Solidification matrix comprising phosphinosuccinic acid derivatives

• US 8,748,365 B2
• Filed: 09/13/2012
• Issued: 06/10/2014
• Est. Priority Date: 09/13/2012
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Inventors: Olson, Erik C., Silvernail, Carter M.
• Primary Examiner(s): Douyon, Lorna M
• Application Number:
  US13/614,150
• Publication Number:
  US 20140073550A1
• Time in Patent Office: 635 Days
• Field of Search: 510/228, 510/220, 510/224, 510/234, 510/445, 510/469, 510/509, 510/108, 510/294, 510/298, 510/446, 510/451
• US Class Current: 510/228
• CPC Class Codes: C11D 17/0047 Detergents in the form of bars or tablets
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/365 containing carboxyl groups

Abstract

Stability enhancement agents for use in a solidification matrices and solid detergent compositions are described. Stability enhancement is provided by a hydratable salt, water and phosphinosuccinic acid (PSO) derivative binding agents forming a dimensionally stable composition. Preferred phosphinosuccinic acid (PSO) derivatives include phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives. The stability enhancement composition for use in a solid detergent and solid detergent compositions are preferably biodegradable and substantially free of phosphate and NTA-free.

Claims

1. A solid detergent composition comprising:

between about 0.1 wt-% and about 20 wt-% a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts;

between about 0.1 wt-% and about 50 wt-% water;

between about 40 wt-% and about 90 wt-% sodium carbonate; and

between about 0.5 wt-% and about 10 wt-% surfactant;

wherein the solid detergent provides a use solution having a pH between about 9 and 12.5,

wherein the solid detergent composition has less than about 2 wt-% phosphate, and

wherein the solid detergent composition is dimensionally stable and has a growth exponent of less than 3% if heated at a temperature of 122°

F.

2. 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:

3. 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.

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, further comprising at least one functional ingredient selected from the group consisting of:

chelating agents, sequestering agents, inorganic detergents, organic detergents, alkaline sources, builders, water conditioners, rinse aids, hardening agents, bleaching agents, sanitizers, activators, fillers, defoaming agents, anti-redeposition agents, optical brighteners, dyes, odorants, stabilizing agents, dispersants, enzymes, corrosion inhibitors, thickeners and solubility modifiers.

7. A method of forming a solid detergent composition according to claim 1, comprising:

combining the sodium carbonate and the surfactant to form a powder pre-mix; and

mixing the powder pre-mix with a liquid pre-mix, the liquid pre-mix comprising the phosphinosuccinic acid derivative and water,

and wherein the detergent composition is effective for preventing the formation, precipitation and/or deposition of hard water scale on a treated surface.

8. The method of claim 7, wherein the detergent composition is a cast, pressed, or extruded solid.

9. The method of claim 7, wherein the treated surfaces are plastic, metal and/or glass surfaces.