	US 12,241,046 B2
	Use of urea or a urea/chelator combination to chemically stabilize peroxycarboxylic acid and peroxide formulations
Chris Nagel, Saint Paul, MN (US); and Junzhong Li, Saint Paul, MN (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Jan. 9, 2024, as Appl. No. 18/408,068.
Application 18/408,068 is a continuation of application No. 17/248,919, filed on Feb. 12, 2021, granted, now 11,905,498.
Claims priority of provisional application 62/975,340, filed on Feb. 12, 2020.
Prior Publication US 2024/0141261 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/20 (2006.01); A01N 25/22 (2006.01); A01N 59/00 (2006.01); C11D 3/04 (2006.01); C11D 3/32 (2006.01); C11D 3/34 (2006.01); C11D 3/36 (2006.01); C11D 3/39 (2006.01)

CPC C11D 3/394 (2013.01) [A01N 25/22 (2013.01); A01N 59/00 (2013.01); C11D 3/042 (2013.01); C11D 3/2075 (2013.01); C11D 3/2079 (2013.01); C11D 3/32 (2013.01); C11D 3/3409 (2013.01); C11D 3/361 (2013.01); C11D 3/3902 (2013.01); C11D 3/3942 (2013.01); C11D 3/3945 (2013.01)]

19 Claims

1. A food safe stabilized equilibrium peroxide-containing composition comprising:

from about 20 wt-% to about 70 wt % of hydrogen peroxide based on the total weight of the peroxide-containing composition;

a C₁-C₂₂peroxycarboxylic acid;

a C₁-C₂₂carboxylic acid;

a stabilizing agent comprising urea;

an additional stabilizing agent and/or an acid additive comprising an organic acid, an inorganic acid, or a combination thereof; and

water;

wherein the urea stabilizes the peroxide-containing composition without an additional stabilizing agent or reduces the concentration of the additional stabilizing agent to less than 3 wt-%.