IP Library › Granted Patent US 10,858,526
Granted Patent B2
US 10,858,526 · App. 15/897,493 · Granted Dec 8, 2020

Water-based ink composition for ink jet recording and coloring material liquid

Inventor: Hiroshi Ito (Matsumoto, JP)
Assignee: Seiko Epson Corporation
C09D11/38C09D11/03C09D11/324C09D11/328
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Quick Facts
Patent No.
US 10,858,526
App. No.
15/897,493
Granted
Dec 8, 2020
Kind
B2
Abstract

A water-based ink composition for ink jet recording and a coloring material liquid according to an aspect includes at least one selected from the group consisting of vinylphenol and a vinylphenol derivative, a water-soluble organic solvent, and water.

Claims (24)

1. A water-based ink composition for ink jet recording, comprising:

at least one compound selected from the group consisting of p-vinyl phenol, p-hydroxy-2-methylacrylanilide, p-hydroxy cinnamic alcohol, 4-hydroxy cinnamic acid, p-sinapyl alcohol, and coniferyl alcohol;

a water-soluble organic solvent; and

water,

wherein the water-soluble organic solvent is at least one selected from the group consisting of 1,2-pentanediol, 1,2-hexanediol, 1,3-hexanediol, 1,2-heptane diol, 1,2-octanediol, 3-butoxy-1,2-propanediol, 3-pentyloxy-1,2 propanediol, and 3-(hexyloxy)-1,2-propanediol.

2. The water-based ink composition for ink jet recording according to claim 1 , further comprising:

a coloring material,

wherein the coloring material is at least one selected from the group consisting of a pigment and a dye.

3. The water-based ink composition for ink jet recording according to claim 1 ,

wherein the content of the at least one compound is 0.01% by mass or more and 1.0% by mass or less.

4. The water-based ink composition for ink jet recording according to claim 1 ,

wherein the content of water is 60% by mass or more.

5. The water-based ink composition for ink jet recording according to claim 1 ,

wherein the water-soluble organic solvent has a water-octanol partition coefficient (expressed as log P value) of 0.0 or more and 1.5 or less.

6. The water-based ink composition for ink jet recording according to claim 1 ,

wherein the content of the water-soluble organic solvent is 0.5% by mass or more and 15% by mass or less.

7. The water-based ink composition for ink jet recording according to claim 1 ,

wherein a biocidal antibacterial agent or antifungal agent other than the at least one compound is present in an amount of not more than 1% by mass.

8. A coloring material liquid comprising:

at least one compound selected from the group consisting of p-vinyl phenol, p-hydroxy-2-methylacrylanilide, p-hydroxy cinnamic alcohol, 4-hydroxy cinnamic acid, p-sinapyl alcohol, and coniferyl alcohol;

a water-soluble organic solvent;

water; and

a coloring material,

wherein the water-soluble organic solvent is at least one selected from the group consisting of 1,2-pentanediol, 1,2-hexanediol, 1,3-hexanediol, 1,2-heptane diol, 1,2-octanediol, 3-butoxy-1,2-propanediol, 3-pentyloxy-1,2 propanediol, and 3-(hexyloxy)-1,2-propanediol.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 15, 2018
From: ITO, HIROSHI
To: SEIKO EPSON CORPORATION
Reel/Frame 044942/0949 →
Priority Claims (1)
JP 2017-059081 · Mar 24, 2017 · national
Continuity (1)
Related Publication 20180273788A1 · Sep 27, 2018