ALCOHOL-BASED PRINTING INK COMPOSITION

摘要

The present invention relates to an alcohol-based printing ink composition comprising a polyurethane urea resin (D) obtained by reacting a polyol (A), a diisocyanate (B), and a chain extender (C), a coloring agent (E), and a vehicle, wherein the polyol (A) comprises a polyester polyol (AO) having repeating units derived from a saturated hydroxyl carboxylic acid having side chains, and the vehicle of the alcohol-based printing ink composition comprises an alcohol (F) such that the ratio of the alcohol (F) is 50 wt% or more based on a total 100 wt% of the vehicle. Thus, the present invention provides a printing ink that comprises an environmentally-friendly alcohol as a primary component and that has excellent coloring agent dispersibility and shelf life as well as long-term excellent re-solubility.