| 摘要 |
<p>PURPOSE:A water-based ink for ball-point pen with excellent lubricity and giving a feeling of smoothness in writing, prepd. by additionally compounding a humic acid salt with a conventional ball-point ink compsn. CONSTITUTION:About 1-15wt% water-soluble dye, about 10-40wt% water-soluble org. solvent, about 50-80wt% water, a primary solvent and about 0.01-3wt% humic acid salt, each based on the total wt. of the ink, are mixed and dissolved, if necessary, by heating to obtain a water-based ink for a ball- point pen. A sodium, potassium, ammonium or the ink salt may be used as the humic acid salt.</p> |
