Coloring composition and coloring method

Patent metadata

Field	Value
Publication number	US-12264250-B2
Application number	US-202217586934-A
Country	US
Kind code	B2
Filing date	Jan 28, 2022
Priority date	Jan 29, 2021
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

A coloring composition of the present disclosure includes a metal pigment; an acrylic-based resin having an acid value of 200 mgKOH/g or less; and a liquid medium component, the metal pigment includes metal particles, the metal particles are surface-modified with a surface treatment agent, and the surface treatment agent includes at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2).

(RO) a P(O)(OH) 3-a   (1)

(R)P(O)(OH) 2   (2)

First claim

What is claimed is:

1. A coloring composition comprising:
a metal pigment;
an acrylic-based resin having an acid value of 200 mgKOH/g or less; and
a liquid medium component,
wherein the metal pigment includes metal particles,
the metal particles are surface-modified with a surface treatment agent, and
the surface treatment agent includes at least one selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (2)
(RO) a P(O)(OH) 3-a   (1)

(R)P(O)(OH) 2   (2)

where in the formulas, R represents a hydrocarbon group having one carbon atom or more, and a represents 1 or 2.

2. The coloring composition according to claim 1 , wherein R represents a hydrocarbon group having 10 to 30 carbon atoms.

3. The coloring composition according to claim 1 , wherein the acid value of the acrylic-based resin is 1 to 100 mgKOH/g.

4. The coloring composition according to claim 1 , wherein the acrylic-based resin has a weight average molecular weight of 5,000 to 20,000.

5. The coloring composition according to claim 1 , wherein the acrylic-based resin is formed from at least one acrylic-based monomer, and a rate thereof occupied in the acrylic-based resin is 90 percent by mass or more.

6. The coloring composition according to claim 1 , wherein the coloring composition is a solvent-based composition containing an organic solvent as the liquid medium component.

7. The coloring composition according to claim 1 , wherein the metal particles are composed of aluminum or an aluminum alloy.

8. The coloring composition according to claim 1 , wherein metal particles are in the form of scales.

9. The coloring composition according to claim 1 , wherein a content of the surface treatment agent with respect to 100 parts by mass of the metal particles is 1.0 to 50 parts by mass.

10. The coloring composition according to claim 1 , wherein the coloring composition is an ink jet ink composition.

11. A coloring method comprising:
adhering the coloring composition according to claim 1 to an object to be colored.

12. The coloring method according to claim 11 ,
wherein the adhering the coloring composition is a step of ejecting the coloring composition which is an ink jet ink composition by an ink jet method so as to adhere to the object functioning as a recording medium.

13. The coloring composition according to claim 1 , wherein in the formulas (1) and (2), R represents an alkyl group, an alkenyl group, or an alkynyl group.

14. The coloring composition according to claim 1 , wherein the metal particles surface-modified with the surface treatment agent are obtained by the surface-treatment agent reacting with the metal particles.

Assignees

• Seiko Epson Corp

Inventors

• Asai Shintaro
• Kida Hiroaki
• Hiruma Kei
• Ushiyama Tomoyuki
• Nakatani Mitsunobu
• Tsukada Kenta

Classifications

• B41J2/2107

  characterised by the ink properties (supplying ink in a solid state B41J2/17593) · CPC title

• B41J2/01

  Ink jet · CPC title

• C09D11/107

  from unsaturated acids or derivatives thereof · CPC title

• C09D11/36

  based on non-aqueous solvents · CPC title

• C09D11/322 Primary

  Pigment inks · CPC title