POWDER COATED WITH COPPER (I) OXIDE, AND PROCESS FOR PRODUCTION THEREOF

摘要

Disclosed is a powder coated with copper (I) oxide, in which copper (I) oxide is adhered well, which can be dispersed well in a stain-proof coating, and which can impart high storage stability to a stain-proof coating. Also disclosed is a process for producing a powder coated with copper (I) oxide, which comprises the following steps: a surface treatment step of contacting a core material with at least one aqueous surface treatment solution selected from an aqueous solution of a tin salt, an aqueous solution of a silver salt and an aqueous solution of a palladium salt to produce a surface-treated product of the core material; an electrodeposition step of dispersing the surface-treated product of the core material in an aqueous electrolyte solution containing an electrolyte and an anti-oxidant agent, and electrodepositing copper (I) oxide on the surface of the surface-treated product of the core material by using metal copper as an anode to produce a powder coated with copper (I) oxide; and a water-washing step of washing the powder coated with copper (I) oxide with water to produce the desired powder coated with copper (I) oxide, wherein the aqueous electrolyte solution has a chlorine ion concentration of 20 to 200 g/L.