FR2362890A1 - Produits microporeux et procede pour leur fabrication - Google Patents

Produits microporeux et procede pour leur fabrication

Info

Publication number
FR2362890A1
FR2362890A1 FR7726158A FR7726158A FR2362890A1 FR 2362890 A1 FR2362890 A1 FR 2362890A1 FR 7726158 A FR7726158 A FR 7726158A FR 7726158 A FR7726158 A FR 7726158A FR 2362890 A1 FR2362890 A1 FR 2362890A1
Authority
FR
France
Prior art keywords
polymer
polymers
microporous
diameter
cells
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.)
Granted
Application number
FR7726158A
Other languages
English (en)
Other versions
FR2362890B1 (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.)
Akzo NV
Original Assignee
Akzo NV
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 Akzo NV filed Critical Akzo NV
Publication of FR2362890A1 publication Critical patent/FR2362890A1/fr
Application granted granted Critical
Publication of FR2362890B1 publication Critical patent/FR2362890B1/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0018—Thermally induced processes [TIPS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B01D71/261—Polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B01D71/262—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/44—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26-B01D71/42
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N7/00—Shells for rollers of printing machines
    • 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
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/149—Antislip compositions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/46—Impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/026—Sponge structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N2207/00—Location or type of the layers in shells for rollers of printing machines
    • B41N2207/02—Top layers
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/052—Inducing phase separation by thermal treatment, e.g. cooling a solution
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
    • C08J2201/0542—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition
    • C08J2201/0543—Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition the non-solvent being organic
    • 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
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
    • C08J2201/0545—Precipitating the polymer by adding a non-solvent or a different solvent from an aqueous solvent-based polymer composition
    • C08J2201/0546—Precipitating the polymer by adding a non-solvent or a different solvent from an aqueous solvent-based polymer composition the non-solvent being organic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Toxicology (AREA)
  • Dentistry (AREA)
  • Agronomy & Crop Science (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Structure de polymère cellulaire microporeuse tridimensionnelle, relativement homogène. Elle comprend une multiplicité de cellules pratiquement sphériques dont le diamètre moyen est compris entre 0,5 et 100 microns environ, distribuées de façon pratiquement uniforme sur toute l'étendue de la structure, des cellules voisines étant interconnectées par des pores dont le diamètre est plus petit que celui des microcellules, le rapport du diamètre moyen des cellules au diamètre moyen des pores se situant entre 2 :1 et 200 :1 environ, les pores et les cellules étant vides et le polymère étant un polymère sysnthétique thermoplastique choisi dans le groupe constitué par des polymères oléfiniques, des polymères de condensation, des polymères d'oxydation et des mélanges de ceux-ci; on prépare ces polymères microporeux en chauffant un mélange du polymère et d'un liquide compatible pour former une solution homogène, en refroidissant cette solution dans des conditions de non équilibre thermodynamique pour déclencher une séparation de phases liquide-liquide, et en poursuivant le refroidissement jusqu'à ce que la matière acquiere une résistance suffisante à la manipulation. Application : produits de polymères microporeux qui contiennent des quantités relativement grandes de liquides fonctionnellement utiles en se comportant comme des solides.
FR7726158A 1976-08-30 1977-08-29 Produits microporeux et procede pour leur fabrication Granted FR2362890A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71854976A 1976-08-30 1976-08-30
US81435177A 1977-07-11 1977-07-11

Publications (2)

Publication Number Publication Date
FR2362890A1 true FR2362890A1 (fr) 1978-03-24
FR2362890B1 FR2362890B1 (fr) 1985-04-12

Family

ID=27109924

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7726158A Granted FR2362890A1 (fr) 1976-08-30 1977-08-29 Produits microporeux et procede pour leur fabrication

Country Status (22)

Country Link
JP (2) JPS5329367A (fr)
AR (1) AR220685A1 (fr)
AT (1) AT375665B (fr)
AU (1) AU511101B2 (fr)
BR (1) BR7705790A (fr)
CA (1) CA1110811A (fr)
CH (1) CH649565A5 (fr)
DD (1) DD140052A5 (fr)
DE (1) DE2737745C2 (fr)
DK (1) DK171108B1 (fr)
ES (2) ES461970A1 (fr)
FI (1) FI68639C (fr)
FR (1) FR2362890A1 (fr)
GB (1) GB1576228A (fr)
GR (1) GR64881B (fr)
IT (1) IT1143677B (fr)
MX (1) MX148613A (fr)
NL (1) NL7709505A (fr)
NO (1) NO151369C (fr)
PL (1) PL111017B1 (fr)
SE (1) SE441928B (fr)
TR (1) TR19643A (fr)

Families Citing this family (55)

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AT380179B (de) * 1978-07-31 1986-04-25 Akzo Nv Verfahren zur herstellung einer membran mit poroeser struktur in form eines hohlfadens
DE2916581C2 (de) * 1979-04-24 1982-09-23 Akzo Gmbh, 5600 Wuppertal Ummantelung für elektrische Leiter und Wellenleiter
CA1202837A (fr) * 1980-03-14 1986-04-08 Wolfgang J. Wrasidlo Membranes asymetriques, leur fabrication et leur emploi
JPS56159128A (en) * 1980-05-15 1981-12-08 Asahi Chem Ind Co Ltd Thermoplastic resin porous film and production thereof
DE3026688C2 (de) * 1980-07-15 1986-02-20 Akzo Gmbh, 5600 Wuppertal Verfahren zur Herstellung von pulverförmigen, porösen Polymerteilchen
DE3026762C2 (de) * 1980-07-15 1985-04-25 Akzo Gmbh, 5600 Wuppertal Verfahren zum Herstellen von porösem, pulverförmigem Polypropylen und Verwendung der Verfahrensprodukte
DE3049557A1 (de) 1980-12-31 1982-07-29 Akzo Gmbh, 5600 Wuppertal Poroese schlaeuche
DE3049558A1 (de) * 1980-12-31 1982-07-29 Akzo Gmbh, 5600 Wuppertal Unterirdische bewaesserung oder traenkung von boeden
NZ199916A (en) * 1981-03-11 1985-07-12 Unilever Plc Low density polymeric block material for use as carrier for included liquids
CA1196620A (fr) * 1981-06-26 1985-11-12 Donald Barby Substrat porteur de polymere poreux
DE3129064A1 (de) * 1981-07-23 1983-02-10 Akzo Gmbh, 5600 Wuppertal Verfahren und vorrichtung zur blutoxygenation
JPS5829839A (ja) * 1981-08-13 1983-02-22 Mitsubishi Plastics Ind Ltd 微孔性多孔膜の製法
DE3205289C2 (de) * 1982-02-15 1984-10-31 Akzo Gmbh, 5600 Wuppertal Verfahren zur Herstellung von porösen Körpern mit einstellbarem Gesamtporenvolumen, einstellbarer Porengröße und einstellbarer Porenwandung
DE3214667C2 (de) * 1982-04-21 1985-07-18 Akzo Gmbh, 5600 Wuppertal Zusammengesetzter Körper für die Langzeitabgabe von Wirkstoffen
DE3215211A1 (de) * 1982-04-23 1983-10-27 Akzo Gmbh Mikroporoese mit wirkstoffen beladene pulver
JPS5931701A (ja) * 1982-08-16 1984-02-20 Nitto Electric Ind Co Ltd 液状活性物質含有膜及びその製造方法
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DE3304951A1 (de) * 1983-02-12 1984-08-16 Akzo Gmbh, 5600 Wuppertal Vorrichtung zum filtern einer fluessigkeit
DE3327638C2 (de) * 1983-07-30 1986-08-07 Akzo Gmbh, 5600 Wuppertal Verfahren und Vorrichtung zur Herstellung Poren aufweisender Formkörper
EP0133882B1 (fr) * 1983-07-30 1990-04-04 Akzo Patente GmbH Corps poreux
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DE3829766A1 (de) * 1988-09-01 1990-03-22 Akzo Gmbh Verfahren zur herstellung von membranen
GB8916776D0 (en) * 1989-07-21 1989-09-06 Wilson Robert W Slow release chemicals
CH685878A5 (de) * 1993-12-08 1995-10-31 Brugg Ag Kabelwerke Verfahren zur Herstellung eines additivbeladenen poroesen Traegermaterials
EP0816405A3 (fr) * 1994-09-01 1998-07-08 Bridgestone Corporation Structure polymère réticulée et procédé par sa fabrication
US5571415A (en) * 1994-11-02 1996-11-05 Rohm And Haas Company Method for preparing porous polymer structures
DE19700760C2 (de) * 1997-01-11 2000-11-09 Microdyn Modulbau Gmbh & Co Kg Verfahren zur Herstellung von porösen Formkörpern aus thermoplastischen Polymeren, poröse Formkörper und Verwendung der Formkörper
CN1105545C (zh) 1997-01-31 2003-04-16 花王株式会社 用去污剂浸渗的清洁用品
BR9811287A (pt) * 1997-07-23 2000-08-29 Akzo Nobel Nv Processo para a preparação de uma membrana hidrófoba, membrana hidrófoba, e, utilização da membrana
DE19751031A1 (de) 1997-11-19 1999-06-24 Ingo Dipl Ing Heschel Verfahren zur Herstellung poröser Strukturen
WO2000043114A1 (fr) * 1999-01-21 2000-07-27 Membrana Gmbh Membrane polyolefinique integralement asymetrique
CN1136035C (zh) * 1999-01-22 2004-01-28 制膜有限公司 整体不对称聚烯烃膜的生产方法
CA2324677A1 (fr) 2000-10-26 2002-04-26 James F. Stewart Additif agrochimique
US7247602B2 (en) 2000-10-26 2007-07-24 Adjuvants Plus Inc. Agrochemical formulation aid composition and uses thereof
ATE337080T1 (de) 2002-01-24 2006-09-15 Membrana Gmbh Verfahren zur herstellung von polyolefinmembranen mit integral asymmetrischer struktur
DE10220038A1 (de) 2002-05-04 2003-11-20 Membrana Gmbh Verfahren zur Herstellung geschäumter Polymerformkörper und geschäumter Polymerformkörper
JP4016712B2 (ja) * 2002-05-13 2007-12-05 株式会社ジーエス・ユアサコーポレーション リチウムイオン導電性ポリマー電解質およびそれを用いたポリマー電解質電池
JP5414020B2 (ja) * 2007-06-22 2014-02-12 国立大学法人大阪大学 （メタ）アクリル酸エステル系ポリマーを液体に溶解する方法
US9062022B2 (en) 2008-12-04 2015-06-23 The University Of Akron Polymer composition and dialysis membrane formed from the polymer composition
EP2196254B1 (fr) 2008-12-12 2011-10-12 Membrana GmbH Membrane PVDF hydrophobe résistant à l'ozone et ayant une stabilité mécanique élevée
CN103930475A (zh) * 2011-11-08 2014-07-16 株式会社钟化 氯乙烯系共聚物多孔质体及其制造方法
US10946345B2 (en) 2013-05-29 2021-03-16 Em Innovative Properties Company Microporous polyvinylidene fluoride membrane
EP3618943A1 (fr) 2014-11-03 2020-03-11 3M Innovative Properties Company Membrane plate hydrophobe à base de fluorure de polyvinylidène et procédé de fabrication de ladite membrane
WO2016081992A1 (fr) * 2014-11-25 2016-06-02 Deakin University Matériau absorbant
DE102016214304A1 (de) 2015-08-05 2017-02-09 Tesa Se Mikrozelluläre Emulsionsschäume
EP3421117A1 (fr) 2017-06-28 2019-01-02 3M Innovative Properties Company Membranes à feuille plate de polyamide à structure superficielle microporeuse pour la rétention de nanoparticules
GB201806245D0 (en) * 2018-04-17 2018-05-30 Nicoventures Trading Ltd Delivery vehicle
JP7639801B2 (ja) * 2022-10-12 2025-03-05 トヨタ自動車株式会社 樹脂多孔質体の製造方法

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Publication number Priority date Publication date Assignee Title
US3308073A (en) * 1962-04-09 1967-03-07 Phillips Petroleum Co Porous polyolefin objects
US3367891A (en) * 1965-12-15 1968-02-06 Koppers Co Inc Permeable foamed styrene polymer
DE1908516A1 (de) * 1968-02-23 1969-11-27 Hercules Inc Verfahren zur Herstellung eines poroesen Gebildes
FR2008791A1 (fr) * 1968-05-17 1970-01-23 Usm Corp
FR2152653A1 (fr) * 1971-09-13 1973-04-27 Bristol Myers Co
GB1345944A (en) * 1970-12-03 1974-02-06 Du Pont Foamed materials
FR2259130A1 (fr) * 1974-01-24 1975-08-22 Akzona Inc
FR2275304A1 (fr) * 1974-05-30 1976-01-16 Stamicarbon Structures poreuses de polymeres

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GB938694A (en) * 1959-06-02 1963-10-02 Electric Storage Battery Co Improvements relating to microporous thermoplastic resinous materials
US3378507A (en) * 1961-12-20 1968-04-16 Gen Electric Producing microporous polymers
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JPS5439867B2 (fr) * 1972-02-24 1979-11-30
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JPS4924267A (fr) * 1972-06-26 1974-03-04
JPS49108172A (fr) * 1973-02-17 1974-10-15
JPS5120561A (ja) * 1974-08-09 1976-02-18 Toyo Communication Equip Dosuruuhoorupurintohaisenbanno seizohoho

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3308073A (en) * 1962-04-09 1967-03-07 Phillips Petroleum Co Porous polyolefin objects
US3367891A (en) * 1965-12-15 1968-02-06 Koppers Co Inc Permeable foamed styrene polymer
DE1908516A1 (de) * 1968-02-23 1969-11-27 Hercules Inc Verfahren zur Herstellung eines poroesen Gebildes
US3607793A (en) * 1968-02-23 1971-09-21 Hercules Inc Process for forming porous structures
FR2008791A1 (fr) * 1968-05-17 1970-01-23 Usm Corp
GB1345944A (en) * 1970-12-03 1974-02-06 Du Pont Foamed materials
FR2152653A1 (fr) * 1971-09-13 1973-04-27 Bristol Myers Co
FR2259130A1 (fr) * 1974-01-24 1975-08-22 Akzona Inc
FR2275304A1 (fr) * 1974-05-30 1976-01-16 Stamicarbon Structures poreuses de polymeres

Also Published As

Publication number Publication date
PL111017B1 (en) 1980-08-30
SE441928B (sv) 1985-11-18
JPH0329815B2 (fr) 1991-04-25
ES471772A1 (es) 1979-10-16
PL200533A1 (pl) 1978-07-17
CH649565A5 (en) 1985-05-31
JPH03205435A (ja) 1991-09-06
AU2806377A (en) 1979-02-22
GR64881B (en) 1980-06-06
AU511101B2 (en) 1980-07-31
FI68639C (fi) 1985-10-10
AT375665B (de) 1984-08-27
IT1143677B (it) 1986-10-22
ATA627277A (de) 1984-01-15
BR7705790A (pt) 1978-06-13
NO151369C (no) 1985-03-27
NO772976L (no) 1978-03-01
DK337477A (da) 1978-03-01
NO151369B (no) 1984-12-17
DK171108B1 (da) 1996-06-10
DD140052A5 (de) 1980-02-06
GB1576228A (en) 1980-10-01
ES461970A1 (es) 1978-11-01
DE2737745C2 (de) 1984-03-22
SE7708653L (sv) 1978-03-01
FR2362890B1 (fr) 1985-04-12
CA1110811A (fr) 1981-10-20
DE2737745A1 (de) 1978-03-09
NL7709505A (nl) 1978-03-02
MX148613A (es) 1983-05-18
JPH0450339B2 (fr) 1992-08-14
TR19643A (tr) 1979-09-14
FI772552A7 (fi) 1978-03-01
FI68639B (fi) 1985-06-28
JPS5329367A (en) 1978-03-18
AR220685A1 (es) 1980-11-28

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