The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 11, 2022
Filed:
Mar. 29, 2021
Kansai Paint Co., Ltd., Hyogo, JP;
KANSAI PAINT CO., LTD., Hyogo, JP;
Abstract
This invention provides a method for forming a multilayer coating film, the method comprising forming a multilayer coating film that has excellent blackness, high reflectance of an infrared laser, and excellent coating film performance. The method for forming a multilayer coating film includes forming a first colored coating film containing a titanium oxide pigment, in which the diffuse reflectance at a wavelength of 905 nm or diffuse reflectance at a wavelength of 1550 nm, or both, is 40% or more; forming a second colored coating film containing at least one pigment selected from the group consisting of (A1) a perylene black pigment, (A2) a black metal oxide complex pigment, and (A3) two or more pigments selected from the group consisting of blue pigments, red pigments, yellow pigments, and green pigments; forming a third colored coating film containing a carbon black pigment; and forming a clear coating film; wherein the multilayer coating film has a lightness L*(45°) of 3 or less and a chroma C*(45°) of 1 or less, and wherein the diffuse reflectance at a wavelength of 905 nm or the diffuse reflectance at a wavelength of 1550 nm of the multilayer coating film, or both, is 10% or more.