Patent ID: 6790879
Filing Date: 2004-09-14
Classification: C09D

Abstract:
A jet printing ink comprising a dye and an aqueous medium, which further comprises glycerol and a basic polymer having a side-chain containing 1-imidazolyl, said dye being dissolved in the aqueous medium, wherein the basic polymer is contained in an amount of 0.1 to 50 weight % and the ink has a viscosity of 50 cp or lower at 25Â° C., and wherein the dye is an azomethine dye of the following formula (III) or an azo dye of the following formula (V) or mixtures thereof: in which each of R1 and R3 independently is a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a heterocyclic group, an alkoxy group, an aryloxy group, cyano, amido, sulfonamido, ureido, an alkoxycarbonylamino group, an alkylthio group, an arylthio group, an alkoxycarbonyl group, a carbamoyl group, a sulfamoyl group, a sulfonyl group, an acyl group, an amino group, or an alkylamino group; m is 0, 1, 2, 3, or 4; each of X, Y and Z independently is &boxH;Nâ€” or &boxH;CR2â€”, in which R2 is a hydrogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a heterocyclic group, an alkoxy group, or an aryloxy group; in the case that both of X and Y are &boxH;CR2â€”, these two R2 can be combined to form a ring; M is a hydrogen atom, a dissociated inorganic base, a primary amine, a secondary amine, or a tertiary amine; each of R6, R7, R8 and R9 independently is a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, a heterocyclic group, cyano, hydroxyl, nitro, amino, an alkylamino, an alkoxy group, an aryloxy group, amido, an arylamino group, ureido, sulfamoylamino, an alkylthio group, an alkoxycarbonyl group, a heterocyclic ring-oxy group, an azo group, an acyloxy group, a carbamoyloxy group, a silyloxy group, an aryloxycarbonyl group, an aryloxycarbonylamino group, an imido group, a heterocyclic ring-thio group, sulfinyl, phosphoryl, an acyl group, carboxyl or sulfo; otherwise R8 and R9 are combined to form an aromatic ring or a heterocyclic ring; and R10 is an unsaturated heterocyclic ring.