INK COMPOSITION FOR OFFSET PRINTING

摘要

An offset printing ink composition is provided which has further improved drying characteristics to satisfy performances required for offset printing, such as anti-blocking properties including primary blocking resistance and secondary blocking resistance, while aiming at compatibility with the environment. The ink composition comprises mainly a coloring agent, a binder resin and a solvent containing a vegetable oil component and is characterized by further containing as a drying characteristic improver at least one member selected from the group consisting of (A) a polymer which is obtained by polymerizing at least one of olefin monomers and diene monomers, and has a solubility parameter of less than 19 (MPa)<1/2> and is compatible with the solvent; and (B) a liquid paraffin, wherein the total amount of the improver is 0.1 to 10 % by weight in the ink composition.