| 摘要 |
PROBLEM TO BE SOLVED: To obtain a yellow pigment composition which contains an organic yellow pigment and a condensed azo red pigment and is suitably useful as a material for road indication without hue change with the passage of time and without causing problem on environmental pollution and labor hygiene. SOLUTION: This pigment composition contains (A) an organic yellow pigment (suitably azo pigment, isoindoline pigment, C.I. pigment yellow 83, 181, 183, particularly C.I. pigment 139) and (B) a condensed azo red pigment (suitably C.I. pigment 144, 166, or 220 with an average major axis of primary particles of 0.05-1.5μm). In an preferred embodiment, this composition contains the component A and (C) an inorganic pigment, at least one of metal oxides selected from oxides of the metal group of titanium, iron and nickel having an refractive index of >=2.0, particularly a composite pigment of the component A and any one from titan white, titan yellow and yellow iron oxide. |
