Multilayer coating film and coated article

Patent metadata

Field	Value
Publication number	US-10676622-B2
Application number	US-201616087020-A
Country	US
Kind code	B2
Filing date	Sep 30, 2016
Priority date	Sep 30, 2016
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

FF properties of a multilayer coating film configured to exhibit a warm color through a lustrous layer (14) and a translucent colored layer (15) are improved to achieve a metallic textured color having a high-quality color tone. The lustrous layer (14) contains, in a mixed state, a high-reflection flake (21) having a visible light reflectance of 90 % or more and a low-reflection flake (22) having a visible light reflectance that is half (i.e., ½) or smaller than the visible light reflectance of the high-reflection flake (21) as the luster material. When both of the high-reflection flake (21) and the low-reflection flake (22) are projected on a bottom of the lustrous layer (14), a ratio of a projected area of the flakes (21) and (22) on the bottom of the lustrous layer (14) is 100 %.

First claim

The invention claimed is:

1. A multilayer coating film, comprising:
a lustrous layer containing a luster material and formed directly or indirectly on a surface of a coating target; and
a colored layer which is translucent, containing a warm color pigment, and layered on the lustrous layer, wherein
the lustrous layer contains, in a mixed state, a high-reflection flake having a visible light reflectance of 90% or more and a low-reflection flake having a visible light reflectance that is one fourth (¼) or smaller than the visible light reflectance of the high-reflection flake as the luster material,
when both of the high-reflection flake and the low-reflection flake are projected on a bottom of the lustrous layer, a ratio of a projected area of the flakes on the bottom of the lustrous layer is 100%,
a ratio of a total area of the high-reflection flake with respect to a total area of both of the high-reflection flake and the low-reflection flake is 25% or more and 75% or less, and
a concentration of the warm color pigment in the colored layer is 2% by mass or more and 16% by mass or less.

2. The multilayer coating film of claim 1 , wherein
the low-reflection flake is smaller in thickness than the high-reflection flake.

3. The multilayer coating film of claim 1 , wherein
the high-reflection flake is an aluminum flake, and the low-reflection flake is a chrome oxide flake.

4. The multilayer coating film of claim 1 , wherein
a mean value of reflectances of the lustrous layer which are measured at a light receiving angle of 110° in the case of a light incident angle of 45° within a wavelength range of between 450 nm and 700 nm is set to be 0.003 or more and 0.045 or less, defined as an absolute value, with respect to a reflectance of a standard white plate.

5. The multilayer coating film of claim 1 , wherein
the pigment of the colored layer is a reddish pigment.

6. A coated object having the multilayer coating film of claim 1 .

Assignees

• Mazda Motor

Inventors

• Yamane Takakazu
• Okamoto Keiichi
• Teramoto Kouji
• Nonaka Ryuji

Classifications

• B05D5/065 Primary

  having colour interferences or colour shifts or opalescent looking, flip-flop, two tones · CPC title

• C09D7/41

  Organic pigments; Organic dyes · CPC title

• C09D7/61

  inorganic · CPC title

• C09D5/004 Primary

  Reflecting paints; Signal paints · CPC title

• B05D2202/00

  Metallic substrate · CPC title