Process for coating glass with a film of tin oxide

Coating processes – Optical element produced – Transparent base

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427160, 427164, 427166, 427226, B05B 506

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active

047073837

ABSTRACT:
An improved process for coating the surface of a transparent refractory material such as glass with a semi-reflective film of tin oxide by depositing finely divided particles of a pyrolytically decomposable organotin compound on the surface of a substrate which has been heated to a temperature of between about 400.degree. and 650.degree. C. The finely divided organotin compound has a particle size not greater than about 20 microns. Before deposition, the organotin compound is mixed with a predetermined amount of finely divided particles of a compound containing a halogen constituent. Deposition is accomplished by suspending the mixture of both compounds in an anhydrous carrier gas which is projected onto the surface of the substrate. In an alternative process, a single compound containing both tin and halogen constituents is projected onto the surface of the pre-heated substrate by means of the anhydrous carrier gas.

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patent: 4146657 (1979-03-01), Gordon
patent: 4172159 (1979-10-01), Marcault
patent: 4182783 (1980-01-01), Henery

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