White powder and method for producing the same
AssigneesKatsuto Nakatsuka, Nittetsu Mining Co., Ltd.
InventorsAkira Kishimoto, Takafurmi Atarashi, Shinichi Ogura, Kiyoshi Hoshino, Tetsurou Hoshiba, Katsuto Nakatsuka
Life of this patent
Estimating the term…
Abstract
The invention provides white powder high in the lightness and a method for producing the same. The white powder has a titanium oxide film and a metallic silver film in this order on a surface of a base particle. The white powder is preferably 75 or more in the lightness L* and the base particle is preferably 70 or less in the lightness L*. Furthermore, the base particle is preferably a magnetic material and a film thickness of the titanium oxide film is preferably in the range of 5 to 500 nm.
Claims10
A white powder comprising, on a surface of a base particle, a titanium oxide film and a metallic silver film in this order.
A method for producing a white powder, wherein on a surface of a base particle a titanium oxide film and a metallic silver film are formed in this order.
Dependencies are inferred from the claim text.