| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithographic printing ink having improved suitability for emulsification and suitability for fast printing such as stability in a printing machine while maintaining ink deposition property, glossiness and drying property as well as decreasing misting, and to provide a production method of a resol (A) having an average number of nuclei of 1.5 to 3.0 to be used for the ink.SOLUTION: A composition for a lithographic printing ink is provided, which uses a varnish containing a rosin-modified phenolic resin using a resol as a part of a raw material. The resol is resol (A) having an average number of nuclei of 1.5 to 3.0. The rosin-modified phenolic resin shows a cloud point of 100 to 210°C by AF-6 solvent.SELECTED DRAWING: None |
