| abstract |
Azo dyes of Formula (1) have utility as dyes for ink-jet printing, where Formula (1) represents:which comprises any suitable form of the compound: such as salt; stereoisomer, zwitterion, polymorph, complex, isotopic form, combinations thereof in the same species and mixtures thereof; where: n represents from 1 to 5 inclusive; R1, R1B, R4 and R4B each independently comprises at least one of the following substituents, optionally substituted:H, C1-8alkyl; C1-8,alkoxy; -NHCOH, C1-8alkylcarbonylamino; and -NHCONR5R6where R5 and R6 each independently comprises at least one of thefollowing substituents: H, C1-8alkyl and aryl; andR2 and R3 each independently comprises at least one of the following substituents, optionally substituted:H; C1-8alkoxy; -NHC1-8alkyleneOH, -SC1-8-alkyleneSO3H;-NHC1-8alkyleneN(C1-8alkyl)2;where X comprises one of the following: -NHC1-8alkylene;-NHphenylSO2NHC1-8alkylene; and a direct link,where X comprises one of the following: -NHC1-8alkylene;-NHphenylSO2NHC1-8alkylene; and a direct link;a moiety of Formula (2) where m and p is each independently from 0 to 5 inclusive, provided that(m+p) is from 1 to 5 inclusive; andR1A, R2A, R4A and R4C each independently comprises at least one of thoseoptionally substituted substituents as defined herein for R1, R2, R4 and R4Brespectively; andany other suitable labile or non-labile substituent not mentioned above; where the optional substituents herein comprise: C1-4alkyl (optionally substituted with at least one halo)., C1-4alkoxy (optionally substituted with at least one halo), carboxy, sulpho, hydroxy, amino, mercapto, cyano, nitro and halo. |