To obtain a cerulean pigment that has high color saturation and high clarity. 高彩度で鮮明性に優れた紺藍色顔料を得る。 - 特許庁
A mixture of ground β-type copper phthalocyanin (A) and ground ε-type copper phthalocyanin (B) or a ground product or a mixture of β-type copper phthalocyanin (A) and ε-type copper phthalocyanin (B) is ground and the resultant ground pigment mixture is pigmented to give the objective cerulean pigment. β型銅フタロシアニン(A)磨砕物及びε型銅フタロシアニン(B)磨砕物との混合物、またはβ型銅フタロシアニン(A)及びε型銅フタロシアニン(B)の混合物の磨砕物を顔料化処理して、紺藍色顔料とする。 - 特許庁