GB1444061A - Coating - Google Patents

Coating

Info

Publication number
GB1444061A
GB1444061A GB2487374A GB2487374A GB1444061A GB 1444061 A GB1444061 A GB 1444061A GB 2487374 A GB2487374 A GB 2487374A GB 2487374 A GB2487374 A GB 2487374A GB 1444061 A GB1444061 A GB 1444061A
Authority
GB
United Kingdom
Prior art keywords
silane
suspension
coating
quartz
ceramic substrate
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
GB2487374A
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.)
Welwyn Electric Ltd
Original Assignee
Welwyn Electric Ltd
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 Welwyn Electric Ltd filed Critical Welwyn Electric Ltd
Publication of GB1444061A publication Critical patent/GB1444061A/en
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
    • H01B3/46—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 silicones
    • 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
    • C08K3/34—Silicon-containing compounds
    • 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
    • C08K5/00—Use of organic ingredients
    • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
    • C08K5/0016—Plasticisers
    • 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
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Paints Or Removers (AREA)

Abstract

1444061 Insulating coatings WELWYN ELECTRIC Ltd 5 June 1974 [4 April 1974] 24873/74 Heading B2E [Also in Division C3] Electrical resistors are provided with a flameproof insulating protective coating by applying a suspension comprising (i) a mixture consisting of 2-20% wt of a polymerisable organosilane having at least one hydrolysable radical and 98-80% wt of a powdered inorganic siliceous material capable of coupling or otherwise reacting with the silane with the proviso that up to 30% wt of the siliceous material may be replaced by one or more substances selected from suspension agents, pigments and other compatible additives e.g. resins and fillers, and (ii) a liquid diluent, evaporating off the diluent and then curing the coating by heating e.g. to 100‹-200‹C. The preferred silane has the formula (Silane A). Suitable siliceous materials are crystalline silica, a silicate, quartz, steatite, porcelain, silicate glass, mica and/or asbestos. Suitable liquids are water, ethanol, methanol, acetone, methyl "Oxitol" (RTM) and/or isopropyl alcohol. Mixture (i) may comprise up to 20% wt of an organopolysiloxane resin. In example 1 a cylindrical resistor comprising a ceramic substrate fitted with metal terminal leads and having a nickel-chromium wire resistance element wound thereon is provided with a coating prepared from a suspension comprising silane A, powdered electrical porcelain, finely ground quartz, Cr 2 O 3 pigment and water. In example 2 a cylindrical resistor comprising a ceramic substrate having a tin oxide resistive film and metallic terminals is provided with a coating prepared from a suspension comprising silane A, quartz powder, asbestine suspending agent, red iron oxide pigment, a methylphenylpolysiloxane resin and isopropyl alcohol.
GB2487374A 1974-04-04 1974-06-05 Coating Expired GB1444061A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT50117/74A IT1005936B (en) 1974-04-04 1974-04-04 INSULATING COMPOSITION AND ELECTRIC RESISTANT PROTECTED WITH THE SAID COMPOSITION

Publications (1)

Publication Number Publication Date
GB1444061A true GB1444061A (en) 1976-07-28

Family

ID=11272304

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2487374A Expired GB1444061A (en) 1974-04-04 1974-06-05 Coating

Country Status (2)

Country Link
GB (1) GB1444061A (en)
IT (1) IT1005936B (en)

Also Published As

Publication number Publication date
IT1005936B (en) 1976-09-30

Similar Documents

Publication Publication Date Title
CA1254330A (en) Electroconductive element, precursor conductive composition and fabrication of same
ES8604631A1 (en) Process for preparing a tin oxide pigment doped with antimony oxide, having improved electrical conductivity properties, and conductive white or coloured paints containing it and useful for eliminating electrostatic charges.
KR850000140A (en) Powder Core Magnetic Device
KR930700610A (en) Coating method of electrically conductive material and negative electrode weldable aqueous electrocoating paint
US4547310A (en) Carbon resistive paste
US3575916A (en) Impregnating and coating composition for porous ceramic insulation
US6409815B1 (en) Surface-modified conductive pigment
GB1444061A (en) Coating
US2695275A (en) Silver paint
US3048914A (en) Process for making resistors
US3922246A (en) Organopolysiloxane compositions which cure at ambient temperature
SE7610232L (en) ELECTRICAL RESISTANCE AND MANUFACTURE THEREOF
GB1408632A (en) Reducing tracking on electrical insulators
JPH0369953B2 (en)
US3903349A (en) Electrically conductive cement
UST988008I4 (en) Coating agents comprising fluoroterpolymers and polyarylene sulfide resins
GB1446699A (en) Liquid 1,2-poly-butadiene-talc powder compositions
GB1416591A (en) Production of electrothermic heat-generating structures
US3834938A (en) Flameproof moisture-resistant coatings for electrical components
JPS5688470A (en) Epoxy resin composition for powder paint
DE2845540C2 (en) Non-flammable coating agent and its use
US2414351A (en) Immersion heater
US3666551A (en) Impregnating and coating composition for porous ceramic insulation
DE2141169A1 (en) Protective cover, especially for electrical components
KR960011840B1 (en) Coating composition

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee