Back to results
US 6,660,707 B2Granted
Stable solid block metal protecting warewashing detergent composition
AssigneeEcolab Inc.
InventorsSteven E. Lentsch, Victor F. Man, Keith E. Olson
Life of this patent
Estimating the term…
Abstract
The dimensionally stable alkaline solid block warewashing detergent uses an E-form binder forming a solid comprising a sodium carbonate source of alkalinity, a metal corrosion protecting alkali metal silicate composition, a sequestrant, a surfactant package and other optional material. The solid block is dimensionally stable and highly effective in removing soil from the surfaces of dishware in the institutional and industrial environment. The E-form hydrate comprises an organic phosphonate and a hydrated carbonate.
Claims84
An extruded or cast solid detergent composition comprising:
- a solidified mixture comprising:
- bleaching agent, enzyme, or bleaching agent and enzyme;
- an alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- about 10 to 80 wt-% of Na2CO3;
- an effective amount of an organic phosphonate hardness sequestering agent comprising a potassium salt;
- about 5 to 20 wt-% anhydrous sodium carbonate;
- a binding agent comprising sufficient amounts of hydrated sodium carbonate and phosphonate comprising a potassium salt, to form the composition;
- and
- no second source of alkalinity or less than a solidification interfering amount of a second source of alkalinity;
- wherein the mixture hardens to a solid form within about1 minute to about 20 minutes and the composition provides metal protection.
7 more elements
An extruded or cast solid detergent compositin comprising:
- a solidified mixture comprising:
- bleaching agent, enzyme, or bleaching agent and enzyme;
- about 10 to 80 wt-% of Na2CO3;
- an alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- and
- an effective amount of an organic phosphonate hardness sequestering agent comprising a potassium salt;
- wherein the mixture hardens to a solid form within about 1 minute to about 20 minutes, and the composition comprises about 5 to 20 wt-% anhydrous sodium carbonate and a binding agent comprising sufficient amounts of hydrated sodium carbonate and phosphonate comprising a potassium salt, to form the composition, and the composition provides metal protection and comprises either no second source of alkalinity or less than a solidification interfering amount of a second source of alkalinity.
4 more elements
An extruded or cast solid detergent composition comprising:
- solidified mixture comprising:
- alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- about 10 to 80 wt-% of Na2CO3, comprising anhydrous sodium carbonate and hydrated sodium carbonate;
- organic phosphonate comprising potassium salt;
- and
- effective solidifying amount of binding agent comprising the hydrated sodium carbonate and the organic phosphonate comprising potassium salt;
- wherein the mixture hardens to a solid form within about 1 minute to about 20 minutes and the composition provides metal protection.
4 more elements
An extruded or cast solid detergent composition comprising:
- a solidified mixture comprising:
- about 10 to 80 wt-% alkaline source;
- the alkaline source comprising alkali metal hydroxide, alkali metal carbonate, alkali metal silicate or metasilicate, alkali metal borate, ethanolamines, amines, or mixtures therof;
- alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- an effective amount of an organic phosphonate hardness sequestering agent comprising a potassium salt.
2 more elements
An extruded or cast solid detergent composition comprising:
- a solidified mixture comprising:
- an alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- about 10 to 80 wt-% of Na2CO3;
- an effective amount of an aminocarboxylate hardness sequestering agent;
- about 5 to 20 wt-% anhydrous sodium carbonate;
- and
- a binding agent comprising sufficient amounts of hydrated sodium carbonate and aminocarboxylate to form the composition;
- wherein the mixture hardens to a solid form within about 1 minute to about 20 minutes and the composition provides metal protection.
5 more elements
A method of cleaning ware with a metal protecting anticorrosion alkaline detergent, the method comprising;
- providing a solid composition formed by solidifying a mixture which hardens to a solid form within about 1 minute to about 20 minutes, the mixture comprising:
- bleaching agent, enzyme, or bleaching agent and enzyme;
- an alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- about 10 to 80 wt-% of Na2CO3;
- an effective amount of an organic phosphonate hardness sequestering agent comprising a potassium salt;
- about 5 to 20 wt-% anhydrous sodium carbonate;
- a binding agent comprising sufficient amounts of hydrated sodium carbonate and phosphonate comprising a potassium salt, to form the composition;
- and
- no second source of alkalinity or less than a solidification interfering amount of a second source of alkalinity;
- dissolving a portion of the solid composition in a solvent to form an alkaline detergent solution;
- and
- contacting ware with the alkaline detergent solution.
9 more elements
A method of cleaning ware with a metal protecting anticorrosion alkaline detergent, the method comprising:
- providing a solid composition formed by solidifying a mixture which hardens to a solid form within about 1 minute to about 20 minutes, the mixture comprising:
- alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- about 10 to 80 wt-% of Na2CO3, comprising anhydrous sodium carbonate and hydrated sodium carbonate;
- organic phosphate comprising potassium salt;
- and
- effective solidifying amount of binding agent comprising the hydrated sodium carbonate and the organic phosphonate comprising potassium salt;
- dissolving a portion of the solid composition in a solvent to form an alkaline detergent solution;
- and
- contacting ware with the alkaline detergent solution.
6 more elements
A method of cleaning ware with a metal protecting anticorrosion alkaline detergent, the method comprising:
- providing a solid composition formed by solidifying a mixture, the mixture comprising:
- about 10 to 80 wt-% alkaline source;
- the alkaline source comprising alkali metal hydroxide, alkali metal carbonate, alkali metal silicate or metasilicate, alkali metal borate, ethanolamines, amines, or mixtures thereof;
- alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- and
- an effective amount of an organic phosphonate hardness sequestering agent comprising a potassium salt;
- dissolving a portion of the solid composition in a solvent to form an alkaline detergent solution;
- and
- contacting ware with the alkaline detergent solution.
6 more elements
A method of cleaning ware with a metal protecting anticorrosion alkaline detergent, the method comprising:
- providing a solid composition formed by solidifying a mixture which hardens to a solid form within about 1 minute to about 20 minutes, the mixture comprising:
- an alkali metal silicate having a M2O:SiO2 ratio of about 1:1 to 1:5;
- about 10 to 80 wt-% of Na2CO3;
- an effective amount of an aminocarboxylate hardness sequestering agent;
- about 5 to 20 wt-% anhydrous sodium carbonate;
- and
- a binding agent comprising sufficient amounts of hydrated sodium carbonate and aminocarboxylate to form the composition;
- dissolving a portion of the solid composition in a solvent to form an alkaline detergent solution;
- and
- contacting ware with the alkaline detergent solution.
7 more elements
Dependencies are inferred from the claim text.