Process for the purification of crude polyhalo copper phthalocya

Details Process for the purification of crude polyhalo copper phthalocya Process for the purification of crude polyhalo copper phthalocya

1975-08-15

1976-08-10

Moatz, Harry I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 4704

Patent

active

039741770

ABSTRACT:
Polyhalo copper phthalocyanines are purified in concentrated sulfuric acid under addition of peroxo compounds including addition compounds of hydrogen peroxide. The products are useful as pigments having very pure green shades and good fastness properties.

REFERENCES:
pederson, J. Org. Chem., pp. 127-132, (1957), (vol. 22).

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