| 摘要 |
<p>PURPOSE:To provide the oily marking ink composition capable of allowing a nib to stand in air in a state in which the cap is removed from a writing utensil without evaporating an organic solvent from the top part of the nib, causing blur of handwriting or making it impossible to write. CONSTITUTION:This oily marking ink composition is composed mainly of an oilsoluble dye, an organic solvent and a resin soluble in the organic solvent and contains one or more kinds of surfactants selected from a polyoxyethylene sorbitan fatty acid ester and/or a polyoxyethylene sorbitol fatty acid ester, a polyethylene glycol fatty acid ester, a polyoxyethylene alkyl ether, a polyoxyethylene polyoxypropylene alkyl ether, a polyoxyethylene alkylphenyl ether, a polyoxyethylene castor oil-hardened castor oil derivative, a polyoxyethylene alkylamine and an ethylene oxide-added fatty acid amide in which the number of moles of additional ethylene oxide is >=10.</p> |
