Coloring Composition, Coloring Method, And Pigment Dispersion

Patent metadata

Field	Value
Publication number	US-2023303866-A1
Application number	US-202318189480-A
Country	US
Kind code	A1
Filing date	Mar 24, 2023
Priority date	Mar 25, 2022
Publication date	Sep 28, 2023
Grant date	—

Abstract

An aqueous coloring composition contains a metal pigment and a solvent component. The metal pigment is metal particles having a surface treated with at least one surface treatment agent, and the solvent component includes water and at least one organic solvent. The coordinate-to-coordinate distance between the HSP coordinates of the surface treatment agent and those of the solvent component is 4.5 or less.

First claim

What is claimed is:

1 . An aqueous coloring composition comprising:
a metal pigment and a solvent component, wherein: the metal pigment is metal particles having a surface treated with at least one surface treatment agent; the solvent component includes water and at least one organic solvent; and a coordinate-to-coordinate distance between HSP coordinates of the surface treatment agent and HSP coordinates of the solvent component is 4.5 or less.

2 . The coloring composition according to claim 1 , wherein:
the surface treatment agent is at least one compound represented by formula (1) or (2):
(R 1 —)P(O)(OH) 2   (1)

(R 2 —O—) a P(O)(OH) 3−a   (2)

where R 1 and R 2 independently represent a substituted or unsubstituted hydrocarbon group having 14 or more carbon atoms, and a represents 1 or 2.

3 . The coloring composition according to claim 1 , wherein:
the organic solvent includes an organic solvent having an HSP value of 25 [cal/cm 3 ] 0.5 or more and an organic solvent having an HSP value of less than 25 [cal/cm 3 ] 0.5 .

4 . The coloring composition according to claim 1 , wherein:
a water content is 50% by mass or more and 70% by mass or less of a total amount of the coloring composition.

5 . The coloring composition according to claim 1 , wherein:
a total amount of the organic solvent is 20% by mass or more and 60% by mass or less of a total amount of the coloring composition.

6 . The coloring composition according to claim 1 , wherein:
the organic solvent includes an organic solvent having an HSP value of less than 25 [cal/cm 3 ] 0.5 selected from aromatic monohydric alcohols, aliphatic monohydric alcohols having four or more carbon atoms, and alkanediols.

7 . The coloring composition according to claim 1 , wherein:
the organic solvent includes an organic solvent having an HSP value of 25 [cal/cm 3 ] 0.5 or more selected from alkanediols, glycols, and glycol ethers.

8 . The coloring composition according to claim 1 , further comprising:
a polyoxyalkylene amine compound.

9 . The coloring composition according to claim 1 , wherein:
a metal pigment content is 0.5% by mass or more and 20% by mass or less.

10 . The coloring composition according to claim 1 , wherein:
the coloring composition is a paint composition or ink composition.

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

12 . The coloring composition according to claim 1 , wherein:
an amount of the surface treatment agent used is 1% by mass or more and 50% by mass or less, with a total mass of the metal particles being 100% by mass.

13 . The coloring composition according to claim 1 , wherein:
the metal particles are in flake shape.

14 . A coloring method comprising:
attaching the coloring composition according to claim 1 to a substrate.

15 . An aqueous pigment dispersion for use in preparing the coloring composition according to claim 1 , the pigment dispersion comprising:
the metal pigment and the solvent component, wherein: a coordinate-to-coordinate distance between HSP coordinates of the surface treatment agent and HSP coordinates of the solvent component is 4.5 or less.

Assignees

• Seiko Epson Corp

Inventors

• Tsukada Kenta
• Hiruma Kei
• Nakatani Mitsunobu
• Ushiyama Tomoyuki

Classifications

• C09D7/62 Primary

  modified by treatment with other compounds · CPC title

• C09D7/20 Primary

  Diluents or solvents · CPC title

• C09C3/08

  Treatment with low-molecular-weight {non-polymer} organic compounds {(C09C3/006, C09C3/048 take precedence)} · CPC title

• C09D7/63

  organic · CPC title

• C09D7/70

  characterised by shape, e.g. fibres, flakes or microspheres · CPC title