Phthalocyanine colorant and use thereof for ink-jet printing

Compositions: coating or plastic – Coating or plastic compositions – Marking

Reexamination Certificate

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Details

C106S031490, C540S126000, C540S131000, C540S136000

Reexamination Certificate

active

07419537

ABSTRACT:
The present invention relates to a phthalocyanine colorant characterized in that it has, as substituents, at least one unsubstituted sulfamoyl group and at least one substituted sulfamoyl group, the total number of these groups being 2 to 4, the substituent on the substituted sulfamoyl group has a substituted triazinyl group bonded thereto through a crosslinking group, and the unsubstituted sulfamoyl group and the substituted sulfamoyl group are bonded to the phthalocyanine ring at the β-position. Said phthalocyanine colorant is suitable for use in an ink, especially a cyan ink, for an ink-jet printer. A printed matter obtained by printing with said ink is excellent in light fastness, ozone fastness and moisture fastness.

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