	US 12,241,011 B2
	Polyamine-polyesters as corrosion inhibition
Ashish Dhawan, Aurora, IL (US); Jeremy Moloney, Katy, TX (US); and Carter Martin Silvernail, Lakeville, MN (US)
Assigned to Ecolab USA Inc., St. Paul, MN (US)
Filed by Ecolab USA Inc., St. Paul, MN (US)
Filed on Aug. 5, 2022, as Appl. No. 17/817,795.
Claims priority of provisional application 63/203,957, filed on Aug. 5, 2021.
Prior Publication US 2023/0076540 A1, Mar. 9, 2023
Int. Cl. C11D 11/00 (2006.01); C07C 219/08 (2006.01); C09K 15/20 (2006.01); C11D 3/00 (2006.01); C11D 3/30 (2006.01); C23F 11/14 (2006.01)

CPC C09K 15/20 (2013.01) [C07C 219/08 (2013.01); C11D 3/0015 (2013.01); C11D 3/30 (2013.01); C23F 11/141 (2013.01); C11D 2111/12 (2024.01)]

20 Claims

1. A polyester polyamine compound, the polyester polyamine compound corresponding to the structure of Formula 2, or a salt thereof:

wherein

R₁is independently alkylene;

R₂is independently hydrogen or —COR₄;

R₃is independently alkyl, alkenyl, aryl, or alkaryl;

R₄is independently alkyl or alkenyl;

R₁₀and R₁₁are each independently hydrogen, alkyl, or alkaryl;

m is an integer from 1 to 10;

n is an integer from 3 to 10; and

wherein at least one R₂is —COR₄.