Ink set
US-2020239721-A1 · Jul 30, 2020 · US
Aqueous inkjet ink composition, printed matter, and inkjet printing method
US12497526B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12497526-B2 |
| Application number | US-202017310442-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 17, 2020 |
| Priority date | Apr 19, 2019 |
| Publication date | Dec 16, 2025 |
| Grant date | Dec 16, 2025 |
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Abstract
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An aqueous inkjet ink composition including a pigment, an alkali-soluble resin, a surfactant, a water-soluble solvent, and water. The water-soluble solvent contains a solvent A having a boiling point of 100° C. or more and 200° C. or less at 1 atm and 4 or less carbon atoms and 2 or more hydroxy groups in a molecule, and a solvent B having a boiling point of 100° C. or more and 200° C. or less at 1 atm and 4 or more and 10 or less carbon atoms, 1 or less hydroxy groups, and 1 or more methoxy groups in a molecule, and the aqueous inkjet ink composition has a total percentage of the solvent a and the solvent b of 20% by mass or more and 50% by mass or less. The aqueous inkjet ink composition has good storage stability, ejection stability, and drying property of the coating film.
First claim
Opening claim text (preview).
The invention claimed is: 1 . An aqueous inkjet ink composition, comprising: a pigment; an alkali-soluble resin; a surfactant; a water-soluble solvent; and water, wherein a glass transition temperature of the alkali-soluble resin is 0° C. or more and 100° C. or less, an acid value of the alkali-soluble resin is 40 mgKOH/g or more and 300 mgKOH/g or less, and the alkali-soluble resin is an acrylic copolymer resin comprised of alkyl ester monomer units each having 8 or more carbon atoms as a structural unit, wherein the water-soluble solvent contains a solvent A selected from the group consisting of propylene glycol and 1,2-butanediol, and a solvent B selected from the group consisting of dipropylene glycol dimethyl ether and 3-methoxy-3-methyl-1-butanol, wherein the total percentage of the solvent A and the solvent B in the water-soluble solvent is 70% by mass or more, wherein a mass ratio of the solvent A to the solvent B (solvent A/solvent B) of 0.8 or more and 3 or less, and wherein the aqueous inkjet ink composition has a total percentage of the solvent A and the solvent B of 20% by mass or more and 50% by mass or less. 2 . A printed matter obtained by performing printing using the aqueous inkjet ink composition according to claim 1 . 3 . An inkjet printing method, comprising printing an object to be printed on a non-absorbent print medium using the aqueous inkjet ink composition according to claim 1 . 4 . The aqueous inkjet ink composition according to claim 1 , wherein the total percentage of the solvent A and the solvent B in the water-soluble solvent is 80% by mass or more. 5 . The aqueous inkjet ink composition according to claim 1 , wherein the total percentage of the solvent A and the solvent B in the water-soluble solvent is 85% by mass or more. 6 . The aqueous inkjet ink composition according to claim 1 , wherein the total percentage of the solvent A and the solvent B in the water-soluble solvent is 90% by mass or more. 7 . The aqueous inkjet ink composition according to claim 1 , wherein the total percentage of the solvent A and the solvent B in the water-soluble solvent is 95% by mass or more. 8 . The aqueous inkjet ink composition according to claim 1 , wherein the pigment is selected from the group consisting of a yellow pigment, magenta pigment, cyan pigment, black pigment and white pigment. 9 . The aqueous inkjet ink composition according to claim 1 , wherein the surfactant is selected from the group consisting of a nonionic surfactant, a cationic surfactant, an anionic surfactant and a betaine surfactant.
Assignees
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Classifications
containing carbon black · CPC title
characterised by the solvent · CPC title
Ethers; Acetals; Ketals; Ortho-esters · CPC title
Polyhydroxylic alcohols · CPC title
from unsaturated acids or derivatives thereof · CPC title
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- What does patent US12497526B2 cover?
- An aqueous inkjet ink composition including a pigment, an alkali-soluble resin, a surfactant, a water-soluble solvent, and water. The water-soluble solvent contains a solvent A having a boiling point of 100° C. or more and 200° C. or less at 1 atm and 4 or less carbon atoms and 2 or more hydroxy groups in a molecule, and a solvent B having a boiling point of 100° C. or more and 200° C. or less …
- Who is the assignee on this patent?
- Sakata Inx Corp
- What technology area does this patent fall under?
- Primary CPC classification C09D11/322. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 16 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 9 related publications on this page (citations in our corpus or others sharing the same primary CPC).