| 摘要 |
PROBLEM TO BE SOLVED: To provide a printing ink that includes alcohol as a medium as a main component, and is excellent in dispersibility and storage stability of a color agent, and further excellent in remelting at long run.SOLUTION: An alcohol-based printing ink composition includes: a polyurethaneurea resin (D) that is obtained by reacting a polyol (A), a diisocyanate (B), and a chain extender (C); a color agent (E); and a medium, and the alcohol-based printing ink composition is characterized in that the polyol (A) includes a castor oil polyol (A1) and a dimer diol (A2), and a ratio of an alcohol (F) is at least 50% by weight in the sum 100% by weight of the medium. |
