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:
Dec. 19, 2006
Filed:
Oct. 28, 2003
Hiroyuki Onoyama, Hiratsuka, JP;
Yasuyuki Kataoka, Hiratsuka, JP;
Shuichi Nakahara, Hiratsuka, JP;
Yoshizumi Matsuno, Hiratsuka, JP;
Hiroyuki Onoyama, Hiratsuka, JP;
Yasuyuki Kataoka, Hiratsuka, JP;
Shuichi Nakahara, Hiratsuka, JP;
Yoshizumi Matsuno, Hiratsuka, JP;
Kansai Paint Co., Ltd., Amagasaki, JP;
Abstract
The present invention provides a method for forming a coating film on a plastic substrate which comprises: (1) coating the plastic substrate with an aqueous white primer (A) having a water content of 15 to 48 wt. % to form a coating film having an L* value of 80 or more, (2) heating the coating film of the primer (A) to adjust the water content of the film to 1 to 10 wt. % and the surface electrical resistivity value of the film to less than 10Ω/square, (3) electrostatically coating the coating film of the primer (A) with a thermosetting clear colored coating composition (B), (4) electrostatically coating the uncured coating film of the coating composition (B) with a thermosetting clear coating composition (C), and (5) baking the three-layer coating film to obtain a cured multilayer coating film having an N value of 8.5 or more.