Aqueous metallic ink composition
AssigneeSakura Color Products Corporation
InventorsYasuyuki Yoshimura, Naoshi Murata, Kenichi Shibuya, Kaoru Matsumoto
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Abstract
The present invention relates to an aqueous metallic ink composition having utility in ink for writing instruments, for printing, for coating, and the like. The composition includes a metallic powder pigment, a colorant, water, and a water-soluble organic solvent, and further includes a natural polysaccharide and at least one compound selected from cellulose derivatives, a cyclodextrin, cyclodextrin derivatives, a water-soluble soy polysaccharide, and water-soluble soy polysaccharide derivatives. In case that an anionic polymer is added as a pigment dispersant into the aqueous metallic pigment composition, the pH value is adjusted to 8.0-10.
Claims16
An aqueous metallic ink composition comprising a metallic powder pigment, a colorant, water, a water-soluble organic solvent, a natural polysaccharide and at least one compound selected from the group consisting of cellulose derivatives, cyclodextrin, cyclodextrin derivatives, a water-soluble soy polysaccharide, water-soluble soy polysaccharide derivatives, and mixtures thereof.
An aqueous metallic ink composition comprising a metallic powder pigment, a pigment and an anionic polymer, and the pH value of the ink composition is maintained within the range of 8.0 to 10.
An aqueous metallic ink composition prepared by mixing a metallic powder pigment, a colorant, water, water-soluble organic solvent, a natural polysaccharide and at least one compound selected from the group consisting of cellulose derivatives, cyclodextrin, cyclodextrin derivatives, a water-soluble soy polysaccharide, water-soluble soy polysaccharide derivatives, and mixtures thereof.
Dependencies are inferred from the claim text.