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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.:

US 8993673 B1

PDFFull Text
Date of Patent:
Mar. 31, 2015

Filed:

Feb. 09, 2010

Water-based coating composition and method of forming multilayered coating film

Applicants:

Hiroshi Kitagawa, Hiratsuka, JP;

Munehiro Nakata, Hiratsuka, JP;

Daisuke Takayama, Hiratsuka, JP;

Tatsuya Azuma, Hiratsuka, JP;

Inventors:

Hiroshi Kitagawa, Hiratsuka, JP;

Munehiro Nakata, Hiratsuka, JP;

Daisuke Takayama, Hiratsuka, JP;

Tatsuya Azuma, Hiratsuka, JP;

Assignee:

Kansai Paint Co., Ltd., Hyogo, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Patrick Niland

Int. Cl.
CPC ...
B05D 1/36 (2006.01); B05D 3/02 (2006.01); B05D 7/00 (2006.01); B32B 27/00 (2006.01); B32B 27/40 (2006.01); C08F 8/30 (2006.01); C08F 283/04 (2006.01); C08G 18/08 (2006.01); C08J 3/00 (2006.01); C08K 3/20 (2006.01); C08L 75/00 (2006.01); C08G 18/32 (2006.01); C08G 18/44 (2006.01); C08G 18/00 (2006.01); C08G 18/66 (2006.01); C08G 18/62 (2006.01); C08J 3/20 (2006.01); C08J 3/205 (2006.01); B32B 27/30 (2006.01); C08G 18/65 (2006.01); C09D 175/00 (2006.01); C09D 5/00 (2006.01); C09D 133/10 (2006.01); C08L 75/04 (2006.01); C09D 5/02 (2006.01); C08L 33/10 (2006.01); C09D 133/00 (2006.01); C09D 133/08 (2006.01); C08L 33/08 (2006.01); C08K 3/00 (2006.01); C08L 33/00 (2006.01); C08G 18/75 (2006.01); C08G 18/12 (2006.01); C09D 175/04 (2006.01);
U.S. Cl.
CPC ...
B05D 7/572 (2013.01); B32B 27/40 (2013.01); B32B 27/00 (2013.01); C08G 18/3203 (2013.01); C08G 18/44 (2013.01); B05D 1/36 (2013.01); B05D 3/02 (2013.01); C08G 18/00 (2013.01); C08G 18/66 (2013.01); C08G 18/6225 (2013.01); C08J 3/203 (2013.01); C08J 3/205 (2013.01); B32B 27/30 (2013.01); C08J 3/00 (2013.01); C08G 18/6511 (2013.01); B32B 27/308 (2013.01); C08J 2333/10 (2013.01); B05D 2520/00 (2013.01); B32B 2333/08 (2013.01); B05D 2401/20 (2013.01); B32B 2333/12 (2013.01); C08J 2433/00 (2013.01); C08J 2333/00 (2013.01); C08J 2333/08 (2013.01); C08J 2433/10 (2013.01); B32B 2375/00 (2013.01); B32B 2605/08 (2013.01); C08J 2375/04 (2013.01); C08J 2475/00 (2013.01); B05D 2503/00 (2013.01); B32B 2270/00 (2013.01); C08J 2475/04 (2013.01); B32B 2250/03 (2013.01); B05D 2420/01 (2013.01); B05D 2502/00 (2013.01); C08J 2433/08 (2013.01); C09D 175/00 (2013.01); C09D 5/00 (2013.01); C09D 5/002 (2013.01); C08L 75/00 (2013.01); C09D 133/10 (2013.01); C08K 3/20 (2013.01); C08L 75/04 (2013.01); C09D 5/022 (2013.01); C08L 33/10 (2013.01); C09D 133/00 (2013.01); C09D 133/08 (2013.01); C08L 33/08 (2013.01); C08K 3/00 (2013.01); C08L 33/00 (2013.01); C08G 18/6254 (2013.01); C08G 18/6266 (2013.01); C08G 18/6659 (2013.01); C08G 18/758 (2013.01); C08G 18/0823 (2013.01); C08G 18/12 (2013.01); C09D 175/04 (2013.01);
Abstract

An object of the present invention is to provide an aqueous coating composition with excellent finished appearance and removability in bell cleaning, and a method for forming a multilayer coating film having excellent smoothness by a 3-coat-1-bake method including successively applying an aqueous first colored coating composition, an aqueous second colored coating composition, and a clear coating composition to a substrate, and heat-curing the resulting three layers of the multilayer coating film all at once. The present invention provides an aqueous coating composition containing an acrylic resin (A), a curing agent (B), and a urethane resin emulsion (C) with a weight average molecular weight of 2,000 to 50,000, the urethane resin emulsion (C) being prepared using constituent components containing a polyisocyanate component and a polyol component as starting materials, wherein the polyisocyanate component contains an alicyclic diisocyanate, and the polyol component contains a polycarbonate diol in an amount of 50 mass %, based on the total amount of the polyol component.

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