Production of infrared reflecting coatings on glass
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United States of America Patent
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Feb 16, 1988
Grant Date -
N/A
app pub date -
Mar 14, 1986
filing date -
Mar 22, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Infra red reflecting fluorine-containing tin oxide coatings are applied to glass using a solid chlorine-containing volatile inorganic tin (IV) compound optionally containing fluorine. The inorganic tin (IV) compound is suspended in carrier gas. When that compound is fluorine free, the suspension is directed on to the hot glass surface in the presence of a separate source of fluorine which may be an organic tin compound. When the inorganic tin (IV) compound contains fluorine, the suspension is directed on to the hot glass surface in the presence of an organic tin compound which may contain fluorine. Examples of the inorganic tin (IV) compounds which may be used are ammonium hexahalostannates of the formula (NH.sub.4).sub.2 SnHal.sub.6 wherein Hal represents halogen, being either chlorine, or a minor atomic proportion of fluorine and the balance chlorine.
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