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:
Oct. 29, 2013
Filed:
Sep. 27, 2010
Tohru Fukuda, Kanagawa, JP;
Keisuke Sai, Kanagawa, JP;
Remi Kasai, Kanagawa, JP;
Kansai Paint Co., Ltd., Hyogo, JP;
Abstract
There is provided a process for formation of a multi-layered coating film, which includes sequentially coating a first colored coating composition, a second colored coating composition and a clear coating composition (C), and simultaneously heating and curing the obtained first colored coating film, second colored coating film and clear coating film to form a multi-layered coating film, where the first colored coating composition contains (a1) a polyester resin containing a hydroxyl group, which contains 1.0-8.0 mol/kg (resin solid content) of a straight-chain alkylene group having a carbon number of 4 or more in the molecule, has a hydroxyl group value in a range of 30-160 mgKOH/g and has a number-average molecular weight in a range of 1,000-6,000, and (a2) a melamine resin; and the colored coating composition contains (b1) an acrylic resin containing a hydroxyl group, which has a hydroxyl group value in a range of 40-200 mgKOH/g and has a weight-average molecular weight in a range of 3,000-15,000, (b2) a melamine resin having a content rate of a mononuclear melamine of 40 mass % or more, and (b3) an acid catalyst.