Method of making infrared reflecting coating

Details Method of making infrared reflecting coating Method of making infrared reflecting coating

C - Chemistry, Metallurgy

03

C

117/56

C03C 17/23 (2006.01)

Patent

CA 1220678

ABSTRACT METHOD OF MAKING INFRARED REFLECTING COATING A process for production of infrared reflecting fluorine containing tin oxide coatings on flat glass comprises directing on to a hot glass surface a suspension in a carrier gas of a finely divided solid volatile inorganic tin (IV) compound, free from carbon-tin bonds, containing both chlorine and fluorine. Especially preferred tin compounds are ammonium hexahalostannates of the formula (NH4)2SnHal6 wherein Hal represents halogen, and a minor atomic proportion of the halogen present is fluorine and the balance chlorine. Use of solid tin (IV) compounds in accordance with the invention gives coatings of a higher light transmission per unit thickness when compared with coatings obtained using solid organometallic tin compounds referred to in the prior art.

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