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.:
Date of Patent:
May. 02, 2023
Filed:
Feb. 07, 2022
Applicant:
Ecolab Usa Inc., Saint Paul, MN (US);
Inventors:
Ashish Dhawan, Saint Paul, MN (US);
Jeremy Moloney, Saint Paul, MN (US);
Carter M. Silvernail, Saint Paul, MN (US);
Assignee:
ECOLAB USA INC., Saint Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F 11/14 (2006.01); C02F 5/12 (2006.01); C23F 11/10 (2006.01); C23F 11/173 (2006.01); C09K 8/54 (2006.01); C02F 103/02 (2006.01); C04B 103/61 (2006.01);
U.S. Cl.
CPC ...
C23F 11/141 (2013.01); C02F 5/12 (2013.01); C23F 11/10 (2013.01); C23F 11/173 (2013.01); C02F 2103/023 (2013.01); C02F 2303/08 (2013.01); C04B 2103/61 (2013.01); C09K 8/54 (2013.01); C09K 2208/32 (2013.01);
Abstract
Disclosed herein are corrosion control compositions comprising one or more multiple charged cationic compounds to reduce corrosion of metal surfaces in a water system. The multiple charged cationic compounds are derived from polyamines through a ring-opening reaction with an epoxide or two reactions: an aza-Michael addition with an activated olefin having a cation group and a ring-opening reaction with an epoxide. The disclosed compositions are found to be effective corrosion inhibitors for water systems.