| 摘要 |
PURPOSE:To improve the inking performance of a printing ink and printing resistance and to prevent stains due to rapid development or the like by using a polymer having phenolic hydroxyl groups and alcoholic hydroxyl groups each in a specified range. CONSTITUTION:The polymer to be used has in the molecular structure, repeating units derived from a monomer having phenolic hydroxyl groups, preferably, embodied by N-(4-hydroxyphenyl)-(meth)acrylamide, preferably, in an amount of 6-15mol%, a monomer having alcoholic hydroxyl groups, preferably, embodied by 2-hydroxyethyl (meth)-acrylate, preferably, in an amount of 15-60mol%, and a monomer having cyano groups on the side chains, preferably, such as acrylonitrile or methacrylonitrile. |
