公开(公告)号：US20220127730A1

公开(公告)日：2022-04-28

申请号：US17495978

申请日：2021-10-07

Applicant: Ecolab USA Inc.

Inventor： Bingzhi Chen ,  Malgorzata A. Krawczyk ,  Craig W. S. Myers ,  John M. Chudomel ,  Pradeep Cheruku

IPC: C23F11/18 ,  C23F11/12

Abstract: The invention provides a water treatment composition comprising a cathodic inhibitor comprising at least one rare earth metal, an anodic inhibitor comprising at least one polycarboxylic acid, and a polymer dispersant comprising at least one sulfonic group. The invention also provides a method of inhibiting corrosion of a metal in an industrial water system, which method includes treating water of the industrial water system with the composition of the invention, to provide treated water.

公开(公告)号：US20230416128A1

公开(公告)日：2023-12-28

申请号：US18337610

申请日：2023-06-20

Applicant: Ecolab USA Inc.

Inventor： Bingzhi Chen ,  Malgorzata A. Krawczyk ,  Michael P. Weberski, JR.

IPC: C02F5/14

CPC classification number: C02F5/145 ,  C02F2303/08

Abstract: The invention provides a method of inhibiting corrosion of a metal in an industrial water system, the method comprising: (i) treating water of the industrial water system with a corrosion inhibiting-effective amount of a phosphorus-based treatment program comprising a phosphorus-based compound to provide a first treated industrial water, and (ii) treating the first treated industrial water with a corrosion inhibiting-effective amount of a metal-containing treatment program to provide a second treated industrial water, to inhibit corrosion of metal in the system.