GB997496A - Electrical switchgear - Google Patents

Electrical switchgear

Info

Publication number
GB997496A
GB997496A GB1200263A GB1200263A GB997496A GB 997496 A GB997496 A GB 997496A GB 1200263 A GB1200263 A GB 1200263A GB 1200263 A GB1200263 A GB 1200263A GB 997496 A GB997496 A GB 997496A
Authority
GB
United Kingdom
Prior art keywords
epoxy
meal
rutile
mica
specified
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
GB1200263A
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.)
BASF Schweiz AG
Original Assignee
Ciba AG
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 Ciba AG filed Critical Ciba AG
Publication of GB997496A publication Critical patent/GB997496A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/20—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the epoxy compounds used
    • C08G59/22—Di-epoxy compounds
    • C08G59/24—Di-epoxy compounds carbocyclic
    • 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
    • H01B3/40—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 epoxy resins
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/72—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Organic Insulating Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Curable compositions which are used in the manufacture of insulating parts for electrical switchgear comprise a cycloaliphatic 1,2-epoxy compound having an epoxy equivalency greater than 1 and as curing agent an aliphatic or cycloaliphatic polycarboxylic acid anhydride. The epoxy compound may be an epoxidized hydrocarbon, ether, ester, polyester, acetal or telomer and many such polyepoxides are specified. Many suitable polycarboxylic acid anhydrides are specified. The mixtures may also contain catalysts, e.g. tertiary amines, their salts and quaternary ammonium compounds, alkali metal alcoholates such as the sodium salt of 2,4-dihydroxy - 3 - hydroxymethylpentane; fillers, e.g. rutile, mica, quartz meal, rock meal, e.g. rutile, mica, quartz meal, rock meal, alumina trihydrate, calcium carbonate, ground dolomite, gypsum or barium sulphate, and fibres or fabrics of glass, polyesters, nylon, polyacrylonitrile, silk or cotton; and reactive diluents such as vinylcyclohexene monoxide, 3,4-epoxy-tetrahydrodicyclopentadienol - 8, 3,4 - epoxy - hexahydrobenzal glycerol or 3,4 - epoxy - cyclohexane - 1,1 - dimethanol acrolein acetal. In the examples, a polyglycidyl ether of bisphenol A and phthalic anhydride are also used for the purposes of comparison.
GB1200263A 1962-03-28 1963-03-26 Electrical switchgear Expired GB997496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH372462A CH424887A (en) 1962-03-28 1962-03-28 Electrical switchgear

Publications (1)

Publication Number Publication Date
GB997496A true GB997496A (en) 1965-07-07

Family

ID=4262127

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1200263A Expired GB997496A (en) 1962-03-28 1963-03-26 Electrical switchgear

Country Status (6)

Country Link
AT (1) AT245091B (en)
BE (1) BE630192A (en)
CH (1) CH424887A (en)
ES (1) ES286502A1 (en)
GB (1) GB997496A (en)
SE (1) SE304780B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171255A (en) * 1985-02-15 1986-08-20 Gen Electric Co Plc Circuit breakers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2171255A (en) * 1985-02-15 1986-08-20 Gen Electric Co Plc Circuit breakers

Also Published As

Publication number Publication date
SE304780B (en) 1968-10-07
ES286502A1 (en) 1963-11-16
BE630192A (en)
AT245091B (en) 1966-02-10
CH424887A (en) 1966-11-30

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