Synthesis of Metallized Isoindolinone Pigments

Abstract

New metallized isoindolinone pigments were studied. The pigments were efficiently produced by the reaction of bivalent metal salts with the compounds derived from 3, 3, 4, 5, 6, 7-hexachloroisoindoline-1-one and 2-aminopyridines in ethylene glycol or glycerol. Bivalent metal salts such as Co-, Ni-, Cu- and Zn-acetates were adapted for the formation of pigments.
The metal has a great influence on the shade of pigments, and their light-fastness were excellent (grade 7-8 by blue-scale). Each pigment was insoluble in ordinary organic solvents and alkaline solutions but decomposed to tetrachlorophthalimide by strong acids.