Hard surface cleaning compositions comprising phosphinosuccinic acid adducts and methods of use

Patent metadata

Field	Value
Publication number	US-11053458-B2
Application number	US-201815974130-A
Country	US
Kind code	B2
Filing date	May 8, 2018
Priority date	Sep 13, 2012
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

Methods employing detergent compositions effective for reducing hard water scale and accumulation on hard surfaces, namely within food, beverage and pharmaceutical applications are disclosed. The detergent compositions employ phosphinosuccinic acid adducts in combination with an alkalinity source and optionally polymers, surfactants and/or oxidizers, providing alkaline compositions having a pH between about 10 and 13.5.

First claim

What is claimed is:

1. A detergent composition comprising:
a phosphinosuccinic acid adduct comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts;
a water soluble polymer that is a polycarboxylic acid or a hydrophobically modified polycarboxylic acid;
from about 1 wt-% to about 40 wt-% of an alkalinity source comprising an alkali metal hydroxide, metasilicate, and/or silicate, wherein the detergent composition does not contain an alkali metal carbonate; and
an oxidizing agent comprising a chlorine, a hypochlorite and/or a chloramine, wherein a use solution of the detergent composition comprises from about 1 ppm to about 500 ppm of the phosphinosuccinic acid adduct and from about 1 ppm to about 500 ppm of the water soluble polymer, and has a pH between about 10 and 13.5.

2. The composition of claim 1 , 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.

3. The composition 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 plus n is greater than 2.

4. The composition 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 composition of claim 1 , where the use solution comprises from about 100-20,000 ppm of the alkalinity source.

6. The composition of claim 1 , further comprising a nonionic surfactant and/or an anionic surfactant, water, and/or combinations thereof.

7. The composition of claim 1 , wherein the detergent composition comprises the water soluble polymer in an amount of from about 0.1 wt-% to about 45 wt-%.

8. The composition of claim 4 , wherein the phosphinosuccinic acid adduct constitutes between about 0.1-40 wt-% of the detergent composition.

9. The composition of claim 4 , wherein the phosphinosuccinic acid adduct constitutes between about 0.1-20 wt-% of the detergent composition.

10. A method of reducing or preventing hardness accumulation on a hard surface comprising:
contacting a hard surface with the detergent composition according to claim 1 ; and
reducing and/or preventing hardness build up on the hard surface.

11. The method of claim 10 , wherein the phosphinosuccinic acid adduct comprises the following formulas of phosphinosuccinic acid adducts:

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

12. The method 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 method of claim 10 , wherein the phosphinosuccinic acid adduct constitutes between about 0.1-40 wt-% of the detergent composition and the composition further comprises an anionic surfactant.

14. The method of claim 10 , further comprises the first step of generating a use solution of the detergent composition comprising from about 100 ppm to about 20,000 ppm of the alkalinity source, wherein the hard surface contacted with the detergent composition use solution is an interior or exterior hard surface.

15. 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 the detergent composition according to claim 1 ; comprising: a phosphinosuccinic acid adduct and
reducing and/or preventing hardness build up on the treated hard surface.

16. The method of claim 15 , wherein the phosphinosuccinic acid adduct comprises the following formulas of phosphinosuccinic acid adducts:

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

17. The method of claim 15 , wherein the alkaline detergent composition further comprises an anionic surfactant.

18. The method of claim 15 , wherein the use solution of the detergent composition comprises from about 1000 ppm to about 20,000 ppm of the alkalinity source.

19. The method of claim 15 , wherein the use solution of the detergent composition comprises from about 500 ppm to about 10,000 ppm of the alkalinity source.

Assignees

• Ecolab Usa Inc

Inventors

• Silvernail Carter M
• Olson Erik C
• Lawrence Michel M
• Johnson Richard D
• Lange Steven J

Classifications

• C11D3/365 Primary

  containing carboxyl groups · CPC title

• C11D3/08

  Silicates · CPC title

• C11D3/044

  Hydroxides or bases · CPC title