Water-repellent products and process for the production thereof

摘要: A water-repellent product of inorganic or organic glass excellent in durability performances such as weatherability, water resistance, moisture resistance and abrasion which is formed a) a substrate b) dense silicon oxide film containing agent at least one compound an fluorine compound, the being on surface by bringing dioxide-supersaturated aqueous solution hydrosilicofluoric acid into contact with substrate.