| 摘要 |
A method for preparing a titania-metal composite, which comprises reacting a solution of a tetra-valent titanium salt with a basic solution in the presence of at least one of copper, manganese, nickel, cobalt, iron, zinc and compounds thereof, to thereby form hydroxides of the above metal and titanium, and then converting a hydroxide of titanium to a peroxide of titanium by the use of an oxydizing agent, to prepare a dispersion or a fluid containing fine titanium oxide particles having a peroxo group. A film containing such particles is formed by using the dispersion or fluid singly in the vicinity of a film of an organic dye or pigment or formed together with an organic dye or pigment. A film containing such particles can be advantageously used for preventing the lowering of color decoration characteristics of a paint, a printing matter, a building material, a fiber, an organic polymer resin product, or the like, due to fading or discoloration and for imparting the resistance to surface staining or hydrophilic property to such a material. |
