公开(公告)号：US20230415454A1

公开(公告)日：2023-12-28

申请号：US18252245

申请日：2021-10-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takakazu YAMANE ,  Keiichi OKAMOTO ,  Kouji TERAMOTO ,  Ryuji NONAKA ,  Kazuteru TAMAI ,  Eiichi KAWASE ,  Tomohiro FUJIMOTO ,  Takayoshi NAKAMOTO

IPC: B32B15/082 ,  B32B15/095 ,  B32B15/18 ,  B32B27/08 ,  B32B27/28 ,  B32B27/38 ,  B32B27/36 ,  B32B27/40

CPC classification number: B32B15/082 ,  B32B15/095 ,  B32B15/18 ,  B32B27/08 ,  B32B27/28 ,  B32B27/38 ,  B32B27/36 ,  B32B27/40 ,  B32B2255/06 ,  B32B2264/1052 ,  B32B2264/108 ,  B32B2264/302 ,  B32B2307/4026 ,  B32B2307/412 ,  B32B2307/7376

Abstract: 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 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°.

公开(公告)号：US20240018365A1

公开(公告)日：2024-01-18

申请号：US18252176

申请日：2021-10-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takakazu YAMANE ,  Keiichi OKAMOTO ,  Kouji TERAMOTO ,  Ryuji NONAKA ,  Kazuteru TAMAI ,  Eiichi KAWASE ,  Tomohiro FUJIMOTO ,  Takayoshi NAKAMOTO

IPC: C09D5/03 ,  C09D7/61 ,  C09D7/40

CPC classification number: C09D5/031 ,  C09D7/61 ,  C09D7/69 ,  C09D7/67 ,  C09D7/68 ,  C09D5/035

Abstract: 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.

公开(公告)号：US20240018319A1

公开(公告)日：2024-01-18

申请号：US18251735

申请日：2021-10-22

Applicant: MAZDA MOTOR CORPORATION

Inventor： Takakazu YAMANE ,  Keiichi OKAMOTO ,  Kouji TERAMOTO ,  Ryuji NONAKA ,  Kazuteru TAMAI ,  Eiichi KAWASE ,  Tomohiro FUJIMOTO ,  Takayoshi NAKAMOTO

IPC: C08J7/04 ,  C09D5/36 ,  C09D7/41 ,  C09D7/61 ,  C09D7/40 ,  C08K3/08 ,  C08K3/04

CPC classification number: C08J7/042 ,  C09D5/36 ,  C09D7/41 ,  C09D7/61 ,  C09D7/67 ,  C08K3/08 ,  C08K3/04 ,  C08K2003/0812 ,  C08K2201/011

Abstract: A multilayer coating film includes a lustrous layer containing a luster material, and a colored layer stacked on the lustrous layer, containing a reddish coloring agent, and having translucency. For the lustrous layer, when a light incident angle (an angle with respect to a line perpendicular to the surface of the lustrous layer) is 45° and L*(θ) represents the L* value of the lightness index of reflected light measured at a light receiving angle (the angle of inclination toward a light source side from a specular reflection direction) θ, L*(θ) at 45°≤θ≤80° and 100°≤θ≤110° is 10 or less, and when the luster material is projected onto the bottom surface of the lustrous layer, the percentage of the projected area of the luster material on the bottom surface is 3% or more to 70% or less per unit area.