| 摘要 |
<p>PURPOSE:To make it possible to form a printing ink composition excellent in oil resistance and alkali resistance and excellent in adhesiveness to, especially, a polypropylene film, by using a polyurethane resin prepared by using a specified polymer diol component as the principal binder. CONSTITUTION:This printing ink composition comprises an organic solvent- soluble polyurethane resin obtained by reacting a polymer diol with an organic diisocyanate and a chain extender as the principal binder, wherein said polymer diol component is one containing a polymer diol (A) of a number-average MW of 500-4000, having units of formula I and/or formula II, a polyoxyalkylenediol (B) of a number-average MW of 300-5000 and/or an active hydrogen group- containing diene polymer (C) of a number-average MW of 300-5000 in an A to (B+C) weight ratio of 90/10-30/70.</p> |
