Delta type blue blue pigment and its manufacturing method

摘要

(1) composed of a melamine alkal paint containing a. Delta. - type deep blue pigment having an average primary particle diameter of 0.5. Mu. M or less, (2). Delta. - type deep blue pigment and a titanium dioxide pigment in a weight ratio of 1 to 20 and a pigment in the solid content of 5% by weight The delta type indentation blue blue pigment having a hue angle h in the range of 275 to 283 when the coating film is colorimetric and has a saturation c * value of 20 or more.