| 摘要 |
PROBLEM TO BE SOLVED: To provide a binder for printing ink which is soluble in an alcoholic solvent and gives good blocking resistance, gloss, and adhesion.SOLUTION: The binder for printing ink comprises a polyurethane resin (U) obtained by reacting an active hydrogen component (A) with an organic polyisocyanate component (B). The active hydrogen component (A) contains a compound (a1) represented by formula (1). [Rand Rare each independently a C2-10 alkylene group, and X is a group having an ether bond, an ester bond, and/or an amide bond.] |
