Syntheses and Properties of Finely Powdered Copper Phthalocyanine Pigments Using 1-Amino-3-iminoisoindolenine Nitrate

Abstract

Finely powdered copper phthalocyanines were prepared by the reaction of 1-amino-3-imino isoindolenine nitrate with copper (II) hydroxide. The product was obtained in better yield when the glycerol containing urea was used as a solvent and the temperature of the reaction was maintained at 140°C for a few minutes under vigorous agitation. The product was filtered at 80-90°C, then the solid was washed with dilute hydrochloric acid, dilute sodium hydroxid e solution, hot water, and ethanol successively, and dried at 80°C.
The product is polymorphous metastable α-form with a c haracteristic peak 2 θ = 8.5 ° (d= 10, 40å ) in the X-ray diffraction pattern. A hue of the product is brilliant blue (λd= 475.9 nm)and the particle size of the product is 0.1, -0.5 μm.