Glitter pigment, pigment-containing composition, and pigment-containing painted product

Patent metadata

Field	Value
Publication number	US-11365319-B2
Application number	US-201716464145-A
Country	US
Kind code	B2
Filing date	Nov 9, 2017
Priority date	Nov 25, 2016
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

The present invention provides a glitter pigment, including: a glass flake; a titanium oxide layer formed over the glass flake; and fine gold particles deposited on the titanium oxide layer, wherein the fine gold particles include fine gold particles P2 having a particle diameter of 20 nm or more and less than 50 nm, and in a square region 2 μm on a side on a surface of the titanium oxide layer on which the fine gold particles are deposited, the number of the fine gold particles P2 is 9 or more and less than 100 and an average of distances between the fine gold particles P2 is 130 nm or more and less than 500 nm, each of the distances being a distance from one of the fine gold particles P2 to another fine gold particle P2 nearest to the one.

First claim

The invention claimed is:

1. A glitter pigment, comprising:
a glass flake;
a titanium oxide layer formed over the glass flake; and
fine gold particles deposited on the titanium oxide layer, wherein
the fine gold particles comprise fine gold particles P1 having a particle diameter of less than 20 nm, fine gold particles P2 having a particle diameter of 20 nm or more and less than 50 nm, and fine gold particles P3 having a particle diameter of 50 nm or more;
in a square region 2 μm on a side on a surface of the titanium oxide layer on which the fine gold particles are deposited, the number of the fine gold particles P2 is 9 or more and less than 100 and an average of distances between the fine gold particles P2 is 130 nm or more and less than 500 nm, each of the distances being a distance from one of the fine gold particles P2 to another fine gold particle P2 nearest to the one fine gold particle P2; and
the number of the fine gold particles P3 is less than 40% of the sum of the number of the fine gold particles P1 and the number of the fine gold particles P2.

2. The glitter pigment according to claim 1 , wherein
in the region, the number of the fine gold particles P1 is less than 100 and is more than 60% of the number of the fine gold particles P2.

3. The glitter pigment according to claim 1 , wherein in the region, the number of the fine gold particles P3 is less than 120% of the number of the fine gold particles P2.

4. The glitter pigment according to claim 1 , wherein the number of the fine gold particles P2 is 15 or more in the region.

5. The glitter pigment according to claim 1 , wherein a reflected color, as measured using illuminant D 65 , is represented by a C* value of 13 or more in an L*C*h color system.

6. The glitter pigment according to claim 5 , wherein the reflected color is represented by a h value of 30 or less or 330 or more in the color system.

7. The glitter pigment according to claim 6 , wherein the C* value is 23 or more.

8. The glitter pigment according to claim 5 , wherein the reflected color is represented by a h value in the range of 150 to 300 in the color system.

9. The glitter pigment according to claim 1 , comprising no silica layer having direct contact with the fine gold particles.

10. A pigment-containing composition, comprising the glitter pigment according to claim 1 .

11. A pigment-containing painted product, comprising a substrate material and a paint film formed on the substrate material, the paint film containing the glitter pigment according to claim 1 .

12. A glitter pigment, comprising:
a glass flake;
a titanium oxide layer formed over the glass flake; and
fine gold particles deposited on the titanium oxide layer, wherein
the fine gold particles comprise fine gold particles P2 having a particle diameter of 20 nm or more and less than 50 nm, and fine gold particles P3 having a particle diameter of 50 nm or more;
in a square region 2 μm on a side on a surface of the titanium oxide layer on which the fine gold particles are deposited, the number of the fine gold particles P2 is 9 or more and less than 100 and an average of distances between the fine gold particles P2 is 130 nm or more and less than 500 nm, each of the distances being a distance from one of the fine gold particles P2 to another fine gold particle P2 nearest to the one; and
the number of the fine gold particles P3 is less than 120% of the number of the fine gold particles P2.

13. The glitter pigment according to claim 12 , wherein
the fine gold particles further comprise fine gold particles P1 having a particle diameter of less than 20 nm, and
in the region, the number of the fine gold particles P1 is less than 100 and is more than 60% of the number of the fine gold particles P2.

14. The glitter pigment according to claim 12 , wherein the number of the fine gold particles P2 is 15 or more in the region.

15. The glitter pigment according to claim 12 , wherein a reflected color, as measured using illuminant D 65 , is represented by a C* value of 13 or more in an L*C*h color system.

16. The glitter pigment according to claim 15 , wherein the reflected color is represented by a h value of 30 or less or 330 or more in the color system.

17. The glitter pigment according to claim 16 , wherein the C* value is 23 or more.

18. The glitter pigment according to claim 15 , wherein the reflected color is represented by a h value in the range of 150 to 300 in the color system.

19. The glitter pigment according to claim 12 , comprising no silica layer having direct contact with the fine gold particles.

Assignees

• Nippon Sheet Glass Co Ltd

Inventors

• Horiguchi Haruko

Classifications

• C09D5/22

  Luminous paints {(luminescent compositions C09K11/00)} · CPC title

• B05D5/067

  Metallic effect · CPC title

• B05D5/06

  to obtain multicolour or other optical effects (B05D5/02 takes precedence) · CPC title

• C09C1/0021 Primary

  comprising a core coated with only one layer having a high or low refractive index · CPC title

• C09D7/62

  modified by treatment with other compounds · CPC title