US 11,950,595 B2
Acid/anionic antimicrobial and virucidal compositions and uses thereof
Catherine Hanson, Saint Paul, MN (US); Junzhong Li, Saint Paul, MN (US); David D. McSherry, Saint Paul, MN (US); Stacy Fawbush, Saint Paul, MN (US); Kaitlin Lake, Saint Paul, MN (US); Gerard Hinrichs, Saint Paul, MN (US); Joshua Luedtke, Saint Paul, MN (US); Richard Staub, Saint Paul, MN (US); and Derrick Anderson, Saint Paul, MN (US)
Assigned to Ecolab USA Inc., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Apr. 29, 2021, as Appl. No. 17/302,284.
Application 17/302,284 is a continuation of application No. 16/142,798, filed on Sep. 26, 2018, granted, now 11,026,422.
Claims priority of provisional application 62/563,461, filed on Sep. 26, 2017.
Prior Publication US 2021/0244025 A1, Aug. 12, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A01N 37/36 (2006.01); A01N 25/30 (2006.01); A01N 31/02 (2006.01); A01N 31/08 (2006.01); A01N 47/28 (2006.01); A61L 2/18 (2006.01); A61L 2/22 (2006.01)
CPC A01N 37/36 (2013.01) [A01N 25/30 (2013.01); A01N 31/02 (2013.01); A01N 31/08 (2013.01); A01N 47/28 (2013.01); A61L 2/18 (2013.01); A61L 2/22 (2013.01); A61L 2202/14 (2013.01); A61L 2202/24 (2013.01)] 19 Claims
 
1. A method of using an antimicrobial composition, comprising:
contacting an antimicrobial composition to a surface in need of treatment, wherein the antimicrobial composition comprises from about 20 wt-% to about 45 wt-% of at least one weak acid comprising lactic acid, citric acid, tartaric acid, malic acid, gluconic acid, formic acid, acetic acid, propionic acid, ascorbic acid, glutamic acid, levulinic acid, or a combination thereof; from about 8 wt-% to about 20 wt-% of at least one strong acid; at least one anionic surfactant comprising a sulfonate, sulfate and/or carboxylate; and water; and
providing at least a 3-log microbial reduction of a virus,
wherein the antimicrobial composition is free of a quaternary ammonium compound and additional carboxylic acids; and
wherein no rinse step is required and wherein the antimicrobial composition provides the no rinse step to a food contact surface.