US 11,939,241 B2
Stable percarboxylic acid compositions and uses thereof
Junzhong Li, Apple Valley, MN (US); David McSherry, St. Paul, MN (US); Allison Brewster, St. Paul, MN (US); Richard Staub, Lakeview, MN (US); Renato De Paula, Sugar Land, TX (US); John Wilhelm Bolduc, Eagan, MN (US); Robert J. Ryther, St. Paul, MN (US); and Victor V. Keasler, Richmond, TX (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by Ecolab USA Inc., St. Paul, MN (US)
Filed on Oct. 21, 2021, as Appl. No. 17/507,772.
Application 15/867,616 is a division of application No. 15/076,516, filed on Mar. 21, 2016, granted, now 9,902,627, issued on Feb. 27, 2018.
Application 17/507,772 is a continuation of application No. 15/867,616, filed on Jan. 10, 2018, granted, now 11,180,385.
Application 15/076,516 is a continuation of application No. 13/844,515, filed on Mar. 15, 2013, granted, now 9,321,664, issued on Apr. 26, 2016.
Claims priority of provisional application 61/762,777, filed on Feb. 8, 2013.
Claims priority of provisional application 61/710,631, filed on Oct. 5, 2012.
Prior Publication US 2022/0041473 A1, Feb. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/40 (2023.01); A01N 25/22 (2006.01); C02F 1/50 (2023.01); C02F 1/68 (2023.01); C02F 1/72 (2023.01); C11D 3/39 (2006.01); C11D 7/04 (2006.01); C11D 7/26 (2006.01); C11D 7/32 (2006.01); C11D 7/36 (2006.01); C02F 101/32 (2006.01); C02F 103/00 (2006.01); C02F 103/02 (2006.01); C02F 103/10 (2006.01); C02F 103/42 (2006.01)
CPC C02F 1/40 (2013.01) [A01N 25/22 (2013.01); C02F 1/50 (2013.01); C02F 1/68 (2013.01); C02F 1/682 (2013.01); C02F 1/722 (2013.01); C11D 3/394 (2013.01); C11D 7/04 (2013.01); C11D 7/265 (2013.01); C11D 7/3281 (2013.01); C11D 7/36 (2013.01); C02F 2101/32 (2013.01); C02F 2103/007 (2013.01); C02F 2103/023 (2013.01); C02F 2103/10 (2013.01); C02F 2103/42 (2013.01); C02F 2303/02 (2013.01); C02F 2303/04 (2013.01); C02F 2305/023 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A method for non-refrigerated transport or storage of a peroxycarboxylic acid composition, comprising:
stabilizing the peroxycarboxylic acid composition with a first and second stabilizing agent that increases self-accelerating decomposition temperature (SADT) of the peroxycarboxylic acid composition to form a stabilized peroxycarboxylic acid composition having a SADT greater than about 45° C., wherein the stabilized peroxycarboxylic acid composition comprises:
1) a C1-C22 carboxylic acid;
2) a C1-C22 percarboxylic acid;
3) hydrogen peroxide;
4) a first stabilizing agent, which is a picolinic acid or a compound having the following Formula (IA):

OG Complex Work Unit Chemistry
wherein
R1 is OH or —NR1aR1b, wherein R1a and R1b are independently hydrogen or (C1-C6)alkyl;
R2 is OH or —NR2aR2b, wherein R2a and R2b are independently hydrogen or (C1-C6)alkyl;
each R3 is independently (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl; and
n is a number from zero to 3;
or a salt thereof;
or a compound having the following Formula (IB):

OG Complex Work Unit Chemistry
wherein
R1 is OH or —NR1aR1b, wherein R1a and R1b are independently hydrogen or (C1-C6)alkyl;
R2 is OH or —NR2aR2b, wherein R2a and R2b are independently hydrogen or (C1-C6)alkyl;
each R3 is independently (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl; and
n is a number from zero to 3;
or a salt thereof;
5) a second stabilizing agent, which is a compound having the following Formula (IIA):

OG Complex Work Unit Chemistry
wherein
R1, R2, R3, and R4 are independently hydrogen, (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl, or C6-20 aryl;
R5 is (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl; and
R6 is hydrogen, (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl;
or a compound having the following Formula (IIB):

OG Complex Work Unit Chemistry
wherein
R1, R2, and R3 are independently hydrogen, (C1-C6)alkyl, (C2-C6)alkenyl or (C2-C6)alkynyl, or C6-20 aryl;
or a salt thereof; and
wherein
said hydrogen peroxide has a concentration of at least about 0.1 wt-%, the C1-C22 percarboxylic acid has a concentration of at least about 2 times of the concentration of said hydrogen peroxide, and said stabilized peroxycarboxylic acid composition has a pH at about 4 or less; and
transporting or storing the stabilized peroxycarboxylic acid composition without refrigeration below 45° C.