Process for making a non-aqueous dispersion of a copper...

Details Process for making a non-aqueous dispersion of a copper... Process for making a non-aqueous dispersion of a copper...

C - Chemistry, Metallurgy

09

B

C09B 47/04 (2006.01) C09B 67/00 (2006.01) C09B 67/04 (2006.01) C09B 67/12 (2006.01) C09B 67/22 (2006.01) C09D 11/02 (2006.01)

Patent

CA 2179749

A method of preparing a non-aqueous dispersion of copper phthalocyanine (CuPc) which comprises milling crude CuPc in a high boiling liquid at a temperature from 50 to 150°C in the presence of a polyester amine or polyesterammonium salt and a CuPc fluidising agent. Preferred polyesterammonium salt is obtainable by reacting polyhydroxystearic acid with 3-dimethylaminopropylamine quaternised with dimethylsulphate.

Ce procédé de préparation d'une dispersion non aqueuse de phtalocyanine de cuivre (CuPc) consiste à broyer du CuPc brut dans un liquide à haut point d'ébullition, à une température comprise entre 50 et 150 ~C, en présence d'une amine polyester ou d'un sel de polyesterammonium et d'un agent de fluidisation du CuPc. On obtient le sel de polyesterammonium préféré en faisant réagir de l'acide polyhydroxystéarique avec du 3-diméthylamino-propylamine quaternisé avec du diméthylsulfate.

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