US 12,247,185 B2
Multipurpose alkaline compositions and methods of use
Erik C. Olson, Saint Paul, MN (US); Hilina Emiru, Saint Paul, MN (US); Derrick Anderson, Saint Paul, MN (US); Kelly Anne Rightmire, Saint Paul, MN (US); and Timothy Meier, Saint Paul, MN (US)
Assigned to ECOLAB USA INC., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Mar. 12, 2021, as Appl. No. 17/249,784.
Claims priority of provisional application 63/198,957, filed on Nov. 25, 2020.
Prior Publication US 2022/0162526 A1, May 26, 2022
Int. Cl. C11D 1/02 (2006.01); C11D 1/22 (2006.01); C11D 1/66 (2006.01); C11D 1/75 (2006.01); C11D 3/30 (2006.01); C11D 3/33 (2006.01); C11D 3/43 (2006.01); C11D 3/44 (2006.01)
CPC C11D 3/33 (2013.01) [C11D 1/22 (2013.01); C11D 1/66 (2013.01); C11D 1/75 (2013.01); C11D 3/30 (2013.01); C11D 3/43 (2013.01); C11D 2111/16 (2024.01); C11D 2111/18 (2024.01)] 18 Claims
OG exemplary drawing
 
1. A composition comprising:
from 7 wt-% to about 50 wt-% non-hydroxide alkalinity source that is monoethanolamine, diethanolamine, triethanolamine or a combination thereof;
from about 1 wt-% to about 50 wt-% anionic surfactant;
from about 1 wt-% to about 75 wt-% solvent or solvent system consisting of aromatic alcohol(s), alkanol amine(s), ether amine(s), glycol ether(s), ester(s), or combinations thereof, wherein said solvent or solvent system is the sole solvent or solvent system present in the composition other than water;
from about 0.5 wt-% to about 25 wt-% chelant; and water,
wherein a use solution of the composition has a pH of from about 10 to about 11.5;
wherein the composition does not comprise a nonionic surfactant, does not comprise an amphoteric surfactant, and does not comprise a zwitterionic surfactant; and
wherein the composition provides substantially similar or superior cleaning efficacy compared to hydroxide-based and corrosive, highly alkaline compositions.