Patent ID: 7705069
Filing Date: 2010-04-27
Classification: C09D

Abstract:
1. An ink jet composition comprising: water; a dye; a sulfone humectant selected from the group consisting of dimethylsulfone, methylethylsulfone, diethylsulfone, ethylpropylsulfone, dipropylsulfone, propylbutylsulfone, dibutylsulfone, methylphenylsulfone, sulfolane, methylsulfolane, and dimethylsulfolane; a hydroxyether penetrant; calcium nitrate tetrahydrate and imidazole; and a hyperbranched polyesteramide having one or more carboxylic acid end groups; wherein the hyperbranched polyesteramide is present in an amount of from 1.0 to 2.0 weight percent of the ink composition; and wherein the dye is present in an amount of 15 weight percent of the ink composition.