Method for coating a substrate with an electrically conductive layer
AssigneeSaint-Gobian Vitrage
InventorsVincent Sauvinet, Jean Bletry, Micheline Bonnaud, Maurice Trouve
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Abstract
A method for coating a substrate, preferably of glass, with a pyrolyzed transparent, electroconductive layer. The coating is comprised of indium formate, optionally mixed with a powdered or gaseous tin compound or a gaseous organotin compound. The coating layer is deposited upon a hot substrate whereupon it pyrolytically decomposes, forming a layer which is subsequently heat treated in a reducing or an oxidizing atmosphere to optionally enhance the low emissivity and low resistivity of the coating or reduce said low emissivity and low resistivity properties.
Claims26
A method for coating a substrate with a pyrolyzed metal oxide coating which comprises depositing a predetermined amount of dry indium formate of the formula In (HCOO).sub.3 upon a surface of a heated substrate so as to pyrolyze said indium formate and form a coating of indium oxide upon the surface of the substrate.
A method for forming a transparent electroconductive coating on a substrate which comprises.
- preparing a dry metal composition containing indium formate of the formula In (HCOO).sub.3 ;
- depositing said composition onto a surface of a heated substrate with coating means so as to pyrolyze the composition;
- and
- heating the coated substrate to enhance the properties of the layer.
A method for coating a substrate with a pyrolyzed metal oxide coating which comprises:
- reacting an indium compound with an inorganic acid to form an indium salt;
- reacting the indium salt with ammonia to form an indium hydroxide precipate;
- reacting the precipitate with formic acid to obtain indium formate;
- depositing a predetermined amount of said indium formate in dry form upon the surface of a heated substrate so as to pyrolyze said indium formate of the formula In (HCOO).sub.3 and form a coating of indium oxide upon the surface of said substrate.
Dependencies are inferred from the claim text.