FI801733A - Nytt fluorinerat katjonbytarmembran och foerfarande foer dess framstaellning - Google Patents

Nytt fluorinerat katjonbytarmembran och foerfarande foer dess framstaellning

Info

Publication number
FI801733A
FI801733A FI801733A FI801733A FI801733A FI 801733 A FI801733 A FI 801733A FI 801733 A FI801733 A FI 801733A FI 801733 A FI801733 A FI 801733A FI 801733 A FI801733 A FI 801733A
Authority
FI
Finland
Prior art keywords
membrane
acid groups
novel
katjonbytarmembran
fluorinerat
Prior art date
Application number
FI801733A
Other languages
English (en)
Other versions
FI72530B (fi
FI72530C (fi
Inventor
Kyoji Kimoto
Hirotsugu Miyauchi
Jukichi Ohmura
Mikio Ebisawa
Toshioki Hane
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 JP54067888A external-priority patent/JPS6045653B2/ja
Priority claimed from JP6788979A external-priority patent/JPS55160007A/ja
Priority claimed from JP54085852A external-priority patent/JPS5910658B2/ja
Priority claimed from JP9030279A external-priority patent/JPS5616460A/ja
Priority claimed from JP9030179A external-priority patent/JPS5912116B2/ja
Application filed by Asahi Chemical Ind filed Critical Asahi Chemical Ind
Publication of FI801733A publication Critical patent/FI801733A/fi
Publication of FI72530B publication Critical patent/FI72530B/fi
Application granted granted Critical
Publication of FI72530C publication Critical patent/FI72530C/fi

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D327/00Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms
    • C07D327/02Heterocyclic compounds containing rings having oxygen and sulfur atoms as the only ring hetero atoms one oxygen atom and one sulfur atom
    • C07D327/04Five-membered rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/78Halides of sulfonic acids
    • C07C309/79Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms
    • C07C309/82Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms of a carbon skeleton substituted by singly-bound oxygen atoms
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/78Halides of sulfonic acids
    • C07C309/79Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms
    • C07C309/84Halides of sulfonic acids having halosulfonyl groups bound to acyclic carbon atoms of a carbon skeleton substituted by carboxyl groups
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C317/00Sulfones; Sulfoxides
    • C07C317/16Sulfones; Sulfoxides having sulfone or sulfoxide groups and singly-bound oxygen atoms bound to the same carbon skeleton
    • C07C317/18Sulfones; Sulfoxides having sulfone or sulfoxide groups and singly-bound oxygen atoms bound to the same carbon skeleton with sulfone or sulfoxide groups bound to acyclic carbon atoms of the carbon skeleton
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C323/00Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
    • C07C323/10Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton
    • C07C323/11Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
    • C07C323/12Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and singly-bound oxygen atoms bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being acyclic and saturated
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F214/00Copolymers 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
    • C08F214/18Monomers containing fluorine
    • C08F214/184Monomers containing fluorine with fluorinated vinyl ethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F214/00Copolymers 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
    • C08F214/18Monomers containing fluorine
    • C08F214/26Tetrafluoroethene
    • C08F214/262Tetrafluoroethene with fluorinated vinyl ethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F216/00Copolymers 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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
    • C08F216/12Copolymers 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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
    • C08F216/14Monomers containing only one unsaturated aliphatic radical
    • C08F216/1466Monomers containing sulfur
    • C08F216/1475Monomers containing sulfur and oxygen
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00Chemical modification by after-treatment
    • C08F8/04Reduction, e.g. hydrogenation
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F8/00Chemical modification by after-treatment
    • C08F8/12Hydrolysis
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/20Manufacture of shaped structures of ion-exchange resins
    • C08J5/22Films, membranes or diaphragms
    • C08J5/2206Films, membranes or diaphragms based on organic and/or inorganic macromolecular compounds
    • C08J5/2218Synthetic macromolecular compounds
    • C08J5/2231Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds
    • C08J5/2237Synthetic macromolecular compounds based on macromolecular compounds obtained by reactions involving unsaturated carbon-to-carbon bonds containing fluorine
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00Characterised 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
    • C08J2327/02Characterised 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
    • C08J2327/12Characterised 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)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FI801733A 1979-05-31 1980-05-28 Fluorerat katjonbytarmembran och laminat samt foerfarande foer dess framstaellning. FI72530C (fi)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP6788979 1979-05-31
JP54067888A JPS6045653B2 (ja) 1979-05-31 1979-05-31 新規なフツ素化陽イオン交換膜及びその製造方法
JP6788879 1979-05-31
JP6788979A JPS55160007A (en) 1979-05-31 1979-05-31 Novel fluorinated copolymer and production thereof
JP8585279 1979-07-09
JP54085852A JPS5910658B2 (ja) 1979-07-09 1979-07-09 新規なフツ素化ビニルエ−テル化合物及びその製法
JP9030179 1979-07-18
JP9030279A JPS5616460A (en) 1979-07-18 1979-07-18 Novel fluorinated carboxylic acid derivative and its preparation
JP9030279 1979-07-18
JP9030179A JPS5912116B2 (ja) 1979-07-18 1979-07-18 新規なフッ素化酸フッ化物及びその製造方法

Publications (3)

Publication Number Publication Date
FI801733A true FI801733A (fi) 1980-12-01
FI72530B FI72530B (fi) 1987-02-27
FI72530C FI72530C (fi) 1987-06-08

Family

ID=27524071

Family Applications (1)

Application Number Title Priority Date Filing Date
FI801733A FI72530C (fi) 1979-05-31 1980-05-28 Fluorerat katjonbytarmembran och laminat samt foerfarande foer dess framstaellning.

Country Status (12)

Country Link
US (4) US4329434A (fi)
BR (1) BR8003432A (fi)
CA (2) CA1185398A (fi)
DE (4) DE3046501A1 (fi)
FI (1) FI72530C (fi)
FR (4) FR2457880B1 (fi)
IN (1) IN154418B (fi)
IT (1) IT1193942B (fi)
NL (1) NL184740C (fi)
NO (1) NO153398C (fi)
PT (1) PT72131B (fi)
SE (1) SE449999B (fi)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
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US4329435A (en) * 1979-05-31 1982-05-11 Asahi Kasei Kogyo Kabushiki Kaisha Novel fluorinated copolymer with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof
DE3050931C2 (de) * 1979-05-31 1994-06-09 Asahi Chemical Ind Fluorierte Carbonsäure-Derivate und Verfahren zu ihrer Herstellung
US4786442A (en) * 1980-04-03 1988-11-22 E. I. Du Pont De Nemours And Company Alkyl perfluoro(2-methyl-5-oxo-3-oxahexanoate)
JPS5792028A (en) * 1980-11-29 1982-06-08 Asahi Chem Ind Co Ltd Fluorocarbon cation exchange membrane
US4399009A (en) * 1981-01-19 1983-08-16 Oronzio Denora Impianti Elettrochimici S.P.A. Electrolytic cell and method
JPS58199884A (ja) * 1982-05-18 1983-11-21 Asahi Glass Co Ltd 改良された電解用陽イオン交換膜
US4766248A (en) * 1982-07-19 1988-08-23 E. I. Du Pont De Nemours And Company β-substituted polyfluoroethyl compounds
US4675453A (en) * 1983-12-27 1987-06-23 E. I. Du Pont De Nemours And Company Process and intermediates for fluorinated vinyl ether monomer
US4556747A (en) * 1983-12-27 1985-12-03 E. I. Du Pont De Nemours And Company Fluorinated vinyl ethers, copolymers thereof, and precursors thereto
US4526948A (en) * 1983-12-27 1985-07-02 E. I. Du Pont De Nemours And Company Fluorinated vinyl ethers, copolymers thereof, and precursors thereto
US4590015A (en) * 1983-12-27 1986-05-20 E. I. Du Pont De Nemours And Company Fluorinated polyether carboxylic acid fluorides
US4474899A (en) * 1983-12-27 1984-10-02 E. I. Du Pont De Nemours And Company Process for preparing ester fluorinated ion exchange polymer precursor by acid treatment of ether
EP0155173B1 (en) * 1984-03-12 1989-10-18 Tokuyama Soda Kabushiki Kaisha Process for preparation of fluorine-containing polymer films
EP0192143B1 (en) * 1985-02-09 1996-01-10 Asahi Kasei Kogyo Kabushiki Kaisha Permeable polymer membrane for desiccation of gas
US4604323A (en) * 1985-02-22 1986-08-05 E. I. Du Pont De Nemours And Company Multilayer cation exchange membrane
EP0260713B1 (en) * 1986-09-19 1991-03-06 AUSIMONT S.p.A. Process for the preparation of perfluoroacyl fluorides
DE3707367A1 (de) * 1987-03-07 1988-09-15 Hoechst Ag Umsetzung von hexafluorpropenoxid mit fluorierten carbonsaeurefluoriden
US4940525A (en) * 1987-05-08 1990-07-10 The Dow Chemical Company Low equivalent weight sulfonic fluoropolymers
US5006624A (en) * 1987-05-14 1991-04-09 The Dow Chemical Company Fluorocarbon containing, reactive polymeric surfactants and coating compositions therefrom
DE3850957T2 (de) * 1987-09-17 1995-03-30 Commw Scient Ind Res Org Neutralisierte perfluoro-3,6-dioxa-4-methyl-7-octen sulphonyl fluorid kopolymer fläche zur befestigung und zucht tierischer zellen.
US5880241A (en) * 1995-01-24 1999-03-09 E. I. Du Pont De Nemours And Company Olefin polymers
US5536754A (en) * 1995-02-15 1996-07-16 E. I. Du Pont De Nemours And Company Fluorinated ion-exchange polymers and intermediates therefor
US5830962A (en) * 1995-02-15 1998-11-03 E. I. Du Pont De Nemours And Company Fluorinated ion-exchange polymers and intermediates therefor
US5475143A (en) * 1995-02-15 1995-12-12 E. I. Du Pont De Nemours And Company Fluorinated ion-exchange polymers and intermediates therefor
GB2302693B (en) * 1995-06-26 1999-03-10 Tokuyama Corp Fluorine-containing resin molded articles
US5782472A (en) * 1995-09-25 1998-07-21 Steven R. Pyykkonen Device for combining a game of chance and craps
US5871461A (en) * 1996-07-12 1999-02-16 Empi, Inc. Method of making an iontophoresis electrode
WO1998002207A1 (en) * 1996-07-12 1998-01-22 Empi, Inc. Iontophoresis electrode
US6285816B1 (en) * 1999-04-13 2001-09-04 Wisconsin Alumni Research Foundation Waveguide
DE10159191B4 (de) * 2001-11-29 2006-05-11 Leibniz-Institut Für Polymerforschung Dresden E.V. Modifizierte Hohlfasermembranmaterialien und Verfahren zu ihrer Modifizierung
EP1538168A1 (en) * 2002-06-07 2005-06-08 David Fuel Cell Components, S.L. Method of obtaining perfluorosulphonate polymers containing sulphonyl functional groups
US6624328B1 (en) 2002-12-17 2003-09-23 3M Innovative Properties Company Preparation of perfluorinated vinyl ethers having a sulfonyl fluoride end-group
US7348088B2 (en) * 2002-12-19 2008-03-25 3M Innovative Properties Company Polymer electrolyte membrane
ITMI20030444A1 (it) * 2003-03-11 2004-09-12 Solvay Solexis Spa Processo per preparare (per)fluoroalogenoeteri.
ATE482929T1 (de) 2003-07-04 2010-10-15 Asahi Glass Co Ltd Verfahren zur herstellung fluorierter sulfonylfluoride
US11628381B2 (en) 2012-09-17 2023-04-18 W.R. Grace & Co. Conn. Chromatography media and devices
CA2919820C (en) 2013-07-31 2022-07-19 Council Of Scientific & Industrial Research Anion exchange membrane for electrodialysis applications and process for the preparation thereof
ES2929099T3 (es) 2014-05-02 2022-11-24 Grace W R & Co Material de soporte funcionalizado y métodos de fabricación y uso de material de soporte funcionalizado
JP2018517559A (ja) 2015-06-05 2018-07-05 ダブリュー・アール・グレース・アンド・カンパニー−コーンW R Grace & Co−Conn 吸着性バイオプロセス清澄化剤並びにその製造及び使用方法
US10756373B2 (en) * 2017-12-22 2020-08-25 Chinbay Q. Fan Fuel cell system and method of providing surfactant fuel bubbles
US11905350B2 (en) 2019-09-09 2024-02-20 Compact Membrane Systems, Inc. Gas permeable fluoropolymers and ionomers

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US3062879A (en) * 1961-05-15 1962-11-06 Du Pont Process for preparing perfluoroalkanedioic acids
US3624053A (en) * 1963-06-24 1971-11-30 Du Pont Trifluorovinyl sulfonic acid polymers
US3301893A (en) * 1963-08-05 1967-01-31 Du Pont Fluorocarbon ethers containing sulfonyl groups
GB1034197A (en) * 1963-09-13 1966-06-29 Du Pont Sulphonic acid derivatives of fluorocarbon vinyl ethers, and polymers thereof
US3282875A (en) * 1964-07-22 1966-11-01 Du Pont Fluorocarbon vinyl ether polymers
US3437686A (en) * 1966-03-07 1969-04-08 Ashland Oil Inc Perfluorinated thiodiglycolic acid and derivatives thereof
CA1026038A (en) * 1973-06-14 1978-02-07 Foster Grant Co. Styrene-acrylonitrile grafted polybutadiene polymeric composition having high impact at low rubber levels
US4178218A (en) * 1974-03-07 1979-12-11 Asahi Kasei Kogyo Kabushiki Kaisha Cation exchange membrane and use thereof in the electrolysis of sodium chloride
JPS551351B2 (fi) * 1974-03-07 1980-01-12
JPS5177241A (ja) 1974-12-11 1976-07-05 Hiroo Nakamoto Denshishashinyofukushasochi
JPS5224176A (en) * 1975-07-09 1977-02-23 Asahi Chem Ind Co Ltd Cathion exchange membrane
IT1061477B (it) * 1975-07-09 1983-02-28 Asahi Chemical Ind Membrana scambiatrice di cationi sua preparazione e suo impiego
JPS5224177A (en) * 1975-07-09 1977-02-23 Asahi Chem Ind Co Ltd Manufacturing method of fluorocarbon cathion exchange membrane
US4151053A (en) * 1975-07-09 1979-04-24 Asahi Kasei Kogyo Kabushiki Kaisha Cation exchange membrane preparation and use thereof
JPS5223192A (en) * 1975-08-15 1977-02-21 Asahi Glass Co Ltd Preparation of improved fluoropolymer bearing cation exchange groups
GB1518387A (en) * 1975-08-29 1978-07-19 Asahi Glass Co Ltd Fluorinated cation exchange membrane and use thereof in electrolysis of an alkali metal halide
JPS5228588A (en) * 1975-08-29 1977-03-03 Asahi Glass Co Ltd Method for manufacturing an improved fluoropolymer having cation excha nge groups
JPS5833249B2 (ja) * 1975-09-19 1983-07-19 旭硝子株式会社 含フツ素陽イオン交換樹脂膜
BG23472A1 (fi) 1975-12-05 1977-09-15
JPS5284191A (en) * 1975-12-30 1977-07-13 Asahi Glass Co Ltd Improved f-contg. cation exchange resin membrane
NL187439C (nl) * 1976-08-06 1991-10-01 Montedison Spa Werkwijze voor het bereiden van fluorbevattende copolymeren, werkwijze voor het verknopen van copolymeren, membraan voor elektrolyse cel en werkwijze voor de bereiding van gefluoreerde alkenen.
JPS5349090A (en) * 1976-10-15 1978-05-04 Asahi Glass Co Ltd Preparation of fluorinated plymer containing ion exchange group
JPS5359842U (fi) * 1976-10-25 1978-05-22
FR2388013B1 (fr) * 1977-04-20 1985-08-02 Du Pont Polymeres fluores echangeurs d'ions contenant des groupes carboxyliques, leur preparation et leur utilisation dans des cellules d'electrolyse chlore-alcali
FR2388012A1 (fr) * 1977-04-20 1978-11-17 Du Pont Polymere fluore echangeur d'ions contenant des groupes carboxyliques et pellicules et membranes constituees de ce polymere
US4176215A (en) * 1978-03-13 1979-11-27 E. I. Du Pont De Nemours And Company Ion-exchange structures of copolymer blends useful in electrolytic cells

Also Published As

Publication number Publication date
SE8003901L (sv) 1980-12-01
US4555369A (en) 1985-11-26
NO153398C (no) 1986-03-12
FR2457880B1 (fi) 1986-07-04
FR2457880A1 (fi) 1980-12-26
FR2508039A1 (fi) 1982-12-24
DE3050439C2 (fi) 1989-11-09
IT1193942B (it) 1988-08-31
CA1168263A (en) 1984-05-29
US4329434A (en) 1982-05-11
FR2483431B1 (fr) 1986-03-21
FR2483431A1 (fr) 1981-12-04
FR2508039B1 (fi) 1985-02-15
SE449999B (sv) 1987-06-01
IN154418B (fi) 1984-10-27
US4510328A (en) 1985-04-09
IT8022468A0 (it) 1980-05-30
DE3020057C2 (fi) 1987-06-25
PT72131A (en) 1980-12-01
US4597913A (en) 1986-07-01
NL8003174A (nl) 1980-12-02
NO801637L (no) 1980-12-01
FR2473533A1 (fr) 1981-07-17
NL184740C (nl) 1989-10-16
DE3050439A1 (fi) 1982-07-22
DE3046501A1 (de) 1983-02-17
PT72131B (en) 1981-09-24
BR8003432A (pt) 1981-01-05
NO153398B (no) 1985-12-02
CA1185398A (en) 1985-04-09
FI72530B (fi) 1987-02-27
DE3046501C2 (fi) 1987-04-23
DE3050782C2 (fi) 1988-05-26
DE3020057A1 (de) 1981-05-27
FR2473533B1 (fr) 1986-02-28
FI72530C (fi) 1987-06-08

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