Water-repellent metal oxide film coated on glass substrate and m

Details Water-repellent metal oxide film coated on glass substrate and m Water-repellent metal oxide film coated on glass substrate and m

1992-12-16

1993-10-05

Bell, Mark L.

Coating processes

Heat decomposition of applied coating or base material

106 2, 10628713, 10628714, 10628716, 427429, 428428, 428429, 501 12, B05D 302, C09K 318

Patent

active

052503224

ABSTRACT:
The disclosure relates to a metal oxide film formed on a glass substrate by the so-gel process with using a solution of a metal alkoxide. To afford water repellency to the oxide film, a fluoroalkylsilane is mixed with an alkoxysilane solution in the molar ratio of the alkoxysilane to the fluoroalkylsilane ranging from 1:10 to 10:1. Then, the mixed solution is diluted with a solvent such that the total concentration of the alkoxysilane and the fluoroalkylsilane is from 1 to 10 wt % in a diluted solution. Then, water in the amount of 100 mol % to 1000 mol % of the total amounts of the fluoroalkylsilane and the alkoxysilane is added to the diluted solution so as to partially hydrolyze the fluoroalkylsilane and the alkoxysilane, thereby forming a sol. Then, the sol is applied to the glass substrate, and the coated glass substrate is heated so as to form the metal oxide film thereon.

REFERENCES:
patent: 4525213 (1985-06-01), Linn
patent: 4648904 (1987-03-01), DePasquale et al.
patent: 4874431 (1989-10-01), Fey et al.
patent: 5051129 (1991-09-01), Cuthbert et al.
patent: 5073195 (1991-12-01), Cuthbert et al.
patent: 5196054 (1993-03-01), Schmuck et al.

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