Manufacture of copper phthalocyanine pigment via aqueous milling

Details Manufacture of copper phthalocyanine pigment via aqueous milling Manufacture of copper phthalocyanine pigment via aqueous milling

1976-04-07

1977-05-17

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09B 4704

Patent

active

040241548

ABSTRACT:
Improved process for converting copper phthalocyanine to pigmentary form by dry milling the copper phthalocyanine, contacting the dry-milled copper phthalocyanine with an organic liquid in water emulsion, and recovering the pigmentary copper phthalocyanine. The improvement resides in the use of at least one aliphatic hydrocarbon derived from petroleum as the organic liquid. The pigmentary copper phthalocyanine which results from the improved process exhibits superior tinctorial properties and is especially useful in coating compositions requiring high quality pigment.

REFERENCES:
patent: 2857400 (1958-10-01), Cooper
patent: 3017414 (1962-01-01), Minnich et al.
patent: 3758321 (1973-09-01), Santimauro et al.
patent: 3801591 (1974-04-01), Jackson

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