2,9-Dichloroquinacridone pigment compositions

Compositions: coating or plastic – Materials or ingredients


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260279QA, 106300, C09B 4800




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.

patent: 3157659 (1964-11-01), Deuschel et al.
patent: 3577379 (1971-05-01), Sandler et al.
Tagaki et al., Chemical Abstracts, vol. 70, 38,875x (1969).


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