| 摘要 |
<p>PURPOSE:To improve water resistance and workability in plate-making by compounding water, a water-sol. org. solvent, a carbon black dispersed by a water-sol. surfactant, and a specific betaine-type amphoteric acrylic resin. CONSTITUTION:The objective ink is prepd. by compounding 30-90wt.% water, 1-50wt.% water-sol. org. solvent, 2-20wt. % carbon black, a nonionic surfactant having an HLB of 10 or higher in an amt. of 1-25wt.% of the carbon black, and a betaine-type amphoteric acrylic resin of the formula (wherein n and m are each an integer provided n+m=400-450; and R is 1-8C alkyl) in an amt. of 0.5-5wt.% of the pigment.</p> |
