| abstract |
A water-based ink composition that has almost no volatilization of an organic compound, has excellent water resistance of printed matter, and is suitable for waterless offset printing. In the formula (1) or (1), A is not contained, R is H, B1-6 are each C1-12 alkyl (2), and obtained by polymerizing at least one of them. An aqueous ink composition for waterless offset printing in which the acid group of the obtained acid group-containing acrylic resin and the acid group of the acid group-containing rosin ester resin are neutralized with a basic compound. [Selection figure] None |