Removable ink composition and process for removing said ink composition from printed articles

摘要

A removable ink composition comprising (A) a urethane resin and/or an acrylic resin and (B) one or more substances selected from the group consisting of styrene-acrylic acid copolymers, styrene-maleic acid resins, rosin-maleic acid resins and phenol resins as main components of a vehicle and a process for removing an ink composition from printed articles which comprises treating articles printed with this ink composition with an aqueous alkali solution. Prints of the above ink composition on plastic films and plastic containers can be removed and decolorized in a short time by treating the ink composition with a dilute aqueous alkali solution having a concentration of 1 to 3%.