| abstract |
PROBLEM TO BE SOLVED: To provide a component of a high refractive index hard coat agent applied to the surface of a plastic lens, film, or plastic molded article, a surface treatment agent for glass and ceramics, a catalyst and a binder for a catalyst, Provided is a method for producing a titanium oxide (TiO 2 ) -zirconium oxide (ZrO 2 ) -tin oxide (SnO 2 ) composite sol used for various fine ceramics raw materials, inorganic anion exchangers and the like. SOLUTION: This is a method for producing a titanium oxide-zirconium oxide-tin oxide composite sol in which a titanium salt, an oxyzirconium salt and metal tin are reacted in an aqueous medium in the presence of hydrogen peroxide. |