C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
C03C 17/34 (2006.01) B32B 17/06 (2006.01) C03C 17/00 (2006.01) C23C 16/40 (2006.01) C23C 16/453 (2006.01) C23C 28/02 (2006.01)
Patent
CA 2049441
In methods of forming a coating comprising a pyrolytically formed oxide layer on a travelling hot glass substrate, the substrate is contacted with coating precursor material in the presence of oxygen. In order to prevent interaction between coating precursor material used for applying an upper coating stratum, and/or to facilitate modification of the optical or other properties of the coating as a whole, an oxide substratum of said coating ("the undercoat") is pyrolytically formed in an incompletely oxidized state by contacting the substrate in an undercoating chamber with undercoat precursor material in the presence of oxygen in insufficient quantity for full oxidation of the undercoat material on the substrate and in that such undercoat is overcoated with an upper coating layer while it is still in an incompletely oxidized state, and while the substrate is still hot, thereby to preserve such undercoat in an incompletely oxidized state.
Hannotiau Michel
Terneu Robert
Glaverbel
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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