GB737371A - Electroconductive articles - Google Patents
Electroconductive articlesInfo
- Publication number
- GB737371A GB737371A GB222551A GB222551A GB737371A GB 737371 A GB737371 A GB 737371A GB 222551 A GB222551 A GB 222551A GB 222551 A GB222551 A GB 222551A GB 737371 A GB737371 A GB 737371A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coating
- glass
- film
- bus
- bars
- 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
Links
Classifications
-
- 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
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
- C03C17/23—Oxides
-
- 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
-
- 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
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/21—Oxides
-
- 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
- C03C2217/00—Coatings on glass
- C03C2217/20—Materials for coating a single layer on glass
- C03C2217/21—Oxides
- C03C2217/211—SnO2
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
- Surface Treatment Of Glass (AREA)
- Laminated Bodies (AREA)
Abstract
737,371. Electric heating resistances. PITTSBURGH PLATE GLASS CO. Jan. 29, 1951, No. 2225/51. Class 39 (3). An electrically conductive article comprises at least one pair of bus-bars each in linear contact along its whole length with a conductive film on a refractory base, said film having one or more areas of conductivity different from other areas in order to obtain even or other desired current distribution in the film. The base may be of glass and the film is also transparent and may be laminated with a plastic such as polyvinyl butyral and glass to form a laminated windscreen, which may be heated for de-icing on vehicles. The bus-bars 14 are placed on opposite sides of a rectangular, circular or other-shaped windsheld coated with a conductive film, which is divided into areas of preferably equal resistance by channels 19 which are poorly conductive or are non-conductive. The channels extend wholly or some partly across the film and are closer together where the bus-bars are closer together, to obtain more even heating. The channels may be straight and may have perpendicular spurs or branches or may be curved, e.g. concave or convex towards the centre of the windshield. The edges parts 12 of the windshield may be unheated, or may have non-conducting channels extending inwardly therefrom. The number of short perpendicular branches may increase as the distance between the bus-bars decreases. The lengths of channels 19a which extend only partly across the film increase as the distance between the bus-bars increases. In Fig. 7, juxtaposed areas of higher conductivity occur where the bus-bars are wider apart to obtain more even heating. The conductivity of the film is increased gradually or in zones either by increasing its thickness or using coating materials of greater conductivity. The coating may be deposited on lime soda glass, borosilicate glass, phosphate glass, china, mica, silicon carbide, tungsten carbide, porcelain, stone or other refractory melting above 1105‹ F. The bus-bars comprise a metal powder, e.g. gold or silver, and a vitrifying binder and may include silica and the oxides of lead and boron with French fat oil and turpentine or water and alcohol and 'may be painted on. The glass is then heated to 400-800‹ F. and the conductive coating is sprayed on, e.g. a tin salt such as tin tetrachloride in aqueous solution or vapour with a reducing agent such as methanol or phenyl hydrazine hydrochloride. The coating comprises largely tin oxide, but a conductive oxide of cadmium, antimony, cobalt, zinc, indium, silicon, titanium, silver, thallium, chromium, platinum or other metal may be used prepared from a bromide, chloride or acetate of the metal. Areas of glass not to be covered are covered with a paste comprising silica, alumina, alkalies and a boron compound in a liquid medium of methanol, glycerol, dioctyl sodium sulfosuccinate and a sulphonated bicarboxylic acid in water, this paste being finally removed: or the plate may be wholly coated and parts of the coating may be removed by depositing thereon a powdered metal more electronegative than the coating and a dispersing agent such as zinc and a water-dispersible binder, the zinc coated base being then sprayed with acid. A final washing with water then removes the acid and the covered part of the coating from the glass. Parts of the coating not to be removed may be previously covered with an easily removable plastic film such as regenerated cellulose tape. Parts of the coating may be removed by a knife. Specification 724,086 and U.S.A. Specification 2,614,944 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB222551A GB737371A (en) | 1951-01-29 | 1951-01-29 | Electroconductive articles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB222551A GB737371A (en) | 1951-01-29 | 1951-01-29 | Electroconductive articles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB737371A true GB737371A (en) | 1955-09-28 |
Family
ID=9735798
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB222551A Expired GB737371A (en) | 1951-01-29 | 1951-01-29 | Electroconductive articles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB737371A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2592544A1 (en) * | 1985-12-26 | 1987-07-03 | Nippon Sheet Glass Co Ltd | CONDUCTIVE GLASS PLATE, PARTICULARLY FOR MOTOR VEHICLES FOR DEFROSTING OR THE LIKE. |
EP1404153A1 (en) * | 2002-09-27 | 2004-03-31 | DaimlerChrysler AG | Electrically heatable windshield |
WO2005020637A1 (en) * | 2003-08-20 | 2005-03-03 | Agc Automotive Americas Co. | Heated side window glass |
-
1951
- 1951-01-29 GB GB222551A patent/GB737371A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2592544A1 (en) * | 1985-12-26 | 1987-07-03 | Nippon Sheet Glass Co Ltd | CONDUCTIVE GLASS PLATE, PARTICULARLY FOR MOTOR VEHICLES FOR DEFROSTING OR THE LIKE. |
GB2186769A (en) * | 1985-12-26 | 1987-08-19 | Nippon Sheet Glass Co Ltd | Conductive glass plate |
EP1404153A1 (en) * | 2002-09-27 | 2004-03-31 | DaimlerChrysler AG | Electrically heatable windshield |
WO2005020637A1 (en) * | 2003-08-20 | 2005-03-03 | Agc Automotive Americas Co. | Heated side window glass |
US8530792B2 (en) | 2003-08-20 | 2013-09-10 | Agc Automotive Americas Co. | Heated side window glass |
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