| 摘要 |
<p>PURPOSE:To obtain the title ink which is free from blotting and failure in sucking while having suitable lubricity, and shows an improvement in corrosiveness, by incorporating a specified arylsulfonamidocarboxylic acid or its salt into a water-base ink containing a coloring agent and a lubricant. CONSTITUTION:An ink is prepared by mixing a water-base ball point ink containing a coloring agent and a lubricant with at least one lubricant selected from an arylsulfonamidocarboxylic acid and/or salt thereof shown by the formula, wherein phi is unsubstituted or substituted aryl; M is H, ammonium, alkylammonium an alkali metal or an amine; n is 1-4. The effective amount of the lubricant to be mixed is 0.01-10wt.%, preferably 0.05-5wt.%, based on the total ink. If this amount is less than 0.01wt.%, little lubricating effect can be obtained; if above 10wt.%, the viscosity of an ink will be so high that the fluidity of an ink in the ink guide will be reduced and the ink supply in high-speed writing will be prevented.</p> |
