Phthalocyanines and their use in ink-jet printing

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

Reexamination Certificate

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C008S638000, C008S661000, C347S100000

Reexamination Certificate

active

07575627

ABSTRACT:
A mixture of dyes of Formula (1) and salts thereof; wherein M is 2H, Si, a metal, an oxymetal group, a hydroxymetal group or a halometal group; Pc represents a phthalocyanine nucleus of formula (2); R1is methyl; R2is H or methyl; R3and R4independently are H or optionally substituted C1-4alkyl; L is a divalent linking group; A and B are independently H or a substituent. x is 0.1 to 3.8; y is 0.1 to 3.8; z is 0.1 to 3.8; the sum of (x+y+z) is 2 to 4; and the substituents, represented by x, y and z, are only attached to a β position on the phthalocyanine ring and the dyes are free from fiber reactive groups. Also compositions, inks, printed material and in-jet processes and cartridges.

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