Phthalocyanine dyes suitable for use in offset inks

Details Phthalocyanine dyes suitable for use in offset inks Phthalocyanine dyes suitable for use in offset inks

C - Chemistry, Metallurgy

09

B

C09B 47/04 (2006.01) C07D 487/22 (2006.01) C09D 11/02 (2006.01) G06F 17/30 (2006.01)

Patent

CA 2662727

An IR-absorbing phthalocyanine dye suitable for formulation in a solvent-based or oil-based ink vehicle is disclosed. The phthalocyanine comprises one or more sulfonate groups and a counterion of at least one sulfonate group is a phosphonium cation. Phosphonium salts of sulfonated gallium naphthalocyanines exemplify such dyes.

La présente invention concerne un colorant de type phtalocyanine absorbant l'IR approprié pour une formulation dans un véhicule de l'encre à base de solvant ou à base d'huile. La phtalocyanine comprend un ou plusieurs groupes sulfonate et un contre-ion d'au moins un groupe sulfonate est un cation phosphonium. Les sels de phosphonium de gallium-naphtalocyanines sulfonées sont des exemples de ces colorants. (I).

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