 1976-04-27 Improvement of current efficiency of cation exchange membranes
CA276,815A CA1091406A (en) 1976-04-27 1977-04-22 Method of improving current efficiency of cation- exchange membrane
DE19772718307 DE2718307B2 (en) 1976-04-27 1977-04-25 Process for improving the properties of a cation exchange membrane - US Pat
US05/790,818 US4148979A (en) 1976-04-27 1977-04-25 Method of improving characteristics of cation-exchange membrane by swelling in water miscible organic solvent
FR7712538A FR2361435A1 (en) 1976-04-27 1977-04-26 PROCESS FOR IMPROVING THE CHARACTERISTICS OF A CATION EXCHANGER MEMBRANE
GB1764477A GB1547534A (en) 1976-04-27 1977-04-27 Method of characteristic of cation-exchange membrane
IT2285877A IT1075838B (en) 1976-04-27 1977-04-27 METHOD TO IMPROVE THE CHARACTERISTIC OF A CATION EXCHANGE MEMBRANE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4723376A JPS52130491A (en) 1976-04-27 1976-04-27 Improvement of current efficiency of cation exchange membranes

Publications (2)

Publication Number Publication Date
JPS52130491A true JPS52130491A (en) 1977-11-01
JPS6145653B2 JPS6145653B2 (en) 1986-10-09

Family

ID=12769484

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4723376A Granted JPS52130491A (en) 1976-04-27 1976-04-27 Improvement of current efficiency of cation exchange membranes

Country Status (6)

Country Link
JP (1) JPS52130491A (en)
CA (1) CA1091406A (en)
DE (1) DE2718307B2 (en)
FR (1) FR2361435A1 (en)
GB (1) GB1547534A (en)
IT (1) IT1075838B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54137482A (en) * 1978-04-18 1979-10-25 Asahi Chem Ind Co Ltd Regeneration of flouric cation-exchange membrane
JP2002249522A (en) * 2001-02-23 2002-09-06 Nippon Mektron Ltd Carboxy group-containing fluorocopolymer

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE453603B (en) * 1977-11-02 1988-02-15 Asahi Glass Co Ltd PROCEDURE FOR RECOVERY OF ELECTROCHEMICAL PROPERTIES FOR CATION REPLACEMENT MEMBRANE MATERIAL
GB2014590B (en) * 1978-02-08 1982-06-16 Toyo Soda Mfg Co Ltd Process for producing cation exchange membrane
US4360412A (en) * 1980-11-17 1982-11-23 Ppg Industries, Inc. Treatment of permionic membrane
AU557081B2 (en) * 1982-06-08 1986-12-04 Imperial Chemical Industries Plc Treatment of ion-exchange membrane
GB2121827B (en) * 1982-06-08 1985-10-16 Ici Plc Swelling ion-exchange membrane
DE3473476D1 (en) * 1983-11-29 1988-09-22 Ici Plc Production of ion-exchange membrane
EP0145426A3 (en) * 1983-12-06 1986-07-30 E.I. Du Pont De Nemours And Company Process for making oriented film of fluorinated polymer
JPH02114244U (en) * 1989-03-01 1990-09-12
US5879828A (en) * 1997-10-10 1999-03-09 Minnesota Mining And Manufacturing Company Membrane electrode assembly
US6136412A (en) * 1997-10-10 2000-10-24 3M Innovative Properties Company Microtextured catalyst transfer substrate
US5879827A (en) * 1997-10-10 1999-03-09 Minnesota Mining And Manufacturing Company Catalyst for membrane electrode assembly and method of making
US6042959A (en) * 1997-10-10 2000-03-28 3M Innovative Properties Company Membrane electrode assembly and method of its manufacture
US20050131116A1 (en) 2002-07-12 2005-06-16 Qun Sun Process for dissolution of highly fluorinated ion-exchange polymers
CN100523062C (en) * 2001-07-13 2009-08-05 纳幕尔杜邦公司 Process for dissolution of highly fluorinated ion-exchange polymers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54137482A (en) * 1978-04-18 1979-10-25 Asahi Chem Ind Co Ltd Regeneration of flouric cation-exchange membrane
JPS6038973B2 (en) * 1978-04-18 1985-09-04 旭化成株式会社 Method for regenerating fluorine-based cation exchange membrane
JP2002249522A (en) * 2001-02-23 2002-09-06 Nippon Mektron Ltd Carboxy group-containing fluorocopolymer

Also Published As

Publication number Publication date
GB1547534A (en) 1979-06-20
IT1075838B (en) 1985-04-22
FR2361435A1 (en) 1978-03-10
DE2718307A1 (en) 1977-11-17
JPS6145653B2 (en) 1986-10-09
DE2718307B2 (en) 1979-05-03
CA1091406A (en) 1980-12-16
FR2361435B1 (en) 1981-03-27

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