Solar control coated substrate with high reflectance
AssigneeGlaverbel
InventorPhilippe Legrand
Life of this patent
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Abstract
A solar control coated substrate with high reflectance (RL) and comprises a pyrolytically-formed coating layer containing oxides of tin and antimony in a Sb/Sn molar ratio of from 0.03 to 0.16, characterized in that the coating layer further contains additives comprising at least one element selected form the group consisting of aluminum, chromium, cobalt, iron, manganese, magnesium, nickel, vanadium, zinc, and zirconium and is free from fluorine, whereby the so coated substrate has a reflectance of at least 10%. The invention covers a process for making such a coated substrate and a glazing panel incorporating such a coated substrate.
Claims39
A coated transparent substrate, comprising:
- a transparent substrate;
- and
- a pyrolytically-formed coating layer which is carried by the transparent substrate, which is formed by pyrolysis of at least one precursor, which contains tin oxide and antimony oxide in a Sb/Sn molar ratio range from 0.03 to 0.16 and an additive comprised of at least one element selected from the group consisting of aluminum, chromium, cobalt, iron, manganese, magnesium, nickel, vanadium, zinc and zirconium, and which is free from fluorine so that the coated transparent substrate has a reflectance (RL) of at least 10%.
A method of forming a transparent coated substrate, comprising:
- providing a reactant mixture;
- and
- pyrolytically depositing a coating layer onto a transparent substrate from the reactant mixture, the coating layer containing oxides of tin and antimony in a Sb/Sn molar ratio ranging from 0.03 to 0.16,
- wherein the reactant mixture comprises precursors for tin oxide and antimony oxide, and further comprises an additive comprising at least one element selected from the group consisting of aluminum, chromium, cobalt, iron, manganese, magnesium, nickel, vanadium, zinc and zirconium, and which is free from fluorine so that the transparent coated substrate has a reflectance (RL) of at least 10%.
A coated transparent substrate having a reflectance (RL) of at least 10% comprising:
- a transparent substrate;
- and
- a pyrolytically formed coating layer which is carried by the transparent substrate, which is free from fluorine, and which is formed by pyrolysis of at least one precursor, which contains tin oxide and antimony oxide in a Sb/Sn molar ratio ranging from 0.01 to 0.5, and which contains an additive comprised of at least one element selected from the group consisting of aluminum, chromium, cobalt, iron, manganese, magnesium, nickel, vanadium, zinc and zirconium, and one of the following (a) or (b);
- (a) the pyrolytically formed coating layer has a thickness of from 100 to 500 nm;
- (b) an undercoat layer which is carried by the substrate layer.
A method of forming a transparent coated substrate having a reflectance (RL) of at least 10%, comprising:
- providing a reactant mixture;
- and
- pyrolytically depositing by chemical vapor deposition (CVD) a coating layer which is free from fluorine onto the transparent substrate from the reactant mixture, the coating layer containing oxides of tin and antimony in a Sb/Sn molar ratio ranging from 0.01 to 0.5, wherein the reactant mixture comprises precursors for tin oxide and antimony oxide, and further comprises an additive comprising at least one element selected from the group consisting of aluminum, chromium, cobalt, iron, manganese, magnesium, nickel, vanadium, zinc and zirconium which is present in the reactant mixture within the range 0.2-3.6% by weight.
Dependencies are inferred from the claim text.