| abstract |
(57) [Summary] [Object] To provide a composite oxide pigment having good heat resistance and comprising fine particles of cobalt, zinc and silicon. [Structure] The molar ratio of the constituents, zinc, cobalt and silicon is 0.05 to 1.5 for 1 to silicon. And zinc is in the range of 0.1 to 2.0, and cobalt BET specific surface area, characterized in that it is adjusted to 5m 2 / g~20m 2 / g, fine particles composed of oxides of zinc and silicon Complex oxide blue pigment. |