| abstract |
An ink composition for a ballpoint pen that does not show through a handwriting and has excellent water resistance and excellent writing feeling. An oil component comprising an oil-soluble dye as a colorant and an organic solvent for dissolving the dye, a polyglycerol fatty acid ester having an HLB of 8 or less, a fatty acid dimethylaminopropylamide having 8 or more carbon atoms, and / or Alternatively, it is emulsified and dispersed in water with fatty acid diethylaminoethylamide and an organic acid having 3 to 6 carbon atoms. [Selection figure] None |