Glazing panel carrying a coating stack
AssigneeAGC Flat Glass Europe SA
InventorDaniel Decroupet
Life of this patent
Estimating the term…
Abstract
A glazing panel has a coating stack comprising in sequence at least a base antireflective layer, an infra-red reflecting layer, a top antireflective layer and a top coat layer comprising at least one material selected from the group consisting of nitrides, oxynitrides, carbides, oxycarbides and carbonitrides of the elements of groups lVb, Vb and VIb of the periodic table.
Claims25
A glazing panel carrying a coating stack comprising in sequence at least:
- a glass substrate
- a base antireflective layer
- an infra-red reflecting layer,
- a top antireflective layer
- a top coat layer
- in which the glazing panel is adapted to be heat treated
- and in which the top coat layer comprises at least one material selected from the group consisting of nitrides, oxynitrides, carbides, oxycarbides and carbonitrides of the elements of groups IVb, Vb and VIb of the periodic table.
2-14. (canceled)
A method of manufacturing a heat treated glazing panel comprising the steps of, in order:
- a) depositing a coating stack on a glass substrate to provide an intermediate glazing panel comprising, in sequence, at least:
- a glass substrate
- a base antireflective layer
- an infra-red reflecting layer, [[and]]
- a top antireflective layer, and
- a top coat layer which comprises at least one material selected from the group consisting of nitrides, oxynitrides, carbides, oxycarbides and carbonitrides of the elements of groups IVb, Vb and VIb of the periodic table.
- b) subjecting the coated, intermediate glazing panel to a heat treatment process in air at a temperature of greater than 550° C.
Use of a top coat layer which comprises at least one material selected from the group consisting of nitrides, oxynitrides, carbides, oxycarbides and carbonitrides of the elements of groups IVb, Vb and VIb of the periodic table to enhance chemical durability before heat treatment of a heat treatable coated glazing panel having at least one metallic infra red reflecting coating layer sandwiched between dielectric layers.
Dependencies are inferred from the claim text.