| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithographic printing ink composition used for lithographic printing, especially to provide an environment-conscious ink for water-less printing in which the content of a volatile organic compound is reduced by making a vegetable oil be a principal component of a solvent component, and which does not discharge dampening water, and further to provide an ink which can strike a balance between scumming resistance and ink wearing property, which are the subject of water-less printing. <P>SOLUTION: The lithographic printing ink composition includes a binder resin, vegetable oils, a paraffinic stock, and a pigment, wherein the rosin-modified phenol resin which has the softening point, the weight-average molecular weight, and the solubility of a fixed range and the paraffinic stock which has the boiling point of a fixed range are used, whereby a water-less ink can be obtained which has good scumming fitness and in which there is little of a volatile organic compound component. <P>COPYRIGHT: (C)2012,JPO&INPIT |
