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 11980912 B1

Date of Patent:

May. 14, 2024

Filed:

Jun. 11, 2019

Multi-layer coatings and methods of preparing the same

Applicant:

Ppg Industries Ohio, Inc., Cleveland, OH (US);

Inventors:

Wei Wang, Allison Park, PA (US);

David R. Fenn, Allison Park, PA (US);

Assignee:

PPG Industries Ohio, Inc., Cleveland, OH (US);

Attorney:

Krisanne Shideler

Primary Examiner:

Jeffrey D Washville

Int. Cl.

CPC ...

B05D 7/00 (2006.01); C08F 220/06 (2006.01); C08F 220/14 (2006.01); C08F 220/18 (2006.01); C08F 220/20 (2006.01); C08F 222/06 (2006.01); C08F 222/10 (2006.01); C08G 18/12 (2006.01); C08G 18/28 (2006.01); C08G 18/32 (2006.01); C08G 18/34 (2006.01); C08G 18/67 (2006.01); C08G 18/75 (2006.01); C08G 18/78 (2006.01); C08K 5/00 (2006.01);

U.S. Cl.

CPC ...

B05D 7/572 (2013.01); B05D 7/574 (2013.01); B05D 7/576 (2013.01); C08F 220/06 (2013.01); C08F 220/14 (2013.01); C08F 220/1804 (2020.02); C08F 220/20 (2013.01); C08F 222/06 (2013.01); C08F 222/102 (2020.02); C08G 18/12 (2013.01); C08G 18/281 (2013.01); C08G 18/3206 (2013.01); C08G 18/341 (2013.01); C08G 18/672 (2013.01); C08G 18/755 (2013.01); C08G 18/7843 (2013.01); C08K 5/0041 (2013.01); B05D 2202/10 (2013.01); B05D 2350/60 (2013.01); B05D 2425/01 (2013.01); B05D 2425/02 (2013.01); B05D 2425/03 (2013.01); B05D 2502/00 (2013.01); B05D 2503/00 (2013.01);

Abstract

A multi-layer coating system includes: (a) a first basecoat layer formed from a first coating composition including a free polyisocyanate and hydroxyl functional polymeric core-shell particles; (b) a second basecoat layer applied over at least a portion of the first basecoat layer, the second basecoat layer formed from a second coating composition including carboxylic acid functional polymeric core-shell particles; and (c) a topcoat layer applied over at least a portion of the second basecoat layer, the topcoat layer formed from a coating composition including least one free polyisocyanate having a weight average molecular weight of less than 600 g/mol and at least one film-forming resin in which an amount of free polyisocyanate having a weight average molecular weight of less than 600 g/mol is greater than 5 weight %, based on the total resin solids of the coating composition that forms the topcoat layer.

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