FR2288162A1 - CATION EXCHANGER MEMBRANE AND ELECTROLYSIS CELL INCLUDING SUCH A MEMBRANE - Google Patents

CATION EXCHANGER MEMBRANE AND ELECTROLYSIS CELL INCLUDING SUCH A MEMBRANE

Info

Publication number
FR2288162A1
FR2288162A1 FR7531533A FR7531533A FR2288162A1 FR 2288162 A1 FR2288162 A1 FR 2288162A1 FR 7531533 A FR7531533 A FR 7531533A FR 7531533 A FR7531533 A FR 7531533A FR 2288162 A1 FR2288162 A1 FR 2288162A1
Authority
FR
France
Prior art keywords
membrane
treated
ethylene diamine
treatment
nrr
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
FR7531533A
Other languages
French (fr)
Other versions
FR2288162B1 (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.)
Diamond Shamrock Corp
Original Assignee
Diamond Shamrock Corp
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
Priority claimed from US05/587,047 external-priority patent/US4081349A/en
Application filed by Diamond Shamrock Corp filed Critical Diamond Shamrock Corp
Publication of FR2288162A1 publication Critical patent/FR2288162A1/en
Application granted granted Critical
Publication of FR2288162B1 publication Critical patent/FR2288162B1/fr
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
    • 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

1479388 Cation exchange membranes in electrolytic cells DIAMOND SHAMROCK CORP 15 Oct 1975 [16 Oct 1974 16 June 1975] 42309/75 Heading C7B [Also in Division C3] Cation exchange membranes for use in an electrolytic cell are obtained by surface treatment of a membrane comprising a fluorine containing polymer having pendant sulphonyl groups with an acyclic polyamine other than ethylene diamine to convert the sulphonyl groups to the form -SO 2 NRR' NRR", optionally after a pre-treatment with ethylene diamine, on one side, the remaining sulphonyl groups being in the form -SO 3 R where R is H, Na or K. R' is C 3 -C 6 alkylene, Z 2 NR", or ZNR" Z 2 NR", Z is C 2 -C 6 alkylene and R" is R or -SO 2 -. If the membrane is first treated with ethylene diamine, groups to a depth of 2.5-25 microns are converted to -SO 2 NR-C 2 H 4 -NRR". The remainder of the treated depth, up to about 50 microns and to an extent of at least 10 microns in the absence of ethylene diamine treatment, is treated with a polyamine e.g. 1,3-diaminopropane, dipropylene triamine, diethylene triamine, or butylene diamine. Treatment with alkali metal hydroxide converts other sulphonyl groups to the -SO 3 R form. The polymer is preferably a copolymer of tetrafluoroethylene and CF 2 =CFY f SO 2 F where Yf is a C 2 -C 8 bivalent perflourinated aliphatic radical. The membranes are used in the electrolysis of brine with the treated surface facing the cathode.
FR7531533A 1974-10-16 1975-10-15 CATION EXCHANGER MEMBRANE AND ELECTROLYSIS CELL INCLUDING SUCH A MEMBRANE Granted FR2288162A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51516674A 1974-10-16 1974-10-16
US05/587,047 US4081349A (en) 1974-10-16 1975-06-16 Polyamine modified membranes and chlor-alkali electrolysis cells employing same

Publications (2)

Publication Number Publication Date
FR2288162A1 true FR2288162A1 (en) 1976-05-14
FR2288162B1 FR2288162B1 (en) 1978-04-07

Family

ID=27058419

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7531533A Granted FR2288162A1 (en) 1974-10-16 1975-10-15 CATION EXCHANGER MEMBRANE AND ELECTROLYSIS CELL INCLUDING SUCH A MEMBRANE

Country Status (12)

Country Link
JP (1) JPS5164496A (en)
AT (1) AT341546B (en)
DD (2) DD122482A5 (en)
DE (1) DE2546205B2 (en)
FI (1) FI752859A (en)
FR (1) FR2288162A1 (en)
GB (1) GB1479388A (en)
IL (1) IL48307A0 (en)
IN (1) IN143623B (en)
NL (1) NL7512113A (en)
RO (1) RO71151A (en)
SE (1) SE419454B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467247A1 (en) * 1979-10-06 1981-04-17 Toyo Soda Mfg Co Ltd PROCESS FOR ELECTROLYSIS OF ALKALI METAL HALIDES

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2302693B (en) * 1995-06-26 1999-03-10 Tokuyama Corp Fluorine-containing resin molded articles

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2254596A1 (en) * 1973-12-17 1975-07-11 Du Pont

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2254596A1 (en) * 1973-12-17 1975-07-11 Du Pont

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467247A1 (en) * 1979-10-06 1981-04-17 Toyo Soda Mfg Co Ltd PROCESS FOR ELECTROLYSIS OF ALKALI METAL HALIDES

Also Published As

Publication number Publication date
FR2288162B1 (en) 1978-04-07
SE7511538L (en) 1976-04-20
ATA786875A (en) 1977-06-15
DE2546205B2 (en) 1978-02-09
DE2546205A1 (en) 1976-04-29
FI752859A (en) 1976-04-17
SE419454B (en) 1981-08-03
NL7512113A (en) 1976-04-21
DD122482A5 (en) 1976-10-12
GB1479388A (en) 1977-07-13
RO71151A (en) 1980-12-30
JPS5164496A (en) 1976-06-03
DD126821A5 (en) 1977-08-17
IL48307A0 (en) 1975-12-31
AT341546B (en) 1978-02-10
IN143623B (en) 1978-01-07
JPS5439238B2 (en) 1979-11-27
AU8565775A (en) 1977-04-07

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Legal Events

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ST Notification of lapse