Coatings for glass

Details Coatings for glass Coatings for glass

C - Chemistry, Metallurgy

03

C

117/128, 117/85

C03C 17/245 (2006.01) C03C 17/34 (2006.01) C23C 16/40 (2006.01)

Patent

CA 1327143

ABSTRACT COATINGS FOR GLASS Disclosed is an invention providing a process for form- ing a useful underlayer on a glass surface comprising directing on to the hot glass surface at a temperature of 600°C to 750°C a gaseous mixture of a silane, an unsaturated hydrocarbon compound and carbon dioxide thereby depositing a transparent layer containing silicon and oxygen on the glass surface. Underlayers produced by the process of the invention act as barriers to the migration of alkali metal ions from the glass and are useful when an overlying layer, sensitive to the migration of alkali metal ions from the glass, is applied directly or indirectly over the underlayer. According to a further aspect of the invention, the process additionally comprises the step of applying a layer, sensitive to the migration of alkali metal ions from the glass, over the underlayer.

555118

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