Sol-gel composition curable under the effect of UV radiation to obtain a hydrophobic coating

摘要

Cross-linkable composition under the effect of UV radiation, for obtaining a hydrophobic coating on a glass substrate, said composition being characterized in that it comprises: a) between 80 and 98% by weight of at least one oligomer of an organo-functional compound of a metal A chosen from Si, Ti, Zn, Zr, Al, Ce, V, Nb or Y or of an alloy of metals InSn and comprising the following alternation: [(RO )2AO]n (I) wherein: - A is selected from Si, Ti, Zn, Zr, Al, Ce, V, Nb or Y or an InSn alloy;- R is a linear, branched, or aromatic carbon chain R , preferably linear, preferably in which the carbon number is between 1 and 6, limits included, preferably between 1 and 3 limits included, - n is between 2 and 20, preferably between 4 and 10, b) between 0.1 and 5% by weight of a PAG photoacid compound, c) between 1 and 15% by weight of a compound comprising a hydrophobic group.