ELECTRON BEAM-CURABLE INKJET INKS AND USE THEREOF IN INKJET PRINTING METHODS

摘要

An inkjet ink which is electron beam curable includes 10 to 40 wt.-% of at least one oligomer based on a total weight of the inkjet ink, 5 to 25 wt.-% of at least one reactive thinner based on the total weight of the inkjet ink, 25 to 84 wt.-% of a solvent mixture comprising at least two solvents based on the total weight of the inkjet ink, and 1 to 15 wt.-% of at least one pigment based on the total weight of the inkjet ink. The at least two solvents have a boiling point of from 50 to 300° C., a dielectricity constant of from 5 to 20, and an evaporation rate of 3 to 5000. The evaporation rate of the at least two solvents differs by a factor of from 2 to 10. The inkjet ink is free from photoinitiators.