Wasserabweisende Oberflächenbehandlung mit integriertem Grundiermittel

摘要

An article is disclosed comprising a substrate of glass, plastic, metal, organic polymer coated substrates and inorganic coated substrates, wherein at least a portion of the surface of the substrate is treated with a composition comprising a mixture of perfluoroalkylalkylsilane and a completely hydrolyzable silane. The perfluoroalkylalkylsilane provides rain and soil repellency to the substrate surface, while the fully hydrolyzable silane hydrolyzes and condenses to form silica, which imparts resistance to weathering and abrasion, thus improving the durability of the rain and soil repellency properties. The method of providing such a durable rain and soil repellent surface comprises contacting the substrate surface with a composition comprising perfluoroalkylalkylsilane and fully hydrolyzable silane, and may include first depositing a layer of silica on the substrate surface, then contacting the substrate surface with a composition comprising perfluoroalkylalkylsilane and fully hydrolyzable silane.