| 摘要 |
PROBLEM TO BE SOLVED: To provide inkjet ink, a dispersion of which has low viscosity and good stability and can be formed in a short dispersion time and which can form an ink coating film having high fastness (scratch resistance and alcohol resistance) without whitening.SOLUTION: A solvent-based inkjet ink composition comprises at least a pigment, an organic solvent, a binder resin, and a dispersant. The dispersant has a weight average molecular weight (Mw) of 5,000 to 20,000, an acid value (mg KOH/g) of 5 to 20, and an amine value (mg KOH/g) of 20 to 50. Furthermore, with regard to a number average molecular weight (Mn) and the weight average molecular weight (Mw) of the dispersant, Mw/Mn is 2 or less. |
