Hydrophobic article

摘要

An alkoxysilane is subjected to hydrolysis and polycondensation in presence of acid catalyst to prepare silica precursor sol for forming silica matrix. An alkoxy group-terminated dimethyl silicone (I) is mixed with the silica precursor sol, and coating liquid is prepared. The coating liquid is applied on surface of substrate, and precursor film is formed. The precursor film is dried to form the material. An alkoxysilane is subjected to hydrolysis and polycondensation in presence of an acid catalyst to prepare a silica precursor sol for forming a silica matrix contained in a functional film of a material which has improved water drop-slipping property. An alkoxy group-terminated dimethyl silicone of formula (I) is mixed with the silica precursor sol, and a coating liquid is prepared. The coating liquid is applied on surface of a substrate, and a precursor film is formed. The precursor film is dried and formed as functional film on the substrate to form the material. [Image] Y1> and Y2>bivalent alkylene group, -(CH2)i-NH-CO-O- or oxygen; R : monovalent alkyl group; i : 0 or positive integer; p and q : 1-3; and n : 2000 or less. An independent claim is also included for production of coating liquid.