GB1516048A - Electrolysis of aqueous solution of sodium chloride - Google Patents

Electrolysis of aqueous solution of sodium chloride

Info

Publication number
GB1516048A
GB1516048A GB3685976A GB3685976A GB1516048A GB 1516048 A GB1516048 A GB 1516048A GB 3685976 A GB3685976 A GB 3685976A GB 3685976 A GB3685976 A GB 3685976A GB 1516048 A GB1516048 A GB 1516048A
Authority
GB
United Kingdom
Prior art keywords
electrolysis
membrane
cfo
cooch
tfe
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
GB3685976A
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.)
AGC Inc
Original Assignee
Asahi Glass 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to GB3685976A priority Critical patent/GB1516048A/en
Publication of GB1516048A publication Critical patent/GB1516048A/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
    • C08J5/2206—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

1516048 Chloralkali electrolysis ASAHI GLASS CO Ltd 6 Sept 1976 36859/76 Heading C7B Chloralkali electrolysis of NaCl is conducted in a cell divided by a fluorinated cation exchange membrane having carboxylic ion-exchange groups, under such conditions that the membrane passes 2À0-3À5 mole of water per Faraday. The membrane desirably has an i-x capacity of 0À5-4À0 meq/gm, a Tg at least 20‹C below the temperature of electrolysis (e.g. below 70‹C), a MW such that its volumetric flow-rate is 100 mm<SP>3</SP>/sec at 150-300‹C, a thickness 20-500Á and an electric resistance 0À5-10 #/cm<SP>2</SP>. Membranes disclosed are hydrolyzed copolymers of TFE with; CF 2 = CFO(CF 2 ) 3 COOCH 3 and optionally also CF 2 = CFOC 3 F 7 ; CF 2 = CFCOOCH 3 ; or CF 2 = CFO-CF 2 (CF 3 )O(CF 2 ) 2 COOCH 3 . Unreactive polymers e.g. polyethylene, polypropylene, or copoly(ethylene/TFE) may be included. A cloth or other porous support therefor is useful. Usual conditions are used with mono or bi-polar operation. An NaCl concentration of 2À5-4À5N may be maintained.
GB3685976A 1976-09-06 1976-09-06 Electrolysis of aqueous solution of sodium chloride Expired GB1516048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3685976A GB1516048A (en) 1976-09-06 1976-09-06 Electrolysis of aqueous solution of sodium chloride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3685976A GB1516048A (en) 1976-09-06 1976-09-06 Electrolysis of aqueous solution of sodium chloride

Publications (1)

Publication Number Publication Date
GB1516048A true GB1516048A (en) 1978-06-28

Family

ID=10391762

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3685976A Expired GB1516048A (en) 1976-09-06 1976-09-06 Electrolysis of aqueous solution of sodium chloride

Country Status (1)

Country Link
GB (1) GB1516048A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449138A1 (en) * 1979-02-16 1980-09-12 Asahi Chemical Ind PROCESS FOR THE ELECTROLYSIS OF AN ALKALI METAL CHLORIDE
EP0171696A1 (en) * 1984-08-08 1986-02-19 Hoechst Aktiengesellschaft Method of electrolyzing sodium chloride
US4602045A (en) * 1980-11-27 1986-07-22 Ici Australia Limited Cation-exchange resins and use as membranes in electrolytic cells
US5595676A (en) * 1992-07-30 1997-01-21 Imperial Chemical Industries Plc Fluorinated polymers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2449138A1 (en) * 1979-02-16 1980-09-12 Asahi Chemical Ind PROCESS FOR THE ELECTROLYSIS OF AN ALKALI METAL CHLORIDE
US4602045A (en) * 1980-11-27 1986-07-22 Ici Australia Limited Cation-exchange resins and use as membranes in electrolytic cells
EP0171696A1 (en) * 1984-08-08 1986-02-19 Hoechst Aktiengesellschaft Method of electrolyzing sodium chloride
US4604172A (en) * 1984-08-08 1986-08-05 Hoechst Aktiengesellschaft Process for the electrolysis of sodium chloride
US5595676A (en) * 1992-07-30 1997-01-21 Imperial Chemical Industries Plc Fluorinated polymers

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Legal Events

Date Code Title Description
PS Patent sealed
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19920906