Method for the preparation of electrically conductive infrared-r

Details Method for the preparation of electrically conductive infrared-r Method for the preparation of electrically conductive infrared-r

1994-09-02

1995-10-10

Beck, Shrive

Coating processes

Electrical product produced

Metallic compound coating

427160, 427229, 427 42, B05D 512

Patent

active

054569435

ABSTRACT:
A method is described for the preparation of electrically conductive, infrared-reflecting layers on glass, glass-ceramic or enamel surfaces by spraying and thermally decomposing liquid Sn(IV) compounds and fluorine compounds as preparations containing doping agents on to the surface heated to 400.degree. to 800.degree. C., yet below their softening point, wherein, as liquid preparations, ionically stabilized, organic tin(IV) acid sols are used, which contain aliphatic alcohols or ketones with, in each case, at most 6 carbon atoms in the molecule or esters with a boiling point below 180.degree. C. as liquid, organic medium, as well as fluoride ions in an adequate amount for doping. The preparations are homogenous, stable for a long time, and can readily be diluted with alcohols, ketones, and other polar solvents. The tin oxide layers, produce with the preparations on the substrates, have a high transparency in the wavelength of visible light, a low surface resistance and a high reflection in the infrared wavelength region.

REFERENCES:
patent: 2566346 (1951-09-01), Lytle et al.
patent: 4265974 (1981-05-01), Gordon
patent: 4293594 (1981-10-01), Yoldas et al.
Yi, "Sol-Gel Processing of Complex Oxide Films" Ceramic Bulletin vol. 70 No. 7 1991 pp. 1173-1179.

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