Aqueous ink
OwnerKatsuhiro Hayashi, Keiji Maeda +2inventors
InventorsKatsuhiro Hayashi, Keiji Maeda, Akihiro Gotoh, Yoshio Mori
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Abstract
The present invention relates to an aqueous ink containing a dispersant composed of a crosslinked copolymer which is excellent in dispersibility of a colorant such as a pigment and is capable of stably maintaining the dispersed state in an aqueous medium for a long period of time. Specifically, it is an aqueous ink containing a dispersant, a colorant, and an aqueous medium, the dispersant being composed of a crosslinked copolymer containing (A) a crosslinkable monomer, (B) an aromatic group-containing monomer, and (C) an ionic monomer as essential constituting components.
Claims7
An aqueous ink comprising a dispersant, a colorant, and an aqueous medium, wherein the dispersant is a crosslinked copolymer having a weight average molecular weight of 1,000 to 100,000 and containing (A) a crosslinkable monomer having two or more vinyl groups in one molecule, (B) an aromatic group-containing monomer, and (C) an ionic monomer.
Dependencies are inferred from the claim text.