Coloring Composition, Coloring Method, And Pigment Dispersion

Patent metadata

Field	Value
Publication number	US-2023279255-A1
Application number	US-202318115028-A
Country	US
Kind code	A1
Filing date	Feb 28, 2023
Priority date	Mar 1, 2022
Publication date	Sep 7, 2023
Grant date	—

Abstract

An aqueous coloring composition contains a metal pigment and water. The metal pigment is metal particles having a surface treated with at least one surface treatment agent, and the surface treatment agent is at least one compound represented by general formula (1) or (2). The volume-average particle diameter D50 of the metal pigment is 9 μm or less.
(A 1 -R 1 —)P(O)(OH) 2   (1)

(A 2 -R 2 —O—) a P(O)(OH) 3-a   (2)

(In the formulae, A 1 and A 2 each independently represent a hydrogen atom or a group selected from a carboxyl group, a hydroxyl group, an amino group, and an oxyalkylene-containing group, R 1 and R 2 each independently represent a hydrocarbon group having 12 or more carbon atoms, and a represents an integer of 1 or 2.)

First claim

What is claimed is:

1 . An aqueous coloring composition comprising:
a metal pigment and water, wherein: the metal pigment is metal particles having a surface treated with at least one surface treatment agent; the surface treatment agent is at least one compound represented by general formula (1) or (2); and a volume-average particle diameter D50 of the metal pigment is 9 μm or less:
(A 1 -R 1 —)P(O)(OH) 2   (1)

(A 2 -R 2 —O—) a P(O)(OH) 3-a   (2)

where A 1 and A 2 each independently represent a hydrogen atom or a group selected from a carboxyl group, a hydroxyl group, an amino group, and an oxyalkylene-containing group, R 1 and R 2 each independently represent a hydrocarbon group having 12 or more carbon atoms, and a represents an integer of 1 or 2.

2 . The coloring composition according to claim 1 , wherein:
the surface treatment agent includes either a compound represented by formula (1) or a compound represented by formula (2) in which a is represented by 2.

3 . The coloring composition according to claim 1 , wherein:
a percentage of compounds represented by formula (1) in which a is 2 is 5% by mass or more and 90% by mass or less, with a total mass of the surface treatment agent being 100% by mass.

4 . The coloring composition according to claim 1 , wherein:
the volume-average particle diameter D50 of the metal pigment is 3 μm or more and 8 μm or less.

5 . The coloring composition according to claim 1 , wherein:
the volume-average particle diameter D50 of the metal pigment is 1 μm or less.

6 . The coloring composition according to claim 1 , wherein:
for the surface treatment agent, the R 1 or R 2 is a hydrocarbon group having 15 or more and 30 or fewer carbon atoms.

7 . The coloring composition according to claim 1 , wherein:
the coloring composition is a paint composition.

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

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

10 . The coloring composition according to claim 1 , wherein:
the metal particles are shaped like flakes.

11 . The coloring composition according to claim 1 , further comprising:
an organic solvent.

12 . The coloring composition according to claim 11 , wherein:
the organic solvent is selected from aromatic monohydric alcohols and aliphatic monohydric alcohols having four or more carbon atoms.

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

14 . A pigment dispersion for use in preparing the coloring composition according to claim 1 , the pigment dispersion comprising:
the metal pigment.

Assignees

• Seiko Epson Corp

Inventors

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

Classifications

• C08K2003/0812

  Aluminium · CPC title

• C08K2201/005

  Additives being defined by their particle size in general · CPC title

• C09D7/62

  modified by treatment with other compounds · CPC title

• C09D17/006 Primary

  Metal · CPC title

• C08K3/08

  Metals · CPC title