| 摘要 |
<p>PURPOSE:To provide an offset printing ink composition for the use together with wetting water, containing an organopolysiloxane having hydrophilic group, giving a sufficient density to the image area scarcely causing the staining and emulsification in the non-image area, and having high tolerance to the change in conditions. CONSTITUTION:The objective ink composition contains preferably 3-50wt% of an organopolysiloxane having at least one hydrophilic group (especially preferably OH group originated from the polyol compound such as ethylene glycol) [e.g. the compound of formula I (m is average value of 0-100; n is average value of 1-50; R is substituent group such as alkyl, aromatic group, etc.; G is hydrophilic group or a group containing the same), formula II, formula III (l is average value of 0-1), formula IV, etc.].</p> |
