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:
Jul. 17, 2012
Filed:
Mar. 12, 2008
Koki Chiga, Hiratsuka, JP;
Tooru Fukuda, Hiratsuka, JP;
Toshiaki Nagano, Hiratsuka, JP;
Hideo Sugai, Hiratsuka, JP;
Koki Chiga, Hiratsuka, JP;
Tooru Fukuda, Hiratsuka, JP;
Toshiaki Nagano, Hiratsuka, JP;
Hideo Sugai, Hiratsuka, JP;
Kansai Paint Co., Ltd., Hyogo-ken, JP;
Abstract
This invention provides a multilayer coating film-forming method which comprises applying a first clear paint onto a coating object, applying onto so formed first clear coating film which is either uncured or cured by heating, a second clear paint such that its heat-cured film thickness falls within a range of 2-15 μm, and forming the second clear coating film, (a) the first clear paint and second clear paint comprising hydroxyl-containing resin as the base resin and polyisocyanate compound as the crosslinking agent, and (b) when the coating film formed by applying a paint to a cured film thickness of 40 μm and curing it by heating at 140° C. for 30 minutes is measured of its dynamic viscoelasticity at a frequency of 11 Hz, the first clear paint forming the first clear coating film having a glass transition temperature of lower than 70° C. and tanδ (=loss elastic modulus/storage elastic modulus) at 80° C. of less than 0.4, and the second clear paint forming the second clear coating film having a glass transition temperature of at least 70° C.