Mazda Motor Corporation

Nippon Paint Automotive Coatings Co., Ltd

Kouji Teramoto

Takakazu Yamane

Keiichi Okamoto

Ryuji Nonaka

Hidekazu Kato

Naoto Waku

Eiichi Kawase

Takayoshi Nakamoto

Kana Haruki

Kazuteru Tamai

Tomohiro Fujimoto

Fumi Hirano

Eiji Yamanaka

Masaharu Arashi

Hiroshi Kiyonaga

Hideaki Tsujioka

A multilayer coating film includes a lustrous layer containing a luster material and a blackish coloring agent, and a colored layer containing a reddish coloring agent, and having translucency. A slope of a tangent of a spectrum of a spectral transmittance, defined as an absolute value, of the colored layer at the wavelength of 620 nm is 0.02 nmor more and 0.06 nmor less, the spectral transmittance being obtainable by dividing a spectral reflectance measured for the colored layer stacked on the lustrous layer at the light receiving angle of 15° in the case of the light incident angle of 45°, by a spectral reflectance measured for the lustrous layer from which the colored layer is removed and a surface of which is therefore exposed, at the light receiving angle of 15° in the case of the light incident angle of 45°.

Multilayered coating film and coated article

A multilayer coating film includes a lustrous layer containing a luster material and a colored layer containing a reddish coloring agent, and having translucency. Regarding a Y value of an XYZ colorimetric system calibrated with a standard white plate, when a light incident angle is 45°, Y(5°) represents a Y value of reflected light measured at a light receiving angle of 5°, and Y(15°) represents a Y value of reflected light measured at a light receiving angle of 15°, the lustrous layer satisfies the following: Y(5°) is 30 or more to 700 or less; Y(15°)=k×Y(5°) (where k is a coefficient); and k is 0.01 or more to 0.3 or less. The concentration of the reddish coloring agent in the colored layer is 1 mass % or more to 17 mass % or less.

In a coated article including a laminated coating film configured such that a first base layercontaining a lustrous materialand a second base layerand a transparent clear layercontaining an organic pigmentare stacked on each other in this order on a coating target object, the same type of organic ultraviolet absorbing agenthaving a molecular weight of equal to or greater than 500 is added to the first base layerand the second base layer

Laminated coating film, coated article, and method for forming laminated coating film

FF properties of a multilayer coating film configured to exhibit a warm color through a lustrous layer () and a translucent colored layer () are improved to achieve a metallic textured color having a high-quality color tone. The lustrous layer () is configured such that Y(10&#xb0;) is 50 or more and 950 or less and that Y(25&#xb0;) is 0.05 or more and 0.35 or less times the Y(10&#xb0;), where Y(10&#xb0;) represents a Y value, of an XYZ color system, of reflected light measured at a light receiving angle of 10&#xb0; and Y(25&#xb0;) represents a Y value of the reflected light measured at the light receiving angle of 25&#xb0; in a case where a light incident angle is 45&#xb0;. A concentration C of a warm color pigment of the colored layer () is 1% by mass or more and 17% by mass or less.

Multilayer coating film and coated article

FF properties of a multilayer coating film configured to exhibit a red color through a lustrous layer () and a translucent colored layer () are improved to achieve a metallic textured color having a high-quality color tone. The lustrous layer () is configured such that Y(10&#xb0;) is 50 or more and 950 or less and that Y(25&#xb0;) is 0.05 or more and 0.35 or less times the Y(10&#xb0;), where Y(10&#xb0;) represents a Y value, of an XYZ color system, of reflected light measured at a light receiving angle of 10&#xb0; and Y(25&#xb0;) represents a Y value of the reflected light measured at the light receiving angle of 25&#xb0; in a case where a light incident angle is 45&#xb0;. An inclination of a tangent to the spectrum of the spectral transmittance of the colored layer () at the wavelength of 620 nm is 0.012 nmor more and 0.03 nmor less, defined as an absolute value.

FF properties of a multilayer coating film configured to exhibit a warm color through a lustrous layer () and a translucent colored layer () are improved to achieve a metallic textured color having a high-quality color tone. 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 half (i.e., &#xbd;) 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 () and () on the bottom of the lustrous layer () is 100 %.

A layered coating film according to the present invention includes a lower coatincluding a first coloring material and a bright material, and an upper coatsuperposed on the lower coat and including a second coloring material. The upper coat and the lower coat have similar colors. The refractive index of a film constituent of the lower coat other than the first coloring material is higher than the refractive index of a film constituent of the upper coat other than the second coloring material.

Layered coating film, and coated article

Disclosed herein is a layered coating film comprising a lower coatincluding a coloring material, an upper coatsuperposed on the lower coat, and a protective coatsuperposed on the upper coat. The refractive index of a film constituent of the upper coat is lower than not only that of a film constituent of the lower coat other than the coloring material but also that of a film constituent of the protective coat.

An multi-layer coating filmincludes: a luster coatcontaining a luster material; a color coatapplied on the luster coat, containing a pigment, and having translucency; and a coloring flakeincluded in the luster coatand acting as the luster material to color a surface of a luster flake with a coloring material in the same type of color as a color type of the color coat

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Hiroshima, Japan

Kouji Teramoto