| 摘要 |
<p>PURPOSE:To provide the titled ink which gives sharply outlined handwriting on plastic films without blotting or whitening, by dissolving a water-soluble dye, PVA and a polyoxyethylene alkyl ether sulfate ester salt in an aq. medium. CONSTITUTION:2-15wt% water-soluble acid or direct dye (A) as a colorant, 0.8-5wt% PVA (B) having an average polymn. degree of 1,500 or below and a saponification degree of 70-90mol% as a component for ensuring the spreading of handwriting on the surface of a plastic film, and 0.1-8wt% polyoxyethylene C8-18 alkyl ether sulfate ester salt (C), in which moles of oxyethylene added are 1-10 and cation group is Na, K or ammonium, as a component for wetting the surface of the plastic film and giving sharply outlined handwriting, and dissolved in at least 50wt% aq. medium.</p> |
