| 摘要 |
PURPOSE:To obtain the subject composition capable of completely eliminating small bubbles generated in a subsidiary ink chamber of a writing utensil having a slide plug by adding a specific compound such as L-ascorbic acid to a composition composed of water, dye, etc. CONSTITUTION:The objective composition is produced by adding e.g. 0.5-1wt.% of one or more kinds of substances selected from L-ascorbic acid, ascorbic acid isomer and ascorbic acid derivative to a composition containing water and a dye as essential components and a humectant and a surfactant added to the composition as arbitrary components. |
