CH274528A - Procédé de préparation de polystyrènes à poids moléculaire relativement faible. - Google Patents

Procédé de préparation de polystyrènes à poids moléculaire relativement faible.

Info

Publication number
CH274528A
CH274528A CH274528DA CH274528A CH 274528 A CH274528 A CH 274528A CH 274528D A CH274528D A CH 274528DA CH 274528 A CH274528 A CH 274528A
Authority
CH
Switzerland
Prior art keywords
preparation
molecular weight
relatively low
low molecular
weight polystyrenes
Prior art date
Application number
Other languages
English (en)
Inventor
Limited Lewis Berger Sons
Ernest Wakeford Leslie
Armitage Frank
Original Assignee
Lewis Berger & Sons Limited
Ernest Wakeford Leslie
Armitage Frank
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 Lewis Berger & Sons Limited, Ernest Wakeford Leslie, Armitage Frank filed Critical Lewis Berger & Sons Limited
Publication of CH274528A publication Critical patent/CH274528A/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F12/00—Homopolymers and 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 an aromatic carbocyclic ring
    • C08F12/02—Monomers containing only one unsaturated aliphatic radical
    • C08F12/04—Monomers containing only one unsaturated aliphatic radical containing one ring
    • C08F12/06—Hydrocarbons
    • C08F12/08—Styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F16/00—Homopolymers and 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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical
    • C08F16/12—Homopolymers and 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 an alcohol, ether, aldehydo, ketonic, acetal or ketal radical by an ether radical
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F212/00—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 an aromatic carbocyclic ring
    • C08F212/02—Monomers containing only one unsaturated aliphatic radical
    • C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
    • C08F212/06—Hydrocarbons
    • C08F212/08—Styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
    • C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
    • C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
    • C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/46—Polyesters chemically modified by esterification
    • C08G63/48—Polyesters chemically modified by esterification by unsaturated higher fatty oils or their acids; by resin acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G67/00—Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing oxygen or oxygen and carbon, not provided for in groups C08G2/00 - C08G65/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D125/00—Coating compositions based on 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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C09D125/04—Homopolymers or copolymers of styrene
    • C09D125/08—Copolymers of styrene
    • C09D125/14—Copolymers of styrene with unsaturated esters
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/02—Obtaining noble metals by dry processes
    • C22B11/021—Recovery of noble metals from waste materials
    • C22B11/026—Recovery of noble metals from waste materials from spent catalysts
    • C22B11/028—Recovery of noble metals from waste materials from spent catalysts using solid sorbents, e.g. getters or catchment gauzes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Paints Or Removers (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)
  • Macromonomer-Based Addition Polymer (AREA)
  • Graft Or Block Polymers (AREA)
CH274528D 1942-07-28 1947-12-27 Procédé de préparation de polystyrènes à poids moléculaire relativement faible. CH274528A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1053842A GB573809A (en) 1942-07-28 1942-07-28 Improvements in or relating to the manufacture of interpolymers of aromatic vinyl hydrocarbons with other polymerisable organic compounds and of coating compositions obtained therefrom
GB2157544A GB580911A (en) 1942-07-28 1944-11-03 Improvements in or relating to the manufacture of polystyrene

Publications (1)

Publication Number Publication Date
CH274528A true CH274528A (fr) 1951-04-15

Family

ID=39591926

Family Applications (3)

Application Number Title Priority Date Filing Date
CH277312D CH277312A (fr) 1942-07-28 1947-12-26 Procédé de préparation d'interpolymères du styrène avec des esters mixtes de polyalcool.
CH274528D CH274528A (fr) 1942-07-28 1947-12-27 Procédé de préparation de polystyrènes à poids moléculaire relativement faible.
CH277313D CH277313A (fr) 1942-07-28 1947-12-27 Procédé de préparation d'interpolymères du styrène avec des esters mixtes de polyalcool.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH277312D CH277312A (fr) 1942-07-28 1947-12-26 Procédé de préparation d'interpolymères du styrène avec des esters mixtes de polyalcool.

Family Applications After (1)

Application Number Title Priority Date Filing Date
CH277313D CH277313A (fr) 1942-07-28 1947-12-27 Procédé de préparation d'interpolymères du styrène avec des esters mixtes de polyalcool.

Country Status (7)

Country Link
US (2) US2392710A (fr)
BE (5) BE478542A (fr)
CH (3) CH277312A (fr)
DE (7) DE1004527B (fr)
FR (5) FR952472A (fr)
GB (5) GB573809A (fr)
NL (2) NL66445C (fr)

Families Citing this family (71)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724704A (en) * 1955-11-22 Alkyd-silicone coaung
BE478541A (fr) * 1942-07-28 1900-01-01
US2482086A (en) * 1944-04-01 1949-09-20 Westinghouse Electric Corp Resinous compositions and use thereof in forming electrical members and laminated products
NL66801C (fr) * 1944-11-03
NL69494C (fr) * 1945-03-30
US2457769A (en) * 1945-08-30 1948-12-28 Sherwin Williams Co Resinous esters of polyhydric alcohols with polymers of styrene and resin acids and method for preparation thereof
US2570385A (en) * 1946-01-28 1951-10-09 Montclair Res Corp Addition products of esters comprising a polyhydric alcohol esterified with drying oil acids and an alkenol-dicarboxylic acid monoester and process of making same
FR959023A (fr) * 1946-02-15 1950-03-23
BE479273A (fr) * 1946-02-15
US2484215A (en) * 1946-08-30 1949-10-11 Westinghouse Electric Corp Synthetic resin compositions
FR959026A (fr) * 1946-11-12 1950-03-23
US2560592A (en) * 1946-12-04 1951-07-17 Interchem Corp Alkyd resin
FR959027A (fr) * 1946-12-06 1950-03-23
US2655488A (en) * 1947-06-02 1953-10-13 Arco Company Interpolymer of vinylaromatic compound and conjugated oil fatty acid
US2495458A (en) * 1947-06-02 1950-01-24 Arco Company Interpolymer produced from polyhydric alcohol, polybasic acid, and interpolymer of vinylaromatic compound with drying oil or acid
US2580289A (en) * 1947-06-20 1951-12-25 Monsanto Chemicals Styrenated alkyd-melamine sulfonamide ether resins
US2468747A (en) * 1947-06-25 1949-05-03 Dow Chemical Co Interpolymers of drying oils, monoalkenyl-aromatic hydrocarbons, and divinylbenzene
US2559465A (en) * 1947-09-24 1951-07-03 Ellis Foster Co Soluble copolymers of polymerizable monomers and drying oil acids-unsaturated dicarboxylic acid-polyhydric alcohol esters and process of making them
GB638835A (en) * 1947-10-22 1950-06-14 Beck Koller And Company Englan Improvements in or relating to the manufacture of emulsions
US2713039A (en) * 1948-06-22 1955-07-12 American Cyanamid Co Modified alkyd resins and process of preparing same
US2647092A (en) * 1948-08-05 1953-07-28 Reichhold Chemicals Inc Styrene modified alkyds and process of producing the same
US2559466A (en) * 1948-09-17 1951-07-03 Ellis Foster Co Acid-modified copolymers of drying oil acids, maleic-polyhydric alcohol esters, and process of making same
US2598645A (en) * 1948-09-29 1952-05-27 Monsanto Chemicals Styrenated-unsaturated oil modified alkyd, drying oil, and a phenol-styrene oxide resin coating composition
US2598644A (en) * 1948-09-29 1952-05-27 Monsanto Chemicals Styrenated oil, styrene oxidephenol resin, drying oil coating composition
US2617776A (en) * 1948-10-25 1952-11-11 Monsanto Chemicals Coating compositions
GB654031A (en) * 1948-10-28 1951-05-30 Lewis Berger & Sons Ltd Improvements in or relating to the manufacture of interpolymers of styrene with unsaturated fatty acids and polyhydric alcoholic esters thereof
US2606161A (en) * 1948-11-24 1952-08-05 Monsanto Chemicals Styrene-alkyd resin copolymer
US2610161A (en) * 1949-01-08 1952-09-09 Union Oil Co Modified drying oils
US2551353A (en) * 1949-03-18 1951-05-01 Us Rubber Co Interpolymers of castor-oil maleate
US2602071A (en) * 1949-03-23 1952-07-01 Geo D Wetherill Varnish Co Inc Copolymerization of vinyl monomers with fatty oils, fatty acids, resins and the like
US2639270A (en) * 1949-04-28 1953-05-19 Dow Chemical Co Styrene modified alkyd resins
US2639271A (en) * 1949-04-28 1953-05-19 Dow Chemical Co Styrene, alpha methyl styrene, drying oil modified alkyd resins
US2589655A (en) * 1949-08-05 1952-03-18 Sherwin Williams Co Interpolymers and method of making same
US2627509A (en) * 1949-08-26 1953-02-03 Sherwin Williams Co Vinyl copolymers and process
DE899863C (de) * 1949-08-26 1953-12-17 Kurt Herbert & Co Vorm Otto Lo Verfahren zur Herstellung von Mischpolymerisaten
DE862958C (de) * 1949-11-25 1953-01-15 Bayer Ag Verfahren zur Herstellung von Polymerisaten aromatischer Vinylverbindungen
NL79598C (fr) * 1950-02-16
DE974381C (de) * 1950-02-16 1960-12-22 Bayer Ag Verfahren zur Herstellung von Polymerisationsprodukten
US2686765A (en) * 1950-02-21 1954-08-17 Sherwin Williams Co Oleoresinous varnishes containing fatty acid radicals copolymerized with monovinyl compound in presence of compound containing at least one but not more than two hemiquinoid groups
US2600457A (en) * 1950-02-28 1952-06-17 Union Carbide & Carbon Corp Copolymers of fatty oil modified polyesters and vinyl monomers
US2626250A (en) * 1950-05-13 1953-01-20 American Cyanamid Co Surface coating composition and process for preparing the same
DE889666C (de) * 1950-05-27 1953-09-14 Bayer Ag Verfahren zur Herstellung von Lackrohstoffen
GB698621A (en) * 1950-08-04 1953-10-21 Ici Ltd Improvements in or relating to interpolymers of vinyl aromatic hydrocarbons and drying oils
BE506351A (fr) * 1950-10-13
US2616863A (en) * 1950-10-28 1952-11-04 Universal Oil Prod Co Drying oil composition
NL75341C (fr) * 1951-04-26
US2676159A (en) * 1951-05-22 1954-04-20 Armitage Frank Process using activated silicate clay in styrene-alkyd reaction
DE974491C (de) * 1951-06-30 1961-01-12 Bayer Ag Verfahren zur Herstellung von Lackrohstoffen
DE973901C (de) * 1951-07-01 1960-07-14 Burkhard Carlsohn Verfahren zur Herstellung von Mischpolymerisaten aus Styrol und Leinoel
DE977088C (de) * 1951-07-02 1965-01-28 Burkhard Carlsohn Verfahren zur Herstellung von Polymerisationsprodukten
US2665284A (en) * 1951-09-26 1954-01-05 Interchem Corp Copolymers
US2665283A (en) * 1951-09-26 1954-01-05 Interchem Corp Copolymers
US2749320A (en) * 1952-01-08 1956-06-05 Sherwin Williams Co Short oil styrenated alkyd and method
DE929448C (de) * 1952-02-22 1955-06-27 Glasurit Werke Winkelmann Verfahren zur Herstellung von Mischpolymerisaten aus einem Vinyl-monomeren der Styrolreihe und trocknenden oder halbtrocknenden OElen
US2748092A (en) * 1952-03-04 1956-05-29 American Cyanamid Co Modified alkyd resin and process of preparing same
DE1045867B (de) * 1952-03-29 1958-12-04 Basf Ag Verfahren zum Herstellen von mit einer Unterlage fest verbundenen duennen Schichten aus polymerisierbaren Mischungen ungesaettigter Polyester und monomerer AEthylenderivate
US2983695A (en) * 1954-09-14 1961-05-09 Pechiney Prod Chimiques Sa Modified polyester resins derived from (1) ethylenically unsaturated aliphatic dicarboxylic acids and polyhydric alcohols esterified with at least one substantially purefatty acid of 6 to 12 carbon atoms and then (2) crosslinked with a vinyl monomer
US2884398A (en) * 1956-04-10 1959-04-28 Union Carbide Corp Composition comprising unsaturated polyester, vinyl monomer and cyclic terpene, cured product thereof and process of preparing the cured product
US2950988A (en) * 1956-10-09 1960-08-30 Congoleum Nairn Inc Method of producing printed surface covering and printing enamel therefor
DE1169667B (de) * 1961-05-23 1964-05-06 Huels Chemische Werke Ag Verfahren zur Herstellung von Misch-polymerisaten durch Polymerisation von Styrol mit Polyestern
US3236818A (en) * 1961-06-12 1966-02-22 Du Pont Terpolymers of vinylidene chloride, a mono-olefinic material and a terpene
NL282084A (fr) * 1961-08-15
US3160619A (en) * 1961-11-03 1964-12-08 Monsanto Co Molecular weight regulation in polymerization of vinylidene monomers using eugenol as regulator
US3160616A (en) * 1961-11-03 1964-12-08 Monsanto Co Molecular weight regulation in polymerization of vinylidene monomers using isopulegol as regulator
US3380972A (en) * 1961-12-28 1968-04-30 Monsanto Co Polymerization process
US3541186A (en) * 1968-01-02 1970-11-17 Monsanto Co Process for polymerizing nitrile monomers with alpha olefins in the presence of a terpene
US3919181A (en) * 1973-10-11 1975-11-11 Schenectady Chemical Preparation of hydrocarbon resins using zirconium tetrachloride
US4072811A (en) * 1974-10-17 1978-02-07 Akzona Incorporated Novel chlorinated dicumene initiators
WO1982002387A1 (fr) * 1981-01-09 1982-07-22 & Son Inc S C Johnson Procede de copolymerisation en vrac continue de monomeres vyniliques et produit obtenu par ce procede
US4414370A (en) * 1981-01-09 1983-11-08 S. C. Johnson & Son, Inc. Process for continuous bulk copolymerization of vinyl monomers
FR2944650B1 (fr) 2009-04-15 2012-10-05 Imra Europ Sas Antenne multi-services a bande ultralarge.

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US1910846A (en) * 1926-05-03 1933-05-23 Naugatuck Chem Co Polymerization of erythrene and its homologues
DE563202C (de) * 1929-08-11 1932-11-10 I G Farbenindustrie Akt Ges Verfahren zur Herstellung hochmolekularer Produkte durch Polymerisation
US1975959A (en) * 1930-05-13 1934-10-09 Du Pont Polymerization of vinyl compounds in the presence of film forming materials
GB392924A (en) * 1931-10-14 1933-05-15 Du Pont Improvements in or relating to the polymerisation of vinyl derivatives and in coating compositions
DE580234C (de) * 1932-01-22 1933-07-07 I G Farbenindustrie Akt Ges Verfahren zur Herstellung von technisch wertvollen Produkten aus Umwandlungsprodukten von trocknenden oder halbtrocknenden OElen
US2195362A (en) * 1936-05-21 1940-03-26 Ellis Foster Co Glycol-maleic acid resin and process of making same
US2255313A (en) * 1937-08-06 1941-09-09 Ellis Foster Co Ethylenic-alpha-beta synthetic resins and process of making same
US2225534A (en) * 1939-07-18 1940-12-17 Du Pont Copolymers of styrene with frosting drying oil varnishfs
GB545324A (en) * 1940-10-18 1942-05-20 Du Pont Interpolymers of styrene with heat-blended oil varnishes
GB541938A (en) * 1940-06-17 1941-12-18 Harold Samuel Lilley Improvements in or relating to varnish compositions
US2313728A (en) * 1941-10-06 1943-03-16 Du Pont Tanning
US2383084A (en) * 1942-04-06 1945-08-21 Hercules Powder Co Ltd Terpene resins
BE478541A (fr) * 1942-07-28 1900-01-01

Also Published As

Publication number Publication date
US2392710A (en) 1946-01-08
DE1008621B (de) 1967-05-16
GB573835A (en) 1945-12-07
FR952472A (fr) 1949-11-17
BE475703A (fr) 1900-01-01
FR968034A (fr) 1950-11-17
DE975352C (de) 1961-11-09
DE1004527B (de) 1957-03-14
US2556488A (en) 1951-06-12
CH277312A (fr) 1951-08-31
CH277313A (fr) 1951-08-31
NL75085C (fr) 1900-01-01
BE478539A (fr) 1900-01-01
GB605929A (en) 1948-08-03
NL66445C (fr) 1900-01-01
BE478541A (fr) 1900-01-01
BE478542A (fr) 1900-01-01
FR957656A (fr) 1950-02-23
FR961844A (fr) 1950-05-23
DE1008622B (de) 1957-05-16
GB573809A (en) 1945-12-07
FR957253A (fr) 1950-02-17
GB580911A (en) 1946-09-24
GB580912A (en) 1946-09-24
DE844351C (de) 1952-07-21
BE478540A (fr) 1900-01-01
DE951770C (de) 1956-10-31
DE967903C (de) 1957-12-27

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