Abstract:
A metal chelated dyestuff for inkjet recording is described, which is a water soluble azo metal chelated compound formed from an azo compound represented by the following general formula (1) and a metal element and is good at the clearness of color tone, light resistance, indoor discoloring and fading property, solubility, storage stability, and the like.
Abstract:
The present invention provides a dyestuff good at the clearness of color tone, light resistance, indoor discoloring and fading property, solubility, storage stability, and the like, when the dyestuff is used as a water soluble dyestuff for inkjet recording. That is, a metal chelated dyestuff for inkjet recording which is a water soluble azo metal chelated compound formed from an azo compound represented by the following general formula (1) and a metal element. 1 (where general formula (1) represents an azo dyestuff compound having at least one or more hydrophilic group in a molecule, X1 represents plural atoms required for forming at least one 5- to 7-membered heterocyclic ring, the heterocyclic ring containing X1 being a heterocyclic ring other than a pyridine ring. The heterocyclic ring containing Xi may have substituent(s) on the heterocyclic ring, the substituent(s) on the heterocyclic ring may form a condensed ring through further condensation. The condensed heterocyclic ring containing X1 may be substituted. Ar1 represents naphthyl group having a chelating group.)
Abstract:
The invention relates to inks comprising a liquid medium and a compound of Formula (1): wherein: A and E are each independently optionally substituted phenylene or naphthylene groups; each M independently is a metal selected from Fe, Co, Cr, Cu, Ni, Zn, Al or Ti; and wherein the liquid medium comprises water and an organic solvent. The invention also relates to compounds of Formula (1) with the proviso that the optional substituents on A and E are not quaternary ammonium groups, to processes for making the same and processes for printing, e.g. ink-jet printing, using the ink.