	US 12,071,559 B2
	Coating compositions containing acid functional polyol polymers and coatings formed therefrom
Ian Michael Jones, Pittsburgh, PA (US); Egle Puodziukynaite, Allison Park, PA (US); Shanti Swarup, Allison Park, PA (US); James C. Serene, Lower Burrell, PA (US); Paul H. Lamers, Allison Park, PA (US); Steven V. Barancyk, Wexford, PA (US); and Craig A. Wilson, Allison Park, PA (US)
Assigned to PPG Industries Ohio, Inc., Cleveland, OH (US)
Appl. No. 17/290,237
Filed by PPG Industries Ohio, Inc., Cleveland, OH (US)
PCT Filed Nov. 1, 2019, PCT No. PCT/US2019/059505 § 371(c)(1), (2) Date Apr. 29, 2021, PCT Pub. No. WO2020/092983, PCT Pub. Date May 7, 2020.
Claims priority of provisional application 62/754,283, filed on Nov. 1, 2018.
Prior Publication US 2022/0017767 A1, Jan. 20, 2022
Int. Cl. C08G 18/10 (2006.01); B05D 7/14 (2006.01); C08F 212/08 (2006.01); C08F 220/06 (2006.01); C08F 220/18 (2006.01); C08F 220/20 (2006.01); C08G 18/62 (2006.01); C08G 18/73 (2006.01); C09D 133/06 (2006.01); C09D 175/04 (2006.01)

CPC C09D 133/066 (2013.01) [B05D 7/14 (2013.01); C08F 212/08 (2013.01); C08F 220/06 (2013.01); C08F 220/1804 (2020.02); C08F 220/20 (2013.01); C08G 18/10 (2013.01); C08G 18/6229 (2013.01); C08G 18/73 (2013.01); C09D 175/04 (2013.01); B05D 2202/00 (2013.01)]

21 Claims

1. A coating composition comprising:

(a) an acid functional polyol polymer having a number average molecular weight of at least 2220, comprising an acid value of greater than 9 mg KOH/g and less than 60 mg KOH/g, and a hydroxyl value of from 100 to 300 mg KOH/g;

(b) a non-aminoplast derived crosslinker reactive with the acid functional polyol polymer; and

wherein an equivalent ratio of functional groups on the crosslinker reactive with hydroxyl functional groups to hydroxyl functional groups on the acid functional polyol polymer is within a range of from 0.5 to 1.5, and

wherein the coating composition is substantially free of an external catalyst, and the coating composition cures at a temperature of less than 80° C.