NL7904424A - Cation exchanger membranes used as electrolytic cell diaphragms - contg. fluorocarbon polymers substd. with carboxylic acid side gps. - Google Patents

Cation exchanger membranes used as electrolytic cell diaphragms - contg. fluorocarbon polymers substd. with carboxylic acid side gps.

Info

Publication number
NL7904424A
NL7904424A NL7904424A NL7904424A NL7904424A NL 7904424 A NL7904424 A NL 7904424A NL 7904424 A NL7904424 A NL 7904424A NL 7904424 A NL7904424 A NL 7904424A NL 7904424 A NL7904424 A NL 7904424A
Authority
NL
Netherlands
Prior art keywords
gps
membrane
cation exchanger
contg
ocf2coom
Prior art date
Application number
NL7904424A
Other languages
Dutch (nl)
Other versions
NL177220C (en
NL177220B (en
Original Assignee
Asahi Chemical Ind
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 JP50084112A external-priority patent/JPS5224177A/en
Priority claimed from JP50084111A external-priority patent/JPS5224176A/en
Priority claimed from JP3559376A external-priority patent/JPS52119486A/en
Priority claimed from NLAANVRAGE7607628,A external-priority patent/NL161789C/en
Application filed by Asahi Chemical Ind filed Critical Asahi Chemical Ind
Priority to NLAANVRAGE7904424,A priority Critical patent/NL177220C/en
Publication of NL7904424A publication Critical patent/NL7904424A/en
Publication of NL177220B publication Critical patent/NL177220B/en
Application granted granted Critical
Publication of NL177220C publication Critical patent/NL177220C/en

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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/12—Chemical modification
    • 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
    • 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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

Cation exchanger membrane contains a fluorocarbon polymer contg. carboxylic acid side-gps. having formula -OCF2COOM (where M is H, NH4, quaternary ammonium or a metal atom). The polymer may also contain sulphonic acid side-gps. having formula -OCF2CF2SO3M. Pref. the cation exchanger membrane contains (a) a fluorocarbon polymer contg. -OCF2COOM side-gps. and opt. -OCF2CF2SO3M side-gps. and (b) a fluorocarbon polymer contg. sulphonic acid cation exchanger gps. -OCF2 CF2SO3M. Polymer (a) is present as >=1 layer having thickness >=100 angstroms on surface (pref.) or inside membrane. Surface density of -OCF2COOM is esp. 20-100 mol. %. Membranes are used as diaphragms in electrolytic cells for electrolysis of aq. alkali halide solns. esp. of NaCl for prepn. of halogen and alkali hydroxide. The presence of -OCF2COOM improves membrane service-life. Current yield of membrane remains stable at >90% after months of service. Membrane may consist of 2 bonded polymer foils. In an example a foil was prepd. from a copolymer of C2F4 and perfluoro (3,6-dioxa-4-Me-7-octene sulphonyl fluoride) by reduction of sulphonyl chloride form.
NLAANVRAGE7904424,A 1975-07-09 1979-06-05 METHOD FOR ELECTROLYZING AN AQUEOUS ALKALINE HALOGENIDE SOLUTION, AND CATION EXCHANGE MEMBRANE SUITABLE FOR USE IN THIS PROCESS. NL177220C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7904424,A NL177220C (en) 1975-07-09 1979-06-05 METHOD FOR ELECTROLYZING AN AQUEOUS ALKALINE HALOGENIDE SOLUTION, AND CATION EXCHANGE MEMBRANE SUITABLE FOR USE IN THIS PROCESS.

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP50084112A JPS5224177A (en) 1975-07-09 1975-07-09 Manufacturing method of fluorocarbon cathion exchange membrane
JP50084111A JPS5224176A (en) 1975-07-09 1975-07-09 Cathion exchange membrane
JP3559376A JPS52119486A (en) 1976-03-31 1976-03-31 Fluorocarbon composite membraneous product and production thereof
NLAANVRAGE7607628,A NL161789C (en) 1975-07-09 1976-07-09 METHOD FOR MANUFACTURING A CATION EXCHANGE MEMBRANE
NLAANVRAGE7904424,A NL177220C (en) 1975-07-09 1979-06-05 METHOD FOR ELECTROLYZING AN AQUEOUS ALKALINE HALOGENIDE SOLUTION, AND CATION EXCHANGE MEMBRANE SUITABLE FOR USE IN THIS PROCESS.

Publications (3)

Publication Number Publication Date
NL7904424A true NL7904424A (en) 1979-09-28
NL177220B NL177220B (en) 1985-03-18
NL177220C NL177220C (en) 1985-08-16

Family

ID=27460118

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7904424,A NL177220C (en) 1975-07-09 1979-06-05 METHOD FOR ELECTROLYZING AN AQUEOUS ALKALINE HALOGENIDE SOLUTION, AND CATION EXCHANGE MEMBRANE SUITABLE FOR USE IN THIS PROCESS.

Country Status (1)

Country Link
NL (1) NL177220C (en)

Also Published As

Publication number Publication date
NL177220C (en) 1985-08-16
NL177220B (en) 1985-03-18

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A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V1 Lapsed because of non-payment of the annual fee