Process for the production of ink concentrates

Details Process for the production of ink concentrates Process for the production of ink concentrates

C - Chemistry, Metallurgy

09

D

C09D 11/00 (2006.01) C09B 67/00 (2006.01) C09B 67/12 (2006.01) C09D 11/02 (2006.01)

Patent

CA 2190327

1. A process for the preparation of an ink concentrate which comprises (a) milling a crude metal phthalocyanine to reduce the particle size thereof, thereby forming a modified crude metal phthalocyanine and (b) kneading a mixture of the modified crude metal phthalocyanine together with an ink vehicle comprising one or more ink solvents, the metal phthalocyanine being present in an amount of 20 to 80% by weight of the kneaded mixture, to give an ink concentratecontaining the metal phthalocyanine in pigmentary form dispersed in the ink vehicle.

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