Stable solid block metal protecting warewashing detergent composition
First Claim
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1. A 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;
about 5 to 20 wt-% anhydrous sodium carbonate;
a binding agent comprising sufficient amounts of hydrated sodium carbonate and phosphonate, 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 and the composition provides metal protection.
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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.
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Citations
16 Claims
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1. A 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; about 5 to 20 wt-% anhydrous sodium carbonate; a binding agent comprising sufficient amounts of hydrated sodium carbonate and phosphonate, 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 and the composition provides metal protection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a solidified mixture comprising;
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10. A solid detergent composition comprising:
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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; and effective solidifying amount of binding agent comprising the hydrated sodium carbonate and the organic phosphonate; wherein the mixture hardens to a solid form and the composition provides metal protection.
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11. A solid detergent composition comprising:
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a solidified mixture comprising; an alkali metal silicate having a M2O;
SiO2ratio of about 1;
1 to 1;
5;about 10 to 80 wt-% of Na2CO3; an effective amount of an aminocarboxylic acid hardness sequestering agent; about 5 to 20 wt-% anhydrous sodium carbonate; and a binding agent comprising sufficient amounts of hydrated sodium carbonate an organic phosphonate aminocarboxylic acid and to form the composition; wherein the mixture hardens to a solid form and the composition provides metal protection. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification