Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1977-03-09
1979-02-27
Dean, R.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
106288Q, 106309, C09B 4704
Patent
active
041419049
ABSTRACT:
Improved process for the preparation of copper phthalocyanine pigment stable to crystallization by grinding a crude copperphthalocyanine and adding a compound stabilizing the pigment against crystallization and derived from phthalocyanine, wherein the improvement comprises dry grinding the crude phthalocyanine in the absence of any mineral substrate and of any crystallizing solvent thereby obtaining a ground phthalocyanine of non-pigmentary or feebly pigmentary character, and treating the said ground phthalocycanine with a crystallizing solvent in the presence of the stabilizing compound at a temperature from ordinary room temperature to the boiling temperature of the solvent, the concentration of the stabilizing compound being from 1% to 25% of the weight of the phthalocyanine; pigmentary compositions in the form of powder or pigmented paste obtained by such a process and compositions containing a stable copper phthalocyanine pigment prepared in accordance with such a process.
REFERENCES:
patent: 3065092 (1962-11-01), Geiger et al.
patent: 3351481 (1967-11-01), Hopmeier et al.
patent: 3589924 (1971-06-01), Giambaluo
patent: 3647496 (1972-03-01), Bagai
patent: 3754955 (1973-08-01), Kienzle et al.
patent: 3758320 (1973-09-01), Flores
patent: 3764361 (1973-10-01), Kienzle et al.
patent: 3767442 (1973-10-01), Kienzle et al.
patent: 3770476 (1973-11-01), McKay
Cabut Louis A.
Hardouin Jean-Claude H. R.
Huille Michel E. A.
Pigasse Daniel
Dean R.
Produits Chimiques Ugine Kuhlmann
Sheehan John P.
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