# US 2020/0399491 A1 · Aqueous ink composition for ink jet textile printing and textile printing method

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- Number: US 2020/0399491 A1
- Document ID: US20200399491A1
- Status: Published application
- Kind: A1
- Application number: 16/904,696
- Filed: 2020-06-18
- Published: 2020-12-24
- Earliest claimed: 2019-06-19
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Yuki WAKUSHIMA; Hidehiko KOMATSU; Hiroaki MARUYAMA
- Web page: https://patentgrep.com/patent/US20200399491A1

## CPC

- C09D 11/328: characterised by dyes
- C09D 11/36: based on non-aqueous solvents
- D06P 1/384: reactive group not directly attached to heterocyclic group
- D06P 1/39: using acid dyes
- D06P 1/6735: {of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341}
- D06P 3/8209: {mixtures of fibres containing amide groups}
- D06P 5/30: Ink jet printing
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- D06P: DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM

## Abstract

An aqueous ink composition for ink jet textile printing contains: lithium ions; sodium ions; and a dye in which a plurality of ligands represented by any of formula (1), formula (2), and formula (3) coordinate to a metal atom.

## Claims

### Claim 1

An aqueous ink composition for ink jet textile printing comprising:
lithium ions;
sodium ions; and
a dye in which a plurality of ligands represented by any of the following formula (1), formula (2), and formula (3) coordinate to a metal atom:
wherein:
X represents a coordinated metal atom;
R1 is selected from H and SO3Z;
a plurality of R1 may be the same or different from each other;
at least one of R1 is SO3Z; and
Z is at least one selected from a hydrogen atom, an alkali metal atom, an alkaline earth atom, and ammonium,
wherein:
X is a coordinated metal atom;
R2, R3, and R4 are each independently selected from H and SO3Z; and
Z is at least one selected from a hydrogen atom, an alkali metal atom, an alkaline earth atom, and ammonium,
wherein:
X is a coordinated metal atom;
R5 is selected from H, NO2, an alkyl group having 1 or more and 3 or less carbon atoms, Cl, and SO3Z;
n is an integer of 1 or more and 4 or less;
when a plurality of R5 exist, a plurality of R5 may be the same or different from each other;
R6 is selected from H, CH3, and SO3Z;
R7 is selected from H, NO2, Cl, and SO3Z;
at least one of R5, R6, and R7 is SO3Z; and
Z is at least one selected from a hydrogen atom, an alkali metal atom, an alkaline earth atom, and ammonium.

### Claim 2 (depends on 1)

The aqueous ink composition for ink jet textile printing according to claim 1, wherein
the dye is selected from: a dye in which two ligands represented by formula (1) coordinate to the metal atom; a dye in which one ligand represented by formula (2) and one ligand represented by formula (3) coordinate to the metal atom; and a dye in which two ligands represented by formula (3) coordinate to the metal atom.

### Claim 3 (depends on 1)

The aqueous ink composition for ink jet textile printing according to claim 1, wherein
a concentration ratio of the lithium ions to the sodium ions (Li+/Na+) is 0.01 or more and 0.6 or less.

### Claim 4 (depends on 1)

The aqueous ink composition for ink jet textile printing according to claim 1, wherein
the metal atom is a chromium atom.

### Claim 5 (depends on 1)

The aqueous ink composition for ink jet textile printing according to claim 1, further comprising
one or more of a lactam and a polyol as organic solvents.

### Claim 6 (depends on 1)

The aqueous ink composition for ink jet textile printing according to claim 1, wherein
a content of the dye is 2.0% by mass or more and 8.0% by mass or less based on a total amount of the ink composition.

### Claim 7 (depends on 1)

The aqueous ink composition for ink jet textile printing according to claim 1, wherein
an object on which textile printing is performed is a nylon fabric or a nylon/urethane blended fabric.

### Claim 8 (depends on 1)

An ink jet textile printing method comprising
discharging, from an ink jet head, the aqueous ink composition for ink jet textile printing according to claim 1, thereby attaching to a nylon fabric or a nylon/urethane blended fabric.