Patent ID: 6737517
Filing Date: 2004-05-18
Classification: C09B,C09D

Abstract:
A metal chelated azo dyestuff for inkjet recording characterized in that its free acid form is represented by the following general formula (1): (wherein the general formula (1) represents a compound having at least one or more hydrophilic group per molecule; M represents an arbitrary metal; A, B and C each independently represents an aromatic ring which may have arbitrary substituents; D represents an aromatic ring which may have arbitrary substituents other than azo group; m represents an integer of 0 to 1; n represents an integer of from 0 to 3; p represents an integer of from 0 to 2; q represents an integer of from 1 to 3, with the proviso that if there are a plurality of B's, they may be the same or different; R1 and R2 each independently represents hydrogen atom or arbitrary substituent; M can take tridentate or higher coordination in which M may take arbitrary ligand-to-metal coordination at arbitrary substituent or bond in the general formula (1) or with arbitrary ligands; and a metal ion may be further coordinated to A and B, B and B which are adjacent to each other with an azo group interposed therebetween if there are a plurality of B's or B and C in the form of â€”Oâ€”Mâ€”Oâ€”), wherein when B is phenylene, the phenylene is substituted by at least one substituent selected from the group consisting of halogen atom, phosphono group, carboxyl group, hydroxyl group, nitro group, alkyl group which may be substituted, alkoxyl group which may be substituted, amino group which may be substituted, acylamino group which may be substituted and sulfonylamino group which may be substituted; and when D is a naphthalene ring, m is 0, and n and p are each 1, (NR1R2)is not acylamino.