Patent ID: 6338905
Filing Date: 2002-01-15
Classification: C03C

Abstract:
A water-repellent glass plate comprising:(a) a glass substrate; (b) a first film being made of silica; and (c) a water-repellent second film formed on said first film, wherein said water-repellent glass plate is prepared by a method comprising steps of: (1) applying a first coating liquid containing tetraisocyanate silane to said glass substrate, thereby to form thereon a precursory film, said tetraisocyanate silane being curable at room temperature; and (2) subjecting said precursory film to a heat treatment at a temperature of about 200-300Â° C. for from about 10 minutes to about 1 hour, thereby to prepare said first film; and (3) applying a second coating liquid to said first film, thereby to form said second film on said first film, said second coating liquid containing an alkoxysilane having at least one fluorocarbon group.