US 12,319,026 B2
Multilayered coating film and coated article
Takakazu Yamane, Hiroshima (JP); Keiichi Okamoto, Hiroshima (JP); Kouji Teramoto, Hiroshima (JP); Ryuji Nonaka, Hiroshima (JP); Kazuteru Tamai, Hiroshima (JP); Eiichi Kawase, Hiroshima (JP); Tomohiro Fujimoto, Hiroshima (JP); and Takayoshi Nakamoto, Hiroshima (JP)
Assigned to MAZDA MOTOR CORPORATION, Hiroshima (JP)
Appl. No. 18/252,245
Filed by MAZDA MOTOR CORPORATION, Hiroshima (JP)
PCT Filed Oct. 22, 2021, PCT No. PCT/JP2021/039154
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2022/102379, PCT Pub. Date May 19, 2022.
Claims priority of application No. 2020-189703 (JP), filed on Nov. 13, 2020.
Prior Publication US 2023/0415454 A1, Dec. 28, 2023
Int. Cl. B32B 15/082 (2006.01); B32B 15/095 (2006.01); B32B 15/18 (2006.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 27/36 (2006.01); B32B 27/38 (2006.01); B32B 27/40 (2006.01)
CPC B32B 15/082 (2013.01) [B32B 15/095 (2013.01); B32B 15/18 (2013.01); B32B 27/08 (2013.01); B32B 27/28 (2013.01); B32B 27/36 (2013.01); B32B 27/38 (2013.01); B32B 27/40 (2013.01); B32B 2255/06 (2013.01); B32B 2264/1052 (2020.08); B32B 2264/108 (2013.01); B32B 2264/302 (2020.08); B32B 2307/4026 (2013.01); B32B 2307/412 (2013.01); B32B 2307/7376 (2023.05)] 20 Claims
OG exemplary drawing
 
1. A multilayer coating film comprising:
a lustrous layer directly or indirectly formed on a surface of a coating target and containing a luster material and a black coloring agent; and
a colored layer stacked on the lustrous layer, containing a red coloring agent, and having translucency, wherein
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 nm−1 or more and 0.06 nm−1 or 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°.