US 12,252,672 B2
Rheology modified low foaming liquid antimicrobial compositions and methods of use thereof
Junzhong Li, Saint Paul, MN (US); Steven J. Lange, Saint Paul, MN (US); Richard Staub, Saint Paul, MN (US); and David D. McSherry, 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. 31, 2022, as Appl. No. 17/649,469.
Application 16/736,311 is a division of application No. 13/112,624, filed on May 20, 2011, granted, now 10,563,153, issued on Feb. 18, 2020.
Application 17/649,469 is a continuation of application No. 16/736,311, filed on Jan. 7, 2020, granted, now 11,268,049.
Claims priority of provisional application 61/346,804, filed on May 20, 2010.
Prior Publication US 2022/0154111 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/48 (2006.01); A23B 4/20 (2006.01); A23B 7/154 (2006.01); A23L 5/00 (2016.01); C11D 1/00 (2006.01); C11D 1/02 (2006.01); C11D 1/12 (2006.01); C11D 3/00 (2006.01); C11D 3/04 (2006.01); C11D 3/20 (2006.01)
CPC C11D 3/48 (2013.01) [A23B 4/20 (2013.01); A23B 7/154 (2013.01); A23L 5/57 (2016.08); C11D 1/008 (2013.01); C11D 1/02 (2013.01); C11D 1/12 (2013.01); C11D 3/0026 (2013.01); C11D 3/042 (2013.01); C11D 3/2075 (2013.01); C11D 3/2086 (2013.01); A23V 2002/00 (2013.01)] 19 Claims
 
1. A method for reducing a population of microorganisms on a surface comprising:
(a) providing a single phase aqueous low foaming antimicrobial concentrate composition comprising:
(i) at least about 25 wt % water;
(ii) one or more of an alkyl sulfate, an alkyl sulfonate, and/or an alkyl aryl sulfonate antimicrobial agent;
(iii) a defoaming agent;
(iv) an acidulant;
(v) a stabilizing agent; and
(vi) a thickening agent,
wherein the composition does not include a carboxylic acid;
wherein the composition has a viscosity of between about 50 centipoise and about 3500 centipoise, and the thickening agent is present in an amount effective such that the composition is phase stable under acidic conditions;
(b) diluting the composition; and
(c) contacting the surface with the diluted composition such that the population of microorganisms is reduced, wherein the composition does not need to be rinsed from the surface.