US 11,725,162 B2
Alkaline cleaning compositions comprising an alkylamino hydroxy acid and/or secondary amine and methods of reducing metal corrosion
Jennifer Stokes, Saint Paul, MN (US); Carter M. Silvernail, Saint Paul, MN (US); Paul Frazer Schacht, Saint Paul, MN (US); and Anthony W. Erickson, Saint Paul, MN (US)
Assigned to Ecolab USA Inc., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Nov. 11, 2021, as Appl. No. 17/454,577.
Application 17/454,577 is a division of application No. 15/904,880, filed on Feb. 26, 2018, granted, now 11,198,837.
Claims priority of provisional application 62/464,864, filed on Feb. 28, 2017.
Prior Publication US 2022/0064574 A1, Mar. 3, 2022
Int. Cl. C11D 1/00 (2006.01); C11D 3/04 (2006.01); C11D 3/20 (2006.01); C11D 3/33 (2006.01); C11D 11/00 (2006.01); C11D 3/00 (2006.01); C11D 3/30 (2006.01); B08B 3/04 (2006.01); B08B 3/02 (2006.01); B08B 3/08 (2006.01); B08B 3/10 (2006.01)
CPC C11D 3/33 (2013.01) [B08B 3/022 (2013.01); B08B 3/041 (2013.01); B08B 3/08 (2013.01); B08B 3/10 (2013.01); C11D 1/00 (2013.01); C11D 3/0073 (2013.01); C11D 3/044 (2013.01); C11D 3/2086 (2013.01); C11D 3/30 (2013.01); C11D 11/0023 (2013.01); C11D 11/0029 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A hard surface cleaning composition comprising:
between about 35 wt. % and about 50 wt. % (active) of an alkalinity source, wherein the alkalinity source comprises an alkali metal hydroxide;
between about 0.5 wt. % to about 10 wt. % of an alkylamino hydroxy acid, wherein the alkylamino hydroxy acid comprises one or more 3-alkylamino-2-hydroxysuccinic acid compounds and/or salts thereof;
between about 30 wt. % and about 65 wt. % water; and
wherein the composition provides a pH of at least 11 upon dilution.