Process for preparing pigmentary .beta.-copper phthalocyanine

Details Process for preparing pigmentary .beta.-copper phthalocyanine Process for preparing pigmentary .beta.-copper phthalocyanine

1975-05-02

1976-05-04

Moatz, Harry I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 4702

Patent

active

039547957

ABSTRACT:
Improved process for the preparation of copper phthalocyanine in pigmentary form by viscous salt milling crude copper phthalocyanine in the presence of an organic conditioning agent and FeCl.sub.3 followed by acid extraction. This process requires substantially less energy than conventional viscous salt milling and produces a highly dispersible, very strong .beta.-phase copper phthalocyanine which is useful as a pigment in a variety of applications.

REFERENCES:
patent: 2982666 (1961-05-01), Chun et al.

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