Two step method of cleaning, sanitizing, and rinsing a surface

Patent metadata

Field	Value
Publication number	US-10358622-B2
Application number	US-201715660469-A
Country	US
Kind code	B2
Filing date	Jul 26, 2017
Priority date	Sep 13, 2012
Publication date	Jul 23, 2019
Grant date	Jul 23, 2019

Abstract

Methods employing detergent compositions comprising phosphinosuccinic acid oligomers (PSO) in combination with a sanitizing rinse aid are disclosed. The methods beneficially clean, sanitize and rinse a surface in an efficient two-step process. The detergent compositions employ phosphinosuccinic acid adducts, namely mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives, in combination with an alkalinity source and optionally polymers and/or surfactants. The sanitizing and rinsing compositions employ peroxycarboxylic acid compositions in combination with a nonionic defoaming and wetting surfactant.

First claim

What is claimed is:

1. A system for cleaning, sanitizing and rinsing a surface comprising:
(a) a detergent composition comprising: an alkalinity source selected from the group consisting of an alkali metal carbonate, alkali metal hydroxide, alkali metal silicate, alkali metal metasilicate, and combinations thereof; a phosphinosuccinic acid adduct comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts; and
(b) a sanitizing rinse composition comprising: a C1-C22 peroxycarboxylic acid; a C1-C22 carboxylic acid; hydrogen peroxide; and at least one nonionic defoaming surfactant and at least one nonionic wetting surfactant.

2. The system of claim 1 , wherein the phosphinosuccinic acid (I) and mono- (II), bis- (III) and oligomeric (IV) phosphinosuccinic acid adducts have the following formulas:

where M is selected from the group consisting of H + , Na + , K + , NH 4 + , and mixtures thereof, wherein m and n are 0 or an integer, and wherein m plus n is greater than 2.

3. The system of claim 2 , wherein the phosphinosuccinic acid adduct comprises at least 10 mol % of an adduct comprising a ratio of succinic acid to phosphorus from about 1:1 to 20:1.

4. The system of claim 3 , wherein the phosphinosuccinic acid adduct of formula I constitutes between about 1-40 wt-% of the phosphinosuccinic acid adduct, the phosphinosuccinic acid adduct of formula II constitutes between about 1-25 wt-% of the phosphinosuccinic acid adduct, the phosphinosuccinic acid adduct of formula III constitutes between about 10-60 wt-% of the phosphinosuccinic acid adduct, the phosphinosuccinic acid adduct of formula IV constitutes between about 20-70 wt-% of the phosphinosuccinic acid adduct.

5. The system of claim 1 , wherein a use solution of the detergent composition has a pH between about 9 and 12.5.

6. The system of claim 1 , wherein the detergent composition further comprises an additional nonionic surfactant, an anionic surfactant, water, an oxidizer, and/or combinations thereof.

7. The system of claim 1 , wherein the sanitizing rinse composition is a concentrate having less than about 2 wt-% peroxyacetic acid.

8. The system of claim 1 , wherein the sanitizing rinse composition when diluted from about 0.01% weight/volume to about 2% weight/volume provides at least a 5-log reduction in pathogenic organisms at a temperature of at least about 100° F.

9. The system of claim 1 , wherein the nonionic defoaming surfactant(s) and the nonionic wetting surfactant(s) of the sanitizing rinse composition comprises an alkyl-ethylene oxide-propylene oxide copolymer surfactant and an alcohol ethoxylate according to the following structure R—O—(CH 2 CH 2 O) n —H, wherein R is a C 1 -C 12 alkyl group and n is an integer in the range of 1 to 100.

10. A system for cleaning, sanitizing and rinsing a surface comprising:
(a) a concentrated detergent composition comprising: an alkalinity source selected from the group consisting of an alkali metal carbonate, alkali metal hydroxide, alkali metal silicate, alkali metal metasilicate, and combinations thereof; a phosphinosuccinic acid adduct comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts having the following formulas

wherein M is selected from the group consisting of H + , Na + , K + , NH 4 + , and mixtures thereof, wherein m and n are 0 or an integer, wherein m plus n is greater than 2, and wherein a use solution of the detergent composition has a pH between about 9 and 12.5; and
(b) a sanitizing rinse composition comprising: a C1-C22 peroxycarboxylic acid; a C1-C22 carboxylic acid; hydrogen peroxide; and at least one nonionic defoaming surfactant and at least one nonionic wetting surfactant, wherein the sanitizing rinse composition is a concentrate having less than about 4 wt-% C1-C22 peroxycarboxylic acid, and wherein the sanitizing rinse composition when diluted from about 0.01% weight/volume to about 2% weight/volume provides at least a 5-log reduction in pathogenic organisms at a temperature of at least about 100° F.

11. The system of claim 10 , wherein a use solution of the detergent composition comprises from about 100 ppm to about 20,000 ppm of the alkalinity source, and from about 1 ppm to about 2,000 ppm of the phosphinosuccinic acid adducts.

12. The system of claim 11 , wherein the phosphinosuccinic acid adduct of formula I constitutes between about 1-40 wt-% of the phosphinosuccinic acid adduct, the phosphinosuccinic acid adduct of formula II constitutes between about 1-25 wt-% of the phosphinosuccinic acid adduct, the phosphinosuccinic acid adduct of formula III constitutes between about 10-60 wt-% of the phosphinosuccinic acid adduct, the phosphinosuccinic acid adduct of formula IV constitutes between about 20-70 wt-% of the phosphinosuccinic acid adduct.

13. The system of claim 10 , wherein the phosphinosuccinic acid adduct constitutes between about 0.1-40 wt-% of the detergent composition, the alkalinity source constitutes between about 1-90 wt-% by weight of the detergent composition, and the detergent composition further comprises an additional nonionic surfactant.

14. The system of claim 10 , wherein the system reduces or prevents hardness accumulation and/or soil redeposition on the surface, and provides a spot-free and film-free surface.

15. The system of claim 10 , wherein the nonionic defoaming surfactant of the sanitizing rinse composition is an alkyl-ethylene oxide-propylene oxide copolymer surfactant and wherein the nonionic wetting surfactant of the sanitizing rinse composition is an alcohol ethoxylate according to the following structure R—O—(CH2CH2O) n-H, wherein R is a C1-C12 alkyl group and n is an integer in the range of 1 to 100.

16. The system of claim 15 , wherein the alkyl-ethylene oxide-propylene oxide copolymer surfactant of the sanitizing rinse composition has a single hydroxyl functional group per molecule according to the following structure Alkyl-(EO)m-(PO)n-POH, wherein m is an integer in the range from 1 to 20 and n is an integer in the range from 1 to 20.

17. The system of claim 10 , wherein the ratio of the nonionic defoaming surfactant(s) to the nonionic wetting surfactant(s) of the sanitizing rinse composition is from about 1.5:1 to about 10:1.

18. The system of claim 10 , wherein the C 1 -C 22 peroxycarboxylic acid of the sanitizing rinse composition is a C 2 -C 20 peroxycarboxylic acid, and wherein the C 1 -C 22 carboxylic acid of the sanitizing rinse composition is a C 2 -C 20 carboxylic acid.

19. The system of claim 10 , wherein the sanitizing rinse composition further comprises at least one additional agent selected from the group consisting of a hydrotrope or coupling agent, a solvent, a stabilizing agent and combinations thereof.

20. The system of claim 10 , wherein the C 1 -C 22 peroxycarboxylic acid comprises from about 1 wt-% to about 40 wt-%, the C 1 -C 22 carboxylic acid comprises from about 1 wt-% to about 80 wt-%, the hydrogen peroxide comprises from about 1 wt-% to about 80 wt-%, and the nonionic surfactant/0 comprise from about 1 wt-% to about 50 wt-% of the sanitizing rinse composition.

Assignees

• Ecolab Usa Inc

Inventors

• Stokes Jennifer
• Silvernail Carter M
• Olson Erik C
• Lange Steven J
• Li Junzhong
• Sun Xin
• Brewster Allison
• Staub Richard

Classifications

• C11D3/044

  Hydroxides or bases · CPC title

• C11D3/48 Primary

  Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions · CPC title

• C11D3/08

  Silicates · CPC title

• C11D3/10

  Carbonates {; Bicarbonates} · CPC title

• C11D3/365

  containing carboxyl groups · CPC title