logo

For the Inventor, By the Inventor

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 11767446 B1

PDFFull Text
Date of Patent:
Sep. 26, 2023

Filed:

May. 02, 2019

(meth)acrylic copolymer, coating material composition, coated article and method for forming multilayer coating film

Applicant:

Mitsubishi Chemical Corporation, Chiyoda-ku, JP;

Inventors:

Takuhiro Ishii, Tokyo, JP;

Junichi Nakamura, Tokyo, JP;

Shinsuke Haraguchi, Tokyo, JP;

Assignee:

Mitsubishi Chemical Corporation, Chiyoda-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Robert S Jones, Jr

Assistant Examiner:

Jiangtian Xu

Int. Cl.
CPC ...
C09D 153/00 (2006.01); C08F 297/02 (2006.01); C09D 151/00 (2006.01); C08F 285/00 (2006.01); B05D 1/36 (2006.01); C08F 2/38 (2006.01); B05D 1/38 (2006.01); C09D 133/14 (2006.01); B05D 7/24 (2006.01); C09D 201/06 (2006.01); C08F 220/14 (2006.01); C08F 220/38 (2006.01);
U.S. Cl.
CPC ...
C09D 153/00 (2013.01); B05D 1/36 (2013.01); B05D 1/38 (2013.01); B05D 7/24 (2013.01); C08F 2/38 (2013.01); C08F 285/00 (2013.01); C08F 297/026 (2013.01); C09D 133/14 (2013.01); C09D 151/003 (2013.01); C09D 201/06 (2013.01); C08F 220/14 (2013.01); C08F 220/382 (2020.02); C08F 2500/26 (2013.01); C08F 2800/20 (2013.01);
Abstract

Provided is a coating material composition that enables an efficient repair operation of a coating film after coating, a (meth)acrylic copolymer that is suitable for obtaining the coating material composition, and a coated article and a method for forming a multilayer coating film using the coating material composition. The (meth)acrylic copolymer includes: a constituent unit derived from a macromonomer (a); and a constituent unit derived from a vinyl monomer (b), a hydroxyl value of the (meth)acrylic copolymer is equal to or greater than 120 mgKOH/g and equal to or less than 260 mgKOH/g, and the content of a constituent unit that has a primary hydroxyl group of the (meth)acrylic copolymer is equal to or less than 30 parts by mass with respect to 100 parts by mass of the constituent unit derived from the macromonomer (a) and the constituent unit derived from the vinyl monomer (b).

Find Patent Forward Citations

Loading…