Phthalocyanine compounds for ink-jet printing

Abstract

Phthalocyanine compounds of Formula (1) have utility as colorants in inks for ink-jet printing, where Formula (1) represents: which comprises any form of the compound: such as salt; stereoisomer, zwitterion, polymorph, complex, isotopic form, combinations thereof in the same species and mixtures thereof; where: M represents H, metal, halometal, oxymetal and/or hydroxymetal; k is the inverse of half of the valency of M; Pc represents a phthalocyanine nucleus of Formula (2): L represents a linking group comprising an optionally substituted C1-30carbyl; A represents —O—, —S— or —NR3—, where R3 independently comprises H or optionally substituted C1-30carbyl; R1 comprises at least one group independently selected from: an optional substituent and optionally substituted C1-15carbyl; R2 comprises optionally substituted C1-30carbyl that comprises at least one alkyl group substituted by at least one of: hydroxy, carboxy and sulpho; z represents an integer from 0 to 4; w represents an integer from 1 to 5; and the sum of w +z is from 1 to 5; and x and y each independently represent a non-zero number; and the mean of the sum of x +y is from about 1 to about 6; where the optional substituents comprise at least one of: carboxy, sulpho, hydroxy, amino, mercapto, cyano, nitro and halo.

Dependencies are inferred from the claim text.