Process for preparing an alpha or beta form copper phthalocyanin

Details Process for preparing an alpha or beta form copper phthalocyanin Process for preparing an alpha or beta form copper phthalocyanin

1977-02-15

1978-08-01

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8 1XA, C09D 4704

Patent

active

041042778

ABSTRACT:
A process for preparing an alpha or beta form copper phthalocyanine pigment which comprises dry milling a crude copper phthalocyanine followed by mixing with an aqueous emulsion comprising a liquid amine having from 3 to 20 carbon atoms which is insoluble in water or alkali and soluble in acid and a surfactant which is capable of emulsifying the liquid amine and subsequently acidifying the mixture to dissolve the amine.

REFERENCES:
patent: 1162036 (1969-08-01), Bayer
patent: 2857400 (1958-10-01), Cooper
patent: 3017414 (1962-01-01), Minnich et al.

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