Abstract
Fourteen pigments based on 2,4-diamino-bis(anthraquinonylamino)-6-phenyl-1,3,5-triazine with chloro, methyl and methoxy substituents on the phenyl ring and with methyl or benzoylamino groups on one or both anthraquinone nuclei have been prepared. The shades of the pigments in PVC films using the CIE system of tri-stimulus values are described and the fastness properties of the pigments have been evaluated in PVC films, oil paints and baking enamels using visual assessment of colour changes. It was found that the type and the position of the substituents have a significant affect on the shade and fastness properties of the pigments studied. Benzoylamino groups and unsymmetrical substitution also have an unfavourable influence on fastness to solvents. Some other possible factors are discussed.
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