Window glass with an electroconductive layer, obtained by pyrolysis of powdered components, which can be used as a windshield for an automobile
First Claim
1. A curved window glass comprising at least one curved sheet of glass coated with an electroconductive layer of metal oxide comprised of indium tin oxide (ITO), obtained by pyrolysis, followed by reduction treatment, of a powdered mixture of a tin compound and an indium compound, on face 3 of the faces of said curved window glass numbered conventionally 1, 2, 3 and 4 proceeding from the outside to the inside of the space enclosed by the window glass, said (ITO) layer covered by a sheet of flexible plastic material having an optical index between that of the metal oxide layer and that of air and closer to that of the metal oxide layer than to the index of air.
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Abstract
A window glass comprising at least one sheet of glass coated with an electroconductive ITO layer, pyrolyzed from powdered components, combined with a flexible plastic material of the PVB, PU, PVC type, with an index approaching more the index of the ITO layer than the index of air, with which the said layer is coated, and a sheet of glass dyed in the mass, with the same color as the ITO layer, and with properties of reduced energy transmission also entering advantageously into the composition of the window glass is provided. The invention particularly applies to the production of heated windshields for automobiles.
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Citations
33 Claims
- 1. A curved window glass comprising at least one curved sheet of glass coated with an electroconductive layer of metal oxide comprised of indium tin oxide (ITO), obtained by pyrolysis, followed by reduction treatment, of a powdered mixture of a tin compound and an indium compound, on face 3 of the faces of said curved window glass numbered conventionally 1, 2, 3 and 4 proceeding from the outside to the inside of the space enclosed by the window glass, said (ITO) layer covered by a sheet of flexible plastic material having an optical index between that of the metal oxide layer and that of air and closer to that of the metal oxide layer than to the index of air.
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33. A curved window glass prepared by coating a flat sheet of glass with an electroconductive layer of metal oxide comprised of indium tin oxide (ITO) obtained by pyrolysis, followed by a reduction treatment, of a powdered mixture of a tin compound and an indium compound, on face 3 of the faces of said curved window glass numbered conventionally 1, 2, 3 and 4 proceeding from the outside to the inside of the space enclosed by the window glass, followed by bending of the glass sheet thereby shaping the glass such that face 3 is convex, and then covering the ITO layer with a sheet of flexible polyvinylbutyral, and finally completing the curved windshield by placing a bent glass sheet over the polyvinylbutyral layer.
Specification