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US 4,788,079 AGranted
Method of making haze-free tin oxide coatings
AssigneeM&T Chemicals Inc.
InventorGeorg H. Lindner
Life of this patent
Estimating the term…
Abstract
Haze-free tin oxide coatings are made from an organotin compound which ordinarily gives only hazy coatings. The improvement comprises first forming an undercoat of a haze-free tin oxide film on a substrate, preferably by decomposition of monophenyltin trichloride. Thereafter the tin oxide overcoating assumes the haze-free characteristics of the undercoat film.
Claims8
A method of forming haze-free tin oxide coatings on a substrate from an organotin compound which usually forms only hazy films under advantageous deposition conditions which comprises:
- forming a haze-free tin oxide undercoat film on said substrate by contacting said substrate at a temperature of 450.degree. C. to 650.degree. C. with a vapor of monophenyltin trichloride and thereafter depositing a desired tin oxide overcoat from the thermal decomposition of a tin compound selected from the group of tin tetrachloride, dibutyltin diacetate, dimethyl tin chloride and monobutyltin trichloride whereby the tin oxide overcoat assumes the haze-free characteristics of said undercoat.
Dependencies are inferred from the claim text.