GB401022A - Improvements relating to the production of electrically conducting coatings - Google Patents

Improvements relating to the production of electrically conducting coatings

Info

Publication number
GB401022A
GB401022A GB14613/32A GB1461332A GB401022A GB 401022 A GB401022 A GB 401022A GB 14613/32 A GB14613/32 A GB 14613/32A GB 1461332 A GB1461332 A GB 1461332A GB 401022 A GB401022 A GB 401022A
Authority
GB
United Kingdom
Prior art keywords
finely
consist
metal
divided metal
conducting
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
GB14613/32A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB401022A publication Critical patent/GB401022A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulating Bodies (AREA)

Abstract

A paint for producing an electrically-conducting coating on a body, applied for example by spraying, comprises a finely-divided metal mixed with an organic binding agent, the finely-divided metal having been treated, before mixing with the binding agent, to give it a surface free from oxides and other non-conducting compounds. The treatment of the finely-divided metal may consist in cleaning, for example by treatment with sulphuric acid and washing with alcohol, or may consist in precipitating a nobler metal, e.g. silver, on to the finely divided metal e.g. copper or zinc. The powdered copper &c. may be suspended in water and a solution of sodium silver cyanide added, the suspension being drawn off, washed with alcohol and ether, and dried in a vacuum dessicator. The organic binder with which the treated metal is mixed may consist of collodion, ester resin, and dibutyl phthalate in a solvent such as amyl acetate. The mixture may be applied in the cold and the process may be used for the production of conductive coatings on glass, ceramic materials &c., for example on the external surface of a thermionic valve. An electric condenser may be made by coating a sheet of mica with conducting layers by the process described.ALSO:An electrically-conducting coating is formed on a body by applying, for example by spraying, a finely-divided metal mixed with an organic binding agent, the finely-divided metal having been treated, before mixing with the binding agent, to give it a surface free from oxides and other non-conducting compounds. The treatment of the finely-divided metal may consist in cleaning, for example by treatment with sulphuric acid and washing with alcohol, or may consist in precipitating a nobler metal, e.g. silver, on to the finely-divided metal, e.g. copper or zinc. The powdered copper &c. may be suspended in water and a solution of sodium silver cyanide added, the suspension being drawn off, washed with alcohol and ether, and dried in a vacuum dessicator. The organic binder with which the treated metal is mixed may consist of collodion, ester resin, and dibutyl phthalate, in a solvent such as amyl acetate. The mixture may be applied in the cold and the process may be used for the production of conductive coatings on glass, ceramic materials &c., for example on the external surface of a thermionic valve. An electric condenser may be made by coating a sheet of mica with conducting layers by the process described.
GB14613/32A 1931-10-27 1932-05-23 Improvements relating to the production of electrically conducting coatings Expired GB401022A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL401022X 1931-10-27

Publications (1)

Publication Number Publication Date
GB401022A true GB401022A (en) 1933-11-09

Family

ID=19785892

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14613/32A Expired GB401022A (en) 1931-10-27 1932-05-23 Improvements relating to the production of electrically conducting coatings

Country Status (1)

Country Link
GB (1) GB401022A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975126C (en) * 1941-04-29 1961-08-24 Siemens Ag Process for the production of wound capacitors with high capacity constancy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE975126C (en) * 1941-04-29 1961-08-24 Siemens Ag Process for the production of wound capacitors with high capacity constancy

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