Detergent composition comprising phosphinosuccinic acid adducts and methods of use

• US 8,871,699 B2
• Filed: 09/13/2012
• Issued: 10/28/2014
• Est. Priority Date: 09/13/2012
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Inventors: Silvernail, Carter Martin, Olson, Erik C.
• Primary Examiner(s): Douyon, Lorna M
• Application Number:
  US13/614,020
• Publication Number:
  US 20140073549A1
• Time in Patent Office: 775 Days
• Field of Search: 510/228, 510/220, 510/224, 510/225, 510/229, 510/234, 510/445, 510/469, 510/477, 510/509, 510/511, 510/108, 510/221, 510/243, 510/272, 510/435, 134/25.2, 134/42
• US Class Current: 510/228
• CPC Class Codes: C11D 2111/16 Metals
• CPC Class Codes: C11D 2111/18 Glass; Plastics
• CPC Class Codes: C11D 3/044 Hydroxides or bases
• CPC Class Codes: C11D 3/08 Silicates
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/2082 Polycarboxylic acids-salts thereof
• CPC Class Codes: C11D 3/365 containing carboxyl groups

Abstract

Detergent compositions effective for controlling hard water scale accumulation are disclosed. Detergent compositions employing phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives with alkali metal carbonate and/or alkali metal hydroxide reduce had water scale accumulation on treated surfaces at alkaline conditions between about pH of 9 and 12.5. Methods employing the detergent compositions and preventing hard water scale accumulation are also provided.

Claims

1. A detergent composition comprising:

between about 1 wt-% and about 20 wt-% of a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis and oligomeric phosphinosuccinic acid adducts;

between 65 wt-% and about 90 wt-% of an alkalinity source selected from the group consisting of an alkali metal hydroxide, carbonate, metasilicate, and silicate; and

between about 10 wt-% and about 20 wt-% of water;

wherein a use solution of the detergent composition has a pH between about 9 and 12.5.

2. The composition of claim 1, further comprising a water soluble polymer.

3. The composition of claim 2, wherein the water soluble polymer is selected from the group consisting of a polycarboxylic acid and hydrophobically modified polycarboxylic acid.

4. The composition of claim 1, further comprising a nonionic surfactant.

5. The composition of claim 4, wherein the nonionic surfactant comprises ethylene oxide, propylene oxide, or a combination of ethylene and propylene oxide.

6. The composition of claim 1, wherein the phosphinosuccinic acid derivative comprises at least 10 mol % of an adduct comprising a ratio of succinic acid to phosphorus from about 1:

1 to 20;

1.

7. The composition of claim 1, wherein the phosphinosuccinic acid derivative is in an amount from about 5 wt-% to about 20 wt-%.

8. The composition of claim 7, wherein the phosphinosuccinic acid (I) and mono- (II), bis- (III) and oligomeric (IV) phosphinosuccinic acid adducts have the following formulas:

9. The composition of claim 1, where the use solution comprises from about 100-1500 ppm of an alkalinity source, from about 5-500 ppm phosphinosuccinic acid derivative and has a pH between about 9 and 12.5.

10. A detergent composition comprising:

between about 1 wt-% and about 20 wt-% of a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts;

between 65 wt-% and about 90 wt-% of an alkalinity source selected from the group consisting of an alkali metal hydroxide, carbonate, metasilicate, and silicate;

between about 0.1 wt-% and about 25 wt-% of a surfactant,

between about 10 wt-% and about 20 wt-% of water;

wherein a use solution of the detergent composition has a pH between about 9 and 12.5.

11. The composition of claim 10, wherein the surfactant is a nonionic surfactant comprising ethylene oxide, propylene oxide and combinations of ethylene and propylene oxide.

12. The composition of claim 11, wherein the phosphinosuccinic acid (I) and mono- (II), bis- (III) and oligomeric (IV) phosphinosuccinic acid adducts have the following formulas:

13. The composition of claim 10, wherein the detergent composition use solution comprises from about 100-1500 ppm of an alkalinity source, from about 1-500 ppm phosphinosuccinic acid derivative, from about 1-50 ppm of a nonionic surfactant and has a pH of about 9 and 12.5.

14. The composition of claim 10, wherein the composition comprises from about 5 wt-% to about 20 wt-% of the phosphinosuccinic acid derivative and from about 1 wt-% to about 10 wt-% of the surfactant, wherein the surfactant comprises a nonionic surfactant.

15. The composition of claim 10, wherein the phosphinosuccinic acid derivative comprises at least 10 mol % of an adduct comprising a ratio of succinic acid to phosphorus from about 1:

1 to 20;

1.

16. A method of cleaning while preventing hard water scale accumulation on a treated surface comprising:

applying a detergent composition to a substrate surface, wherein the detergent composition comprises between about 1 wt-% and about 20 wt-% of a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts, between 65 wt-% and about 90 wt-% of an alkalinity source selected from the group consisting of an alkali metal hydroxide, carbonate, metasilicate, silicate, and between about 10 wt-% and about 20 wt-% of water, and wherein the detergent composition is effective for preventing the formation, precipitation and/or deposition of hard water scale on the surface; and

generating a use solution of the detergent composition, wherein the detergent use solution has a pH between about 9 and 12.5.

17. The method of claim 16, where the surfaces are plastic, metal and/or glass surfaces.

18. The method of claim 16, wherein the use solution is generated within a ware washing machine.

19. The method of claim 16, wherein the detergent composition further comprises a nonionic surfactant.