Ink-jet ink
AssigneeNippon Shokubai Co., Ltd.
InventorsKeiichi Nakamoto, Takumi Ito, Yoshimine Sakamoto
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Abstract
The ink-jet ink of the present invention comprises a solvent S having an SP value of 9.1-9.4, resin emulsion particles and water. It is preferable that the resin emulsion particles contain a (meth)acrylic polymer. It is also preferable that the resin emulsion particles contain a structural unit derived from styrene. It is also preferable that the solvent S is tripropylene glycol monomethyl ether and/or monoethylene glycol monoisopropyl ether.
Claims12
An ink-jet ink comprising a solvent S having an SP value of 9.1 to 9.4, resin emulsion particles, water, another organic solvent having an SP value other than 9.1 to 9.4, and a surfactant of a polyether modified silicone type,
- wherein the SP values are a solubility parameter of Hildebrand,
- wherein said resin emulsion particles contain a (meth) acrylic polymer, and
- wherein said another organic solvent is at least one selected from the group consisting of propylene glycol, diethylene glycol, triethylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monoisopropyl ether, diethylene glycol monobutyl ether, and diethylene glycol monoisobutyl ether,
- wherein said resin emulsion particles have been obtained by emulsion-polymerization of a monomer component and a reactive emulsifier, and
- wherein an acid value derived from carboxyl groups of said resin emulsion particles is 0 to 6.
Dependencies are inferred from the claim text.