Water-resistant ink composition and process for preparation

摘要

A water-resistant ink composition contains water, an anionic dye and a water-resistance modifier which contains as an effective component a sparingly water-soluble compound comprising at least one oleophilic group selected from an aromatic ring and an aliphatic hydrocarbon having 6 - 12 carbon atoms, and at least one hydrophilic group having at least one of O, N and S atoms.