FR1016001A - Produits à base de polytétrafluoroéthylène et leurs procédés de fabrication - Google Patents

Produits à base de polytétrafluoroéthylène et leurs procédés de fabrication

Info

Publication number
FR1016001A
FR1016001A FR1016001DA FR1016001A FR 1016001 A FR1016001 A FR 1016001A FR 1016001D A FR1016001D A FR 1016001DA FR 1016001 A FR1016001 A FR 1016001A
Authority
FR
France
Prior art keywords
polytetrafluoroethylene
manufacturing processes
based products
products
processes
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.)
Expired
Application number
Other languages
English (en)
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of FR1016001A publication Critical patent/FR1016001A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
    • H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
    • H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
    • H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/20—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wires
    • 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
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
    • C03C25/10—Coating
    • C03C25/24—Coatings containing organic materials
    • C03C25/26—Macromolecular compounds or prepolymers
    • C03C25/28—Macromolecular compounds or prepolymers obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C03C25/30—Polyolefins
    • C03C25/305—Polyfluoroolefins
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B26/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing halogen
    • 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
    • C09D127/00—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 a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—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 a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C09D127/18—Homopolymers or copolymers of tetrafluoroethene
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
    • H01B3/082—Wires with glass or glass wool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
    • B05D2401/20—Aqueous dispersion or solution
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2506/00—Halogenated polymers
    • B05D2506/10—Fluorinated polymers
    • B05D2506/15—Polytetrafluoroethylene [PTFE]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/03—Polytetrafluoroethylene, i.e. PTFE
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/4971—Nonmetallic bearing element
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/3154—Of fluorinated addition polymer from unsaturated monomers
    • Y10T428/31544—Addition polymer is perhalogenated
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2475—Coating or impregnation is electrical insulation-providing, -improving, or -increasing, or conductivity-reducing
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2926—Coated or impregnated inorganic fiber fabric
    • Y10T442/2992—Coated or impregnated glass fiber fabric

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Engineering (AREA)
  • Wood Science & Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Structural Engineering (AREA)
  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)
FR1016001D 1949-04-09 1950-04-05 Produits à base de polytétrafluoroéthylène et leurs procédés de fabrication Expired FR1016001A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86606A US2539329A (en) 1949-04-09 1949-04-09 Process of coating an inorganic fabric with polytetrafluoroethylene and product resulting therefrom

Publications (1)

Publication Number Publication Date
FR1016001A true FR1016001A (fr) 1952-10-30

Family

ID=22199686

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1016001D Expired FR1016001A (fr) 1949-04-09 1950-04-05 Produits à base de polytétrafluoroéthylène et leurs procédés de fabrication

Country Status (4)

Country Link
US (1) US2539329A (fr)
BE (1) BE495038A (fr)
DE (1) DE840073C (fr)
FR (1) FR1016001A (fr)

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* Cited by examiner, † Cited by third party
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US2731068A (en) * 1950-09-23 1956-01-17 Du Pont Tetrafluoroethylene polymer bonded heat-resistant fabric
US2712509A (en) * 1951-08-17 1955-07-05 Owens Corning Fiberglass Corp Glass fiber filament strand and method of manufacturing glass fabric
BE516978A (fr) * 1952-01-24 1900-01-01
US2704105A (en) * 1952-04-03 1955-03-15 Sprague Electric Co Dielectric materials
US2765241A (en) * 1952-06-05 1956-10-02 Du Pont Polytetrafluoroethylene films and coated fabrics with pressure sensitive adhesive onone side thereof and method of making
US2778758A (en) * 1952-07-28 1957-01-22 Bjorksten Res Lab Inc Glass laminate, article and method
US2736680A (en) * 1953-04-07 1956-02-28 Connecticut Hard Rubber Co Lamination of fluorocarbons such as polytrifluorochloroethylene with other materials
GB751645A (en) * 1953-04-10 1956-07-04 Du Pont Concentration of aqueous colloidal dispersions of polytetrafluoroethylene
US2774704A (en) * 1953-11-27 1956-12-18 Kellogg M W Co Lamination of halogenated olefin polymers
US2774702A (en) * 1953-12-17 1956-12-18 Kellogg M W Co Lamination of perfluorochloroolefins and polyacrylonitrile
US2882083A (en) * 1954-04-30 1959-04-14 Johns Manville Spirally wound gasket
US2902305A (en) * 1954-07-22 1959-09-01 Johns Manville Gaskets and method of making the same
US2888042A (en) * 1955-01-14 1959-05-26 Resistoflex Corp Reinforced polytetrafluoroethylene pipe and method of making it
US2907677A (en) * 1956-09-10 1959-10-06 Du Pont Article of manufacture and process of making same
US2930106A (en) * 1957-03-14 1960-03-29 American Felt Co Gaskets
US2989433A (en) * 1957-06-18 1961-06-20 Du Pont Process of preparing laminated structures
US2998991A (en) * 1957-10-25 1961-09-05 Harvey G Spencer Sealing rings
US2908537A (en) * 1958-02-11 1959-10-13 Aluminum Co Of America Piston ring
US3082485A (en) * 1958-04-07 1963-03-26 American Metal Prod Elements having low friction material compacted on teh face thereof
US3059318A (en) * 1958-09-11 1962-10-23 Hoechst Ag Method of making a bearing insert for ball joints
US3108897A (en) * 1960-05-26 1963-10-29 United Merchants & Mfg Process for coloring glass fabrics
US3147983A (en) * 1960-06-03 1964-09-08 Northern Ordnance Inc Shaft and piston seal
NL267988A (fr) * 1960-08-15 1900-01-01
US3186897A (en) * 1962-07-17 1965-06-01 Du Pont Sheet of autogenously bonded polytetrafluoroethylene fibers and method of producing same
US3341211A (en) * 1963-04-01 1967-09-12 Garlock Inc Packing rings and method of making them
US3248515A (en) * 1965-04-01 1966-04-26 Union Carbide Corp Welding wire feeding systems
US3653949A (en) * 1969-09-05 1972-04-04 Owens Corning Fiberglass Corp Coated fabrics and methods for applying coatings thereto
US3790403A (en) * 1972-01-13 1974-02-05 Du Pont Glass fabric coated with crack-free fluorocarbon resin coating and process for preparing
US3928703A (en) * 1972-05-23 1975-12-23 Chem Fab Corp Process for coating a substrate with a fluorinated organic polymer and product thereof
DE2654644A1 (de) * 1976-12-02 1978-06-08 Glyco Metall Werke Schichtwerkstoff zur herstellung von gleitlagerelementen und verfahren zu seiner herstellung
US4401845A (en) * 1981-08-26 1983-08-30 Pennwalt Corporation Low smoke and flame spread cable construction
DE3533807A1 (de) * 1985-09-21 1987-03-26 Hoechst Ag Waessrige, pastoese ueberzugszusammensetzung und ihre verwendung
JPS62189153A (ja) * 1985-10-07 1987-08-18 株式会社クラレ 防水布およびその製造法
US5384181B1 (en) * 1987-02-17 2000-06-13 World Properties Inc Low volume fraction ceramic filled fluoropolymeric composite material
US5207248A (en) * 1987-07-14 1993-05-04 Hitachi Cable, Ltd. Pipe coated with a resin layer on the inner surface thereof
US4816330A (en) * 1987-08-26 1989-03-28 Freund Paul X Chemical resistant laminated garment material
CA1298770C (fr) * 1987-12-18 1992-04-14 Craig S. Mcewen Stratifie a faible constante dielectrique de fluoropolymere et de polymere d'amide aromatique
US4895752A (en) * 1987-12-18 1990-01-23 E. I. Du Pont De Nemours And Company Low dielectric constant laminate of fluoropolymer and polyaramid
EP0487200B1 (fr) * 1990-11-14 2000-06-21 Titeflex Corporation Stratifié à base de fluoropolymère et aluminium
US5274196A (en) * 1992-05-04 1993-12-28 Martin Weinberg Fiberglass cloth resin tape insulation
IT241660Y1 (it) * 1996-07-04 2001-05-17 Davide Rivi Perfezionamento alle piastre magnetiche di ancoraggio di stampi
US6574090B2 (en) 1998-11-05 2003-06-03 International Business Machines Corporatiion Printed circuit board capacitor structure and method
US6215649B1 (en) * 1998-11-05 2001-04-10 International Business Machines Corporation Printed circuit board capacitor structure and method
US6291011B1 (en) 1999-11-16 2001-09-18 Johns Manville International, Inc. Design effect fiberglass wallcoverings
DE10147303B4 (de) * 2001-09-26 2007-02-22 Federal-Mogul Wiesbaden Gmbh & Co. Kg Verfahren zur Herstellung von Lagermaterialien und Verwendung der Lagermaterialien
DE10147302B4 (de) * 2001-09-26 2007-02-22 Federal-Mogul Wiesbaden Gmbh & Co. Kg Verfahren zur Herstellung von Lagermaterialien und Verwendung der Lagermaterialien
DE10148715B4 (de) * 2001-10-02 2007-10-25 Carl Freudenberg Kg Radialwellendichtung und Verfahren zu ihrer Herstellung
US9747355B2 (en) * 2012-06-08 2017-08-29 Rockbestos Surprenant Cable Corp. Method of making a high-temperature cable having a fiber-reinforced rein layer
KR101406161B1 (ko) * 2013-06-27 2014-06-12 국방과학연구소 복합재료 베어링 부품 제조 방법
DE102014215816A1 (de) * 2014-08-08 2016-02-11 Leoni Kabel Holding Gmbh Kabel sowie Verfahren zur Herstellung eines Kabels
JP6275200B2 (ja) * 2016-06-16 2018-02-07 日本化薬株式会社 高周波回路に適した両面回路用基板
CN106751711B (zh) 2017-01-18 2020-10-09 腾辉电子（苏州）有限公司 氟取代乙烯基聚合物树脂组合物、半固化片及层压板

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US2307783A (en) * 1939-05-24 1943-01-12 Eastman Kodak Co Method of coating
US2335930A (en) * 1939-12-28 1943-12-07 Anaconda Wire & Cable Co Coating wire
GB546716A (en) * 1941-01-25 1942-07-28 John Heron Mcgill Production of improved coatings on fabric supports
US2416721A (en) * 1941-05-14 1947-03-04 Upson Co Apparatus and process for making resinous artificial board
US2416232A (en) * 1943-04-03 1947-02-18 United Gas Improvement Co Coated organic material and method of making the same
US2396629A (en) * 1944-03-29 1946-03-19 Du Pont Fabrication of polytetrafluoroethylene articles
US2448952A (en) * 1945-07-26 1948-09-07 Du Pont Method for obtaining dispersions of polytetrafluoroethylene-ethylene copolymers

Also Published As

Publication number Publication date
BE495038A (fr) 1900-01-01
DE840073C (de) 1952-07-10
US2539329A (en) 1951-01-23

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