| 摘要 |
The disclosure teaches the preparation of a unique 2,9-dichloroquinacridone which provides a heat stable, highly dispersible magenta colorant suitable for use in plastics and the like where heat stability and lightfastness are necessary. The disclosure further teaches a pigmentary composition wherein the unique 2,9-dichloroquinacridone is combined with molybdate orange pigment to give a true red pigment of superior intensity, lightfastness and heat stability.
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