Kansai Paint Company, Ltd.

Toyota Jidosha Kabushiki Kaisha

Yoshiaki Ukai

Katsunori Ito

Keiji Ambo

Kazuhide Sato

Hiroshi Murata

Naoto Matsushima

Kazutaka Ogura

Hiroyuki Tsuji

Akiyo Tsukamoto

A method for forming a multilayer coating film, comprising sequentially applying a first colored paint (X), a second colored paint (Y), and a clear paint (Z) to a substrate, and heating the three layers of the obtained multilayer coating film separately or simultaneously to cure these layers. The first colored coating film has a lightness L* within the range of 30 to 60, the second colored coating film has a light transmittance at a wavelength of 400 nm or more and 700 nm or less within the range of 15% or more and less than 30%, and |h(X)−h(S)|, which is a difference between a hue angle h in the L*C*h color space diagram of the first colored coating film (h(X)) and a hue angle h in the L*C*h color space diagram of the multilayer coating film (h(S)), is within the range of 0 to 30.

Method for forming multilayer coating film

A method for forming a multilayer coated film on an object includes steps (1) to (3) below. A first colored coating material is applied to the object, thereby forming a first colored coated film (step (1)). The first colored coating material includes an iron-oxide-coated aluminum pigment and a quinacridone pigment and has a light reflectance property at specific wavelengths. A second colored coating material is applied to the first colored coated film, thereby forming a second colored coated film (step (2)). The second colored coating material includes a perylene pigment and has a specific hue. A clear coating material is applied to the second colored coated film (step (3)). A color difference &#x394;E between the first colored coated film and the multilayer coated film is in a range of 20 to 30.

Method for forming multilayer coated film

Growing community of inventors

Aichi-ken, Japan

Yoshiaki Ukai