Aqueous ink composition for writing instruments
AssigneeMitsubishi Pencil Company, Limited
InventorHisato Haga
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Abstract
Provided is an aqueous ink composition for a writing instrument which is excellent in a drying property of drawn lines and a low temperature stability of the ink while inhibiting the pen tip from drying and which prevents the drawn lines from causing feathering and strike-through. The aqueous ink composition for a writing instrument described above contains at least a colorant, trimethylglycine, pentaerythritol, 10% by mass or less of a water-soluble organic solvent and water.
Claims2
An aqueous ink composition for a writing instrument containing at least a colorant, 1.5 to 11% by mass of trimethylglycine, 1.5 to 5.5% by mass of pentaerythritol, 10% by mass or less of a water-soluble organic solvent, based on a total amount of the ink composition, and water.
Dependencies are inferred from the claim text.