	US 12,291,649 B2
	Two-coat single cure powder coating
Owen H. Decker, Smithville, MO (US); Thomas E. Reno, Kansas City, MO (US); Robert D. Breitzman, Liberty, MO (US); Carlos A. Concha, Kansas City, MO (US); and Jeffrey D. Rogozinski, Kansas City, MO (US)
Assigned to The Sherwin-Williams Company, Cleveland, OH (US)
Filed by The Sherwin-Williams Company, Cleveland, OH (US)
Filed on Aug. 12, 2021, as Appl. No. 17/400,607.
Application 17/400,607 is a continuation of application No. 14/019,041, filed on Sep. 5, 2013, granted, now 11,098,202.
Application 14/019,041 is a continuation in part of application No. PCT/US2012/070347, filed on Dec. 18, 2012.
Claims priority of provisional application 61/642,578, filed on May 4, 2012.
Claims priority of provisional application 61/613,647, filed on Mar. 21, 2012.
Prior Publication US 2022/0033661 A1, Feb. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C09D 5/03 (2006.01); C23C 24/10 (2006.01); C23C 30/00 (2006.01)

CPC C09D 5/03 (2013.01) [C23C 24/10 (2013.01); C23C 30/00 (2013.01); Y10T 428/31678 (2015.04)]

15 Claims

1. A method, comprising:

providing a metal substrate;

applying a first coating comprising a first powder coating composition with flow of no more than about 40 mm;

applying a second coating comprising a second powder coating composition with flow greater than about 50 mm; and

heating the first coating and second coating in a single step to form a continuous cured coating, wherein the second coating in the cured coating covers the entire first coating.