FR2440417A1 - POLYMERIC MICROPOROUS SEPARATORS FOR USE IN ELECTROLYTIC PROCESSES AND DEVICES - Google Patents

POLYMERIC MICROPOROUS SEPARATORS FOR USE IN ELECTROLYTIC PROCESSES AND DEVICES

Info

Publication number
FR2440417A1
FR2440417A1 FR7927002A FR7927002A FR2440417A1 FR 2440417 A1 FR2440417 A1 FR 2440417A1 FR 7927002 A FR7927002 A FR 7927002A FR 7927002 A FR7927002 A FR 7927002A FR 2440417 A1 FR2440417 A1 FR 2440417A1
Authority
FR
France
Prior art keywords
hysteresis
separator
pores
mercury
separators
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.)
Withdrawn
Application number
FR7927002A
Other languages
French (fr)
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.)
Occidental Chemical Corp
Original Assignee
Hooker Chemicals and Plastics 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 US06/076,884 external-priority patent/US4250002A/en
Application filed by Hooker Chemicals and Plastics Corp filed Critical Hooker Chemicals and Plastics Corp
Publication of FR2440417A1 publication Critical patent/FR2440417A1/en
Withdrawn legal-status Critical Current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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/26—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • 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
    • C25B13/00—Diaphragms; Spacing elements
    • 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
    • C25B13/00—Diaphragms; Spacing elements
    • C25B13/04—Diaphragms; Spacing elements characterised by the material
    • C25B13/08—Diaphragms; Spacing elements characterised by the material based on organic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/006—Pressing and sintering powders, granules or fibres
    • 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

L'INVENTION CONCERNE DES SEPARATEURS MICROPOREUX POLYMERES POUR CELLULES ELECTROLYTIQUES POUR LA PRODUCTION D'UN HYDROXYDE DE METAL ALCALIN AVEC DES RENDEMENTS ELEVES DU COURANT. CES SEPARATEURS ONT: A.UNE POROSITE D'AU MOINS 60 ENVIRON; B.UNE EPAISSEUR COMPRISE ENTRE 0,2 ET 3,3MM ENVIRON; C.UNE HYSTERESIS COMPRISE ENTRE 0,30 ET 0,99, L'HYSTERESIS ETANT DEFINIE COMME LE RAPPORT DE LA QUANTITE DE MERCURE EMPRISONNEE DANS LA STRUCTURE POREUSE DU SEPARATEUR APRES RELACHEMENT DE LA PRESSION A 0,07KGCM A LA QUANTITE DE MERCURE PRESENTE QUAND LE SEPARATEUR EST SOUMIS INITIALEMENT A UNE IMPREGNATION TOTALE PAR LE MERCURE A 3500KGCM; ET D.UNE DISTRIBUTION DES GROSSEURS DE PORES DANS UN INTERVALLE COMPRIS ENTRE 0,004 ET 34MICRONS, AU MOINS 85 DES PORES AYANT UN DIAMETRE COMPRIS ENTRE 0,12 ET 33MICRONS ET AU MOINS 60 DES PORES AYANT UN DIAMETRE COMPRIS ENTRE 0,59 ET 33MICRONS; OU LA POROSITE, L'EPAISSEUR, L'HYSTERESIS ET LA DISTRIBUTION DES GROSSEURS DE PORES SONT ADAPTEES DE MANIERE A DONNER AU SEPARATEUR LA PROPRIETE DE PRESENTER UN RENDEMENT ELEVE DU COURANT, COMPRENANT UN RENDEMENT DU COURANT D'ENVIRON 85 A ENVIRON 98 QUAND IL EST MESURE A UNE CONCENTRATION D'HYDROXYDE DE SODIUM DE 150GPL. APPLICATION AUX CELLULES ELECTROLYTIQUES.THE INVENTION CONCERNS POLYMERIC MICROPOROUS SEPARATORS FOR ELECTROLYTIC CELLS FOR THE PRODUCTION OF AN ALKALINE METAL HYDROXIDE WITH HIGH CURRENT YIELDS. THESE SEPARATORS HAVE: A. A POROSITY OF AT LEAST ABOUT 60; B. A THICKNESS BETWEEN APPROXIMATELY 0.2 AND 3.3MM; C. A HYSTERESIS BETWEEN 0.30 AND 0.99, HYSTERESIS BEING DEFINED AS THE RATIO OF THE AMOUNT OF MERCURY PRISONED IN THE POROUS STRUCTURE OF THE SEPARATOR AFTER PRESSURE RELEASED AT 0.07KGCM TO THE AMOUNT OF MERCURY PRESENT WHEN THE SEPARATOR IS INITIALLY SUBJECT TO TOTAL MERCURY IMPREGNATION AT 3500KGCM; AND D. A DISTRIBUTION OF PORE SIZES WITHIN A RANGE BETWEEN 0.004 AND 34MICRONS, AT LEAST 85 PORES WITH A DIAMETER BETWEEN 0.12 AND 33MICRONS AND AT LEAST 60 PORES WITH A DIAMETER BETWEEN 0.59 AND 33MICRONS; WHERE THE POROSITY, THICKNESS, HYSTERESIS AND THE DISTRIBUTION OF PORES SIZES ARE SUITABLE TO GIVE THE SEPARATOR THE PROPERTY OF PRESENTING A HIGH CURRENT EFFICIENCY, INCLUDING A CURRENT EFFICIENCY OF ABOUT 85 TO ABOUT 98 WHEN IT IS MEASURED AT A CONCENTRATION OF SODIUM HYDROXIDE OF 150GPL. APPLICATION TO ELECTROLYTIC CELLS.

FR7927002A 1978-11-03 1979-10-31 POLYMERIC MICROPOROUS SEPARATORS FOR USE IN ELECTROLYTIC PROCESSES AND DEVICES Withdrawn FR2440417A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95751578A 1978-11-03 1978-11-03
US06/076,884 US4250002A (en) 1979-09-19 1979-09-19 Polymeric microporous separators for use in electrolytic processes and devices

Publications (1)

Publication Number Publication Date
FR2440417A1 true FR2440417A1 (en) 1980-05-30

Family

ID=26758579

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7927002A Withdrawn FR2440417A1 (en) 1978-11-03 1979-10-31 POLYMERIC MICROPOROUS SEPARATORS FOR USE IN ELECTROLYTIC PROCESSES AND DEVICES

Country Status (11)

Country Link
AR (1) AR228946A1 (en)
AU (1) AU528188B2 (en)
BR (1) BR7907170A (en)
CA (1) CA1179974A (en)
DD (1) DD148239A5 (en)
DE (1) DE2944251A1 (en)
FR (1) FR2440417A1 (en)
GB (1) GB2037293B (en)
NZ (1) NZ191813A (en)
PL (1) PL127042B1 (en)
SE (1) SE7909075L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4891107A (en) * 1985-09-19 1990-01-02 H-D Tech Inc. Porous diaphragm for electrochemical cell

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280435A1 (en) * 1974-08-02 1976-02-27 Rhone Poulenc Ind PROCESS FOR OBTAINING A MICROPOREOUS MEMBRANE AND NEW PRODUCT THUS OBTAINED
US4098672A (en) * 1973-07-18 1978-07-04 Imperial Chemical Industries Limited Porous diaphragms
US4110153A (en) * 1977-09-08 1978-08-29 Ppg Industries, Inc. Method of forming a microporous diaphragm

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1081046A (en) * 1965-08-31 1967-08-31 Ici Ltd Manufacture of porous diaphragms
US3944477A (en) * 1974-10-15 1976-03-16 Basf Wyandotte Corporation Diaphragm for electrolytic cell for chlorine production

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098672A (en) * 1973-07-18 1978-07-04 Imperial Chemical Industries Limited Porous diaphragms
FR2280435A1 (en) * 1974-08-02 1976-02-27 Rhone Poulenc Ind PROCESS FOR OBTAINING A MICROPOREOUS MEMBRANE AND NEW PRODUCT THUS OBTAINED
US4110153A (en) * 1977-09-08 1978-08-29 Ppg Industries, Inc. Method of forming a microporous diaphragm

Also Published As

Publication number Publication date
CA1179974A (en) 1984-12-27
PL127042B1 (en) 1983-09-30
SE7909075L (en) 1980-05-04
GB2037293B (en) 1983-04-07
PL219432A1 (en) 1980-11-03
NZ191813A (en) 1982-09-07
AR228946A1 (en) 1983-05-13
GB2037293A (en) 1980-07-09
DE2944251A1 (en) 1980-05-08
AU528188B2 (en) 1983-04-21
DD148239A5 (en) 1981-05-13
AU5218879A (en) 1980-05-15
BR7907170A (en) 1980-07-08

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Legal Events

Date Code Title Description
ST Notification of lapse