SOL FOR SOL-GEL PROCESS COATING OF A SURFACE AND COATING METHOD BY SOL-GEL PROCESS USING SAME

摘要

Soil for the sol-gel coating of a surface, said sol comprising in percentage by weight: a) - 3 to 30%, preferably 5 to 20%, more preferably 7 to 15%, more preferably 8 to 14% more preferably 10 to 13%, for example 10.8% or 12% of at least one organometallic compound of zirconium, aluminum, or titanium; b) 5 to 50%, preferably 5 to 40%, more preferably 10 to 40%, more preferably 15 to 20%, for example 22% or 23% of at least one organosilane compound; c) - 1 to 15%, preferably 2 to 10%, more preferably 3 to 8%, for example 5%, of at least one compound selected from acids, bases, glycols and ethoxyethanol; d) - the 100% complement of demineralised or distilled water; the total content of a) and b) being greater than 30%, preferably greater than 31.2; 31.5; 32; or 33%, more preferably greater than 35%, more preferably greater than 40%, more preferably greater than 50%. Kit, "kit" comprising: - a first container containing a first part A in liquid form comprising the components a), c) and d) of the soil; a second container containing a second part B in liquid form comprising component b) of the soil. A process for preparing a sol-gel layer using said sol and layer thus obtained, and substrate coated with at least one such sol-gel layer. A process for preparing a coating comprising a plurality of layers on a surface of a substrate, wherein at least one of these layers is a sol-gel layer prepared by the above process.