Process for making a phthalocyanine pigment dispersion

Details Process for making a phthalocyanine pigment dispersion Process for making a phthalocyanine pigment dispersion

C - Chemistry, Metallurgy

09

B

8/50

C09B 67/50 (2006.01) C09B 67/12 (2006.01)

Patent

CA 1314663

PROCESS FOR MAKING A PHTHALOCYANINE PIGMENT DISPERSION Abstract of the Disclosure A process for making an aqueous pigment dispersion comprising substantially 100 percent .beta.-phase, isometric copper phthalocyanine pigment particles is carried out by activating a pigment crude, followed by fine-milling the activated crude in the presence of an emulsion, the fine- milling taking place in a stirring mill. The resulting pigment slurry is then isolated as an aqueous presscake. - 22 -

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