Abstract:
IN WHICH A is o-phenylene, o-naphthylene or peri-naphthylene which may bear substituents which do not impart solubility in water; X is chloro or bromo; and Y is halogen, phenoxy alkyl or alkoxy of one to four carbon atoms. These dioxazine dyes are pigments and give violet colorations for example in surface coatings or plastics; they have excellent fastness to light, weathering and solvents. The dyes are also stable to high temperature. A dioxazine dye of the formula:
Abstract:
Metal-containing azomethine pigment dyes derived from 1 mole of an o-phenylenediamine and 2 moles of a Beta hydroxynaphthaldehyde which are useful for coloring printing inks, surface coatings, resins and the like.
Abstract:
WHICH IS EMINENTLY SUITABLE AS A PIGMENT, PARTICULARLY FOR USE IN ACRYLIC RESIN COATING COMPOSITIONS, AND WHICH HAS EXCELLENT PROPERTIES OF LIGHT FASTNESS AND RESISTANCE TO WEATHER AND OVERSPRAYING.
Abstract:
Azo pigments having 2,6-dihydroxy-4-methyl-3-cyanopyridine or 2,6-dihydroxy-4-methyl-3-carbamolpyridine as coupling component and a heterocyclic substituted aniline as diazo component. The pigments have the formula IN WHICH R is cyano or carbamoyl; A is an unsubstituted or substituted benzene ring; and B is a heterocyclic ring which is fused with the benzene ring and which contains at least one -NH- and -CO- or at least one -NH-CO- group. Compounds of this formula as pigments are eminently suitable for coloring printing inks, surface coatings and resins.