US 11,732,143 B2
Identification and characterization of novel corrosion inhibitor molecules
Ramakrishnan Balasubramanian, Saint Paul, MN (US); Brian Epps, Saint Paul, MN (US); Jeremy Moloney, Katy, TX (US); and Ethan Moloney, Saint Paul, MN (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on May 5, 2022, as Appl. No. 17/662,169.
Application 17/662,169 is a division of application No. 16/778,927, filed on Jan. 31, 2020, granted, now 11,352,507.
Application 16/778,927 is a continuation of application No. 15/349,536, filed on Nov. 11, 2016, granted, now 10,590,282, issued on Mar. 17, 2020.
Claims priority of provisional application 62/254,293, filed on Nov. 12, 2015.
Prior Publication US 2022/0267612 A1, Aug. 25, 2022
Int. Cl. C09D 5/08 (2006.01); C09D 5/14 (2006.01); C23F 11/10 (2006.01); C23F 11/14 (2006.01); C23F 11/12 (2006.01); C23F 11/16 (2006.01); C09K 8/54 (2006.01); C09K 8/60 (2006.01); A01N 37/16 (2006.01); C09D 5/16 (2006.01); C23F 11/04 (2006.01); C23F 11/173 (2006.01); C09K 8/52 (2006.01)
CPC C09D 5/08 (2013.01) [A01N 37/16 (2013.01); C09D 5/086 (2013.01); C09D 5/14 (2013.01); C09D 5/1625 (2013.01); C09K 8/54 (2013.01); C09K 8/605 (2013.01); C23F 11/04 (2013.01); C23F 11/10 (2013.01); C23F 11/128 (2013.01); C23F 11/144 (2013.01); C23F 11/149 (2013.01); C23F 11/164 (2013.01); C23F 11/173 (2013.01); C09K 8/52 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for inhibiting corrosion from a target treated with a biocide comprising:
contacting a target with a water source containing a biocide comprising a C1-C22 peroxycarboxylic acid composition or a C1-C22 peroxycarboxylic acid forming composition or a non-oxidizing biocide;
contacting the target with the water source further containing a corrosion inhibitor that is an alkyl pyridinium salt, cetyl pyridinium salt, polyesteramide, dimethicone, imidazole derivative, sulphonamide or combination thereof; and
inhibiting corrosion, wherein the treated target is a surface within the water source and has reduced corrosion rate of less than about 4 mils per year (MPY) in comparison to a target that is not treated with the water source.