US 11,859,155 B2
Hard surface cleaning compositions comprising phosphinosuccinic acid adducts and methods of use
Carter M. Silvernail, Saint Paul, MN (US); Erik C. Olson, Saint Paul, MN (US); Michel M. Lawrence, Saint Paul, MN (US); Richard D. Johnson, Saint Paul, MN (US); and Steven J. Lange, Saint Paul, MN (US)
Assigned to Ecolab USA Inc., Saint Paul, MN (US)
Filed by ECOLAB USA INC., Saint Paul, MN (US)
Filed on Jun. 4, 2021, as Appl. No. 17/303,682.
Application 17/303,682 is a continuation of application No. 15/974,130, filed on May 8, 2018, granted, now 11,053,458.
Application 15/974,130 is a continuation of application No. 14/260,901, filed on Apr. 24, 2014, granted, now 9,994,799, issued on Jun. 12, 2018.
Application 14/260,901 is a continuation in part of application No. 13/614,020, filed on Sep. 13, 2012, granted, now 8,871,699, issued on Oct. 28, 2014.
Application 13/614,020 is a continuation in part of application No. 13/965,339, filed on Aug. 13, 2013, granted, now 9,023,784, issued on May 5, 2015.
Prior Publication US 2021/0363467 A1, Nov. 25, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/36 (2006.01); C11D 3/04 (2006.01); C11D 3/08 (2006.01); C11D 3/37 (2006.01); C11D 3/395 (2006.01); B08B 7/00 (2006.01); B08B 9/20 (2006.01)
CPC C11D 3/365 (2013.01) [C11D 3/044 (2013.01); C11D 3/08 (2013.01)] 20 Claims
 
1. A method of reducing or preventing hardness accumulation on a hard surface comprising:
contacting a hard surface with a detergent composition comprising a phosphinosuccinic acid adduct comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts; an alkalinity source comprising an alkali metal hydroxide, metasilicate, and/or silicate; and an oxidizing agent comprising a chlorine, a hypochlorite and/or a chloramine, wherein a use solution of the detergent composition has a pH between about 10 and 13.5; and
reducing and/or preventing hardness build up on the hard surface.
 
11. A method of reducing or preventing hardness accumulation on a hard surface in a food, beverage and/or pharmaceutical cleaning application comprising:
contacting a hard surface within the application with an alkaline detergent composition comprising: a phosphinosuccinic acid adduct comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts; an alkalinity source comprising an alkali metal hydroxide, metasilicate, and/or silicate; and an oxidizing agent comprising a chlorine, a hypochlorite and/or a chloramine, wherein a use solution of the detergent composition has a pH between about 10 and 13.5; and
reducing and/or preventing hardness build up on the treated hard surface using a clean-in-place cleaning technique.