Effect of some metal phthalocyanines and biphthalocyanines on the properties of natural rubber

Phthalocyanine compounds have their importance due to the massive utilization in various fields. Phthalocyanine blues and greens are used as pigments because of their outstanding stability to light, heat, acids and alkalis, and of course, their insolubility in water and organic solvents. They are used in printing inks, paints and plastics. Phthalocyanines are also used as catalyst in suffer oxidations in the petroleum industry and find use in lasers, medicines, photography, as photo‐ and semiconductors, in xerography and as indicators.