GB1001982A - Improvements relating to semi-conductor components - Google Patents

Improvements relating to semi-conductor components

Info

Publication number
GB1001982A
GB1001982A GB6471/63A GB647163A GB1001982A GB 1001982 A GB1001982 A GB 1001982A GB 6471/63 A GB6471/63 A GB 6471/63A GB 647163 A GB647163 A GB 647163A GB 1001982 A GB1001982 A GB 1001982A
Authority
GB
United Kingdom
Prior art keywords
wax
parts
copolymer
carbon
weight
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
GB6471/63A
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
Priority claimed from US17424362 external-priority patent/US3178384A/en
Priority claimed from US174244A external-priority patent/US3155631A/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1001982A publication Critical patent/GB1001982A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0869—Acids or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06—Waxes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06—Waxes
    • C08L91/08—Mineral waxes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/20—Conductive material dispersed in non-conductive organic material
    • H01B1/24—Conductive material dispersed in non-conductive organic material the conductive material comprising carbon-silicon compounds, carbon or silicon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/027—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of semi-conducting layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Conductive Materials (AREA)
  • Insulated Conductors (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Semi-conductive compositions comprise 75 to 40 parts by weight of a petroleum wax, 25 to 60 parts by weight of a copolymer of 60 to 85 weight per cent ethylene with vinyl acetate or ethyl acrylate and 5 to 40 parts by weight per 100 parts of petroleum wax and copolymer of dispersed conductive carbon. The wax may be a paraffin or microcrystalline wax. The carbon may be acetylene black or oil furnace black. Preferably, the copolymer and wax are blended and the carbon dispersed in the blend, or the copolymer and carbon are added to the molten wax. The compositions may be melt coated on glass cloth to provide semi-conductive tapes, or melt-coated on to electrical conductors before application of an insulating material to prevent corona discharge in high voltage cables.ALSO:Semi-conductive compositions comprise 25 to 60 parts by weight of a copolymer of 60 to 85% by weight of ethylene with vinyl acetate or ethyl acrylate, 75 to 40 parts by weight of a petroleum wax and 5 to 40 parts by weight per 100 parts of wax and copolymer of dispersed conductive carbon. The wax may be a paraffin wax or a microcrystalline wax. The carbon black may be an acetylene black or oil furnace black. Preferably, the copolymer and wax are blended and the carbon subsequently dispersed in the blend, or the copolymer and carbon are added with agitation to the molten wax. The compositions may be melt-coated on glass cloth to provide semi-conductive tapes, or meltcoated on to electrical conductors before application of an insulating material to prevent corona discharge in high voltage cables.ALSO:Semi-conductive tapes may be prepared by coating glass cloth with semi-conductive compositions comprising 25-60 parts by weight of a copolymer of 60-85 weight per cent ethylene with vinyl acetate or ethyl acrylate, 75-40 parts by weight of a petroleum wax and 5-40 parts by weight per 100 parts of copolymer and wax of dispersed conductive carbon. The wax may be paraffin or microcrystalline wax. The carbon may be acetylene black or oil furnace black. In examples, compositions are melt coated on glass cloths using a trailing blade coater, to give tapes which may be used for wrapping electrical conductors prior to the application of conventional insulating material.
GB6471/63A 1962-02-19 1963-02-18 Improvements relating to semi-conductor components Expired GB1001982A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US17424362 US3178384A (en) 1962-02-19 1962-02-19 Semi-conductive fabric comprising an ethylene-vinyl acetate copolymer, wax and carbon black
US174244A US3155631A (en) 1962-02-19 1962-02-19 Semi-conductor, containing ethylene/ethyl acrylate copolymer, petroleum wax and carbon black

Publications (1)

Publication Number Publication Date
GB1001982A true GB1001982A (en) 1965-08-18

Family

ID=26870031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6471/63A Expired GB1001982A (en) 1962-02-19 1963-02-18 Improvements relating to semi-conductor components

Country Status (4)

Country Link
JP (1) JPS3914510B1 (en)
DE (1) DE1519283B1 (en)
GB (1) GB1001982A (en)
NL (2) NL136864C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072536A1 (en) * 1981-08-13 1983-02-23 The Dow Chemical Company Foamable electroconductive polyolefin resin compositions
FR2742276A1 (en) * 1995-12-08 1997-06-13 Gen Electric METHOD FOR GRADUALLY ISOLATING STATOR BARS, USING ELECTRICALLY CONDUCTIVE THERMOPLASTIC COATINGS, AND STATOR BARS OBTAINED ACCORDING TO THIS METHOD

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072536A1 (en) * 1981-08-13 1983-02-23 The Dow Chemical Company Foamable electroconductive polyolefin resin compositions
FR2742276A1 (en) * 1995-12-08 1997-06-13 Gen Electric METHOD FOR GRADUALLY ISOLATING STATOR BARS, USING ELECTRICALLY CONDUCTIVE THERMOPLASTIC COATINGS, AND STATOR BARS OBTAINED ACCORDING TO THIS METHOD

Also Published As

Publication number Publication date
DE1519283B1 (en) 1970-05-14
NL289132A (en)
JPS3914510B1 (en) 1964-07-23
NL136864C (en)

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