Water-soluble azo compound or salt thereof, ink and recording medium

Patent metadata

Field	Value
Publication number	US-11512203-B2
Application number	US-201716336826-A
Country	US
Kind code	B2
Filing date	Oct 20, 2017
Priority date	Oct 31, 2016
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

A compound represented by formula (1) or a salt thereof, and an ink including the same. In formula (1), each Q independently represents a halogen atom; R 11 and R 12 independently represent an alkyl group substituted by an ionic hydrophilic group; and A 1 represents a C1-C3 alkoxy-substituted alkylamino group

First claim

The invention claimed is:

1. A compound represented by the following formula (1) or (2) or a salt thereof:

wherein, each Q independently represents a halogen atom, each R 11 and R 12 independently represents an alkyl group substituted with an ionic hydrophilic group, and A 1 is a group represented by the following formula (A 1-1), a group represented by the following formula (A1-2), a C1-C3 alkoxy-substituted alkylamino group, a C2-C6 alkyl-monosubstituted amino group having two or more hydroxy groups, a group represented by the following formula (A1-3), a group represented by the following formula (A1-4), or a cyclic amine group,

wherein, R A11 represents a branched alkylene group, and the symbol “*” represents a position of attachment to a triazine ring,

wherein, n represents an integer of 1 to 6, and the symbol “*” represents a position of attachment to the triazine ring,

wherein, m represents an integer of 1 to 6, n represents an integer of 1 to 5, and the symbol “*” represents a position of attachment to the triazine ring,

wherein, n represents an integer of 2 to 6, and the symbol “*” represents a position of attachment to the triazine ring,

wherein, each Q 21 to Q 24 independently represents a halogen atom, and each R 21 to R 24 independently represents an alkyl group substituted with an ionic hydrophilic group, and A 2 represents a divalent group,
wherein the compound represented by the formula (1) is represented by any of the following formulae (1-11) to (1-15):

2. An ink comprising the compound or a salt thereof according to claim 1 .

3. The ink according to claim 2 , further comprising a water-soluble organic solvent.

4. An ink-jet recording method, comprising discharging a droplet of the ink according to claim 2 in response to a recording signal to allow for attachment to a recording medium.

5. The inkjet recording method according to claim 4 , wherein the recording medium is plain paper or a sheet having an ink receiving layer.

6. A recording medium to which the compound or a salt thereof according to claim 1 is attached.

7. An ink-jet printer loaded with a container containing the ink according to claim 2 .

8. An ink-jet printer loaded with a container containing the ink according to claim 3 .

Assignees

• Nippon Kayaku Kk

Inventors

• Nagatsuka Shinya
• Iino Taku
• Muto Hitomi

Classifications

• C07D251/70

  Other substituted melamines · CPC title

• C09D11/328

  characterised by dyes · CPC title

• C09B43/16 Primary

  linking amino-azo or cyanuric acid residues · CPC title

• B41M5/0023

  Digital printing methods characterised by the inks used (inks per se C09D11/00) · CPC title

• C09D11/36

  based on non-aqueous solvents · CPC title