GB1479388A - Electrolytic cells - Google Patents

Electrolytic cells

Info

Publication number
GB1479388A
GB1479388A GB42309/75A GB4230975A GB1479388A GB 1479388 A GB1479388 A GB 1479388A GB 42309/75 A GB42309/75 A GB 42309/75A GB 4230975 A GB4230975 A GB 4230975A GB 1479388 A GB1479388 A GB 1479388A
Authority
GB
United Kingdom
Prior art keywords
treated
ethylene diamine
treatment
nrr
microns
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
GB42309/75A
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 GB1479388A publication Critical patent/GB1479388A/en
Expired 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.
GB42309/75A 1974-10-16 1975-10-15 Electrolytic cells Expired GB1479388A (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 (1)

Publication Number Publication Date
GB1479388A true GB1479388A (en) 1977-07-13

Family

ID=27058419

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42309/75A Expired GB1479388A (en) 1974-10-16 1975-10-15 Electrolytic cells

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
GB2302693B (en) * 1995-06-26 1999-03-10 Tokuyama Corp Fluorine-containing resin molded articles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5655577A (en) * 1979-10-06 1981-05-16 Toyo Soda Mfg Co Ltd Electrolyzing method for alkali metal halide

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969285A (en) * 1973-12-17 1976-07-13 E. I. Du Pont De Nemours And Company Heat-treated fluorocarbon sulfonylamine cation permselectivity

Cited By (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

Also Published As

Publication number Publication date
DD122482A5 (en) 1976-10-12
FR2288162B1 (en) 1978-04-07
AT341546B (en) 1978-02-10
FR2288162A1 (en) 1976-05-14
AU8565775A (en) 1977-04-07
RO71151A (en) 1980-12-30
FI752859A (en) 1976-04-17
DD126821A5 (en) 1977-08-17
SE7511538L (en) 1976-04-20
JPS5164496A (en) 1976-06-03
JPS5439238B2 (en) 1979-11-27
DE2546205B2 (en) 1978-02-09
IL48307A0 (en) 1975-12-31
IN143623B (en) 1978-01-07
SE419454B (en) 1981-08-03
ATA786875A (en) 1977-06-15
NL7512113A (en) 1976-04-21
DE2546205A1 (en) 1976-04-29

Similar Documents

Publication Publication Date Title
FR2275298A1 (en) COMPOSITE CATION EXCHANGER MEMBRANE AND ITS USE IN THE ELECTROLYSIS OF AN ALKALINE METAL HALOGENIDE
SE7703520L (en) ELECTROLYSIS OF ALKALIMETAL HALID SOLUTION
NZ195570A (en) Cation exchange resin based on perhalogenated fluorine-containing polymer
IT1069021B (en) PROCESS FOR THE PRODUCTION OF ALKALINE METAL HYDROXIDE
IT1129825B (en) PROCEDURE AND ELECTROLYTIC CELL FOR THE PRODUCTION OF CHLORINE AND ALKALI WITH THE USE OF AN ELECTROLYTE CONSTITUTED BY POLYMER MONEY
GB1532683A (en) Reinforced film membrane and cation permeable separator produced therefrom
IT1166581B (en) CATIONIC MEMBRANES BASED ON STYRENE DIVINYLBENZENE AND 2- OR 4-VINYLPYRIDINE OR ACRYLIC ACID SULPHONATED COPOLYMERS, PROCEDURE FOR THEIR PREPARATION AND USE IN ELECTROLYSIS CELLS
SE8100305L (en) SOLID POLYMER ELECTROLYT AND PROCEDURE FOR ITS PREPARATION
JPS5311199A (en) Electrolyzing method and electrolytic cell
IL54539A (en) Fluorinated ion exchange polymers containing carboxylic groups,their production and their use as membranes in chloralkali electrolysis cells
FR2288162B1 (en)
ES478573A1 (en) their preparation and their use in the electrolysis of sodium chloride.
NZ187023A (en) Fluorinated ion-exchanger polymers
IL48306A (en) Electrolytic cell of the membrane type
GB2053969B (en) Cation exchange membranes
IT1056147B (en) Cation exchange membrane of fluoro polymer - with sulphonyl gps. modified by amination, for electrolysis of alkali chlorides
JPS5625985A (en) Anode for alkali chloride electrolysis
JPS5248597A (en) Method for electrolysis of alkali halide
JPS5625984A (en) Anode for alkali chloride electrolysis
SU882192A1 (en) METHOD OF OBTAINING ION-EXCHANGE MEMBRANE
JPS5665989A (en) Electrolysis method of alkali metal halogenide
JPS57155389A (en) Electrolysis of common salt

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee