Solidification matrix comprising phosphinosuccinic acid derivatives
AssigneeEcolab USA Inc.
InventorsErik C. Olson, Carter M. Silvernail
Life of this patent
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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.
Claims20
A solid detergent composition comprising:
- a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts;
- a hydratable salt;
- and
- water;
- wherein the composition has less than about 2 wt-% phosphate, and wherein the solid detergent provides a use solution having a pH between about 9 and 12.5.
A method of forming a solid detergent composition, comprising:
- combining a hydratable salt and at least one functional component to form a powder pre-mix;
- and
- mixing the powder pre-mix with a liquid pre-mix, the liquid pre-mix comprising a phosphinosuccinic acid derivative and water, wherein the phosphinosuccinic acid derivative comprises a phosphinosuccinic acid (I) and mono-(II), bis-(III) and oligomeric (IV) phosphinosuccinic acid adducts having the following formulas:
- wherein if heated at a temperature of 122° F., the solid detergent composition is dimensionally stable and has a growth exponent of less than 3%, and wherein the detergent composition is effective for preventing the formation, precipitation and/or deposition of hard water scale on a treated surface.
Dependencies are inferred from the claim text.