US 11,788,033 B2
Detergent composition containing a tetrapolymer
Kelly Anne Rightmire, Saint Paul, MN (US); and Carter M. Silvernail, 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. 10, 2022, as Appl. No. 17/654,265.
Application 17/654,265 is a continuation of application No. 16/947,568, filed on Aug. 6, 2020, granted, now 11,306,276.
Claims priority of provisional application 62/883,222, filed on Aug. 6, 2019.
Prior Publication US 2022/0195345 A1, Jun. 23, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 1/72 (2006.01); C11D 1/722 (2006.01); C11D 3/06 (2006.01); C11D 3/08 (2006.01); C11D 3/10 (2006.01); C11D 3/37 (2006.01); B08B 3/04 (2006.01); C11D 3/04 (2006.01); C11D 3/12 (2006.01); C11D 3/20 (2006.01)
CPC C11D 3/3765 (2013.01) [C11D 1/722 (2013.01); C11D 3/044 (2013.01); C11D 3/10 (2013.01); C11D 3/1213 (2013.01); C11D 3/201 (2013.01); C11D 3/2065 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of cleaning an article comprising:
contacting an article with a cleaning composition comprising a source of alkalinity, a surfactant, and a scale inhibiting polymer consisting of a maleic acid tetrapolymer and optionally one or more polycarboxylic acid homopolymers.