| 摘要 |
A process for production of infra red 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 organo-metallic thin compounds referred to in the prior art. |
