Patent ID: 6827770
Filing Date: 2004-12-07
Classification: C09B,C09D

Abstract:
A metal chelated dyestuff for inkjet recording which is a water soluble azo metal chelated compound formed by an azo-based compound represented by the following general formula (1) having one or more hydrophilic group per molecule and a metal element: wherein X1 represents a chain of a plurality of atoms containing a total of 2 or more hetero atoms of one or more kinds selected from the group consisting of nitrogen atom, oxygen atom and sulfur atom and required to form at least one 5- to 7-membered heterocyclic ring; the heterocyclic ring containing X1 may have substituents thereon; the substituents on the heterocyclic ring may further be condensed to form a condensed ring; the condensed heterocyclic ring containing X1 may be substituted, with the proviso that the heterocyclic ring containing X1 is not a heterocyclic ring represented by the following general formula (2) or (3); and Ar1 represents naphthyl group represented by any one of the following general formulae (4) to (6): wherein R represents hydrogen atom or arbitrary substituent; wherein Y1 represents a chelating group; Z1's represent arbitrary substituents which may be different from each other; and a represents an integer of from 0 to 6.