Water base dual color ink composition and writing utensil using the same

摘要

The invention provides a dual color ink composition which comprises:(a) at least one pigment selected from a pearlescent pigment and a metal powder pigment;(b) water;(c) at least one water-soluble organic solvent selected from alcohols, glycols and glycol ethers, any of which have a branched hydrophobic group;(d) a water-soluble dye; and(e) a modified starch as a water-soluble fixing agent.