US 11,723,364 B2
Acidic biofilm remediation
Gregory G. Griese, Saint Paul, MN (US); Mark Levitt, Saint Paul, MN (US); Richard K. Staub, Saint Paul, MN (US); and Stefanie Gilbreth, Saint Paul, MN (US)
Assigned to Ecolab USA Inc., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Sep. 20, 2021, as Appl. No. 17/448,153.
Application 17/448,153 is a continuation of application No. 16/689,442, filed on Nov. 20, 2019, granted, now 11,122,803.
Application 16/689,442 is a continuation of application No. 16/291,815, filed on Mar. 4, 2019, granted, now 10,517,293, issued on Dec. 31, 2019.
Application 16/291,815 is a continuation of application No. 16/110,821, filed on Aug. 23, 2018, granted, now 10,238,108, issued on Mar. 26, 2019.
Application 16/110,821 is a continuation of application No. 13/045,734, filed on Mar. 11, 2011, granted, now 10,085,447, issued on Oct. 2, 2018.
Prior Publication US 2022/0071206 A1, Mar. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A01N 41/04 (2006.01)
CPC A01N 41/04 (2013.01) 18 Claims
 
1. A biocidal composition comprising:
from about 0.2 to about 2 wt-% of an anionic surfactant, wherein the anionic surfactant is not a C1-C5 organocarboxylic acid and is a sulfonated acid;
from about 0.8 to about 2 wt-% of a soluble organic solvent in dilution; and
from about 0.5 to about 5 wt-% of a sparingly soluble organic solvent in dilution;
wherein the composition has a pH of less than about 7 and has sanitizing efficacy against biofilm.