US 11,772,998 B2
Use of percarboxylic acids for scale prevention in treatment systems
Ramakrishnan Balasubramanian, Saint Paul, MN (US); Brian Epps, Saint Paul, MN (US); Junzhong Li, Saint Paul, MN (US); Richard Staub, Saint Paul, MN (US); and Victor Keasler, 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 20, 2021, as Appl. No. 17/303,117.
Application 17/303,117 is a continuation of application No. 14/972,727, filed on Dec. 17, 2015, granted, now 11,040,902.
Claims priority of provisional application 62/217,315, filed on Sep. 11, 2015.
Claims priority of provisional application 62/094,056, filed on Dec. 18, 2014.
Prior Publication US 2021/0276906 A1, Sep. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 5/10 (2023.01); C02F 1/50 (2023.01); C02F 5/02 (2023.01); C02F 103/36 (2006.01); C02F 101/10 (2006.01); C02F 101/12 (2006.01); C02F 101/20 (2006.01); C02F 103/10 (2006.01)
CPC C02F 5/10 (2013.01) [C02F 1/50 (2013.01); C02F 5/02 (2013.01); C02F 2101/10 (2013.01); C02F 2101/101 (2013.01); C02F 2101/12 (2013.01); C02F 2101/203 (2013.01); C02F 2103/10 (2013.01); C02F 2103/365 (2013.01); C02F 2209/06 (2013.01); C02F 2303/04 (2013.01); C02F 2303/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for reducing scale formation from a target comprising:
contacting a target with at least about 2 ppm C1-C22 peroxycarboxylic acid forming composition comprising an ester of a polyhydric alcohol and C1-C22 carboxylic acid and hydrogen peroxide, wherein the peroxycarboxylic acid does not include sulfoperoxycarboxylic acids, wherein the target is contacted at a pH below about 10.5, wherein the contacting step provides the peroxycarboxylic acid composition to the target for at least about 1 minute and by means of a spray, a fog, or a foam, or by dipping all or part of the target into the peroxycarboxylic acid composition, and wherein the contacting step is conducted at a temperature ranging from about 0° C. to about 130° C.; and
reducing said scale formation.