Patent ID: 7435292
Filing Date: 2008-10-14
Classification: C09D

Abstract:
1. An ink composition consisting essentially of at least water, at least one member selected from the group consisting of a compound represented by formula (1) shown below and a salt thereof, and at least one member selected from the group consisting of an aromatic compound having a carboxyl group and a salt thereof: wherein A represents a residue of a 5-membered heterocyclic diazo component A-NH 2 ; B 1 and B 2 each represents —CR 1 ═ or —CR 2 ═, or either one of B 1 and B 2 represents a nitrogen atom and the other represents —CR 1 ═ or —CR 2 ═; R 5 and R 6 each independently represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group or a sulfamoyl group, and each group may further have a substituent; G, R 1 and R 2 each independently represents a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, a heterocyclic group, a cyano group, a carboxyl group, a carbamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an acyl group, a hydroxy group, an alkoxy group, an aryloxy group, a silyloxy group, an acyloxy group, a carbamoyloxy group, a heterocyclic oxy group, an alkoxycarbonyloxy group, an aryloxycarbonyloxy group, an amino group substituted by an alkyl, aryl or heterocyclic group, an acylamino group, a ureido group, a sulfamoylamino group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, an alkylsulfonylamino group, an arylsulfonylamino group, a nitro group, an alkylthio group, an arylthio group, an alkylsulfonyl group, an arylsulfonyl group, an alkyl-sulfinyl group, an arylsulfinyl group, a sulfamoyl group, a sulfo group or a heterocyclic thio group, and each group may be further substituted; and R 1 and R 5 , or R 5 and R 6 may combine to form a 5- or 6-membered ring.