Homogeneously surface-fluorinated metal oxide particulates, process for manufacturing the same, and use of the same

Abstract

The present invention provides homogeneously surface-fluorinated metal oxide particulates, characterized in that a metal oxide particulate such as Ti, Al, Si, Ag, Cu, Fe, Zr, Ce, Mn, Sn, Ge and Ta is surface reacted with fluorine gas while allowing the metal oxide particulate to flow, and also provides a process for manufacturing the metal oxide particulates. The homogeneously surface-fluorinated metal oxide particulates according to the present invention are useful as an additive for a weatherproof coating material, a weatherproof resin or a cosmetic material. Furthermore, according to the process of the present invention, the surface of a metal oxide particulate can be homogeneously fluorinated at any ratio in a very simple and efficient manner. Even when the homogeneously surface-fluorinated titanium oxide is incorporated as a white pigment into a thermoplastic resin in a high concentration, the resin coated substrate can maintain the surface smoothness without causing any partial defect and troubles can be greatly prevented from occurring at the melt extrusion coating for obtaining the resin coated substrate.

Dependencies are inferred from the claim text.