ALKALINE DETERGENT CONTAINING MIXING ORGANIC AND INORGANIC SEQUESTRANTS RESULTING IN IMPROVED SOIL REMOVAL
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Abstract
Solid block alkaline detergent compositions are disclosed comprising a source of alkalinity, and other detergent additives including sequestrants. The solid block detergents of the invention used a mixed inorganic and organic sequestrant composition that successfully softens service water used in manufacturing aqueous detergents from the composition, but also obtains substantially improved organic soil removal on dishware or flatware. The solid block detergents of the invention comprise large masses of the chemical ingredients having a weight of greater than about 500 grams in a solid block product format that is typically dispensed using a spray on water dispenser that creates an aqueous concentrate that is used in a washing machine.
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Citations
40 Claims
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1-24. -24. (canceled)
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25. An alkaline detergent composition comprising:
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about 10 to 60 wt-% alkali metal carbonate; about 0.1 to about 20 wt-% surfactant; about 0.1 to 70 wt-% of a chelating agent selected from the group consisting of aminocarboxylic acid, polycarboxylate, and mixtures thereof; and about 0.1 to 4 wt-% secondary alkaline source; the composition comprising alkali metal carbonate and secondary alkaline source in an amount effective to provide the desired level of cleaning action yet avoid premature solidification of the composition by reacting with the other ingredients; the composition being in the form of a pellet or block maintained as a solid, and the composition being free from a phosphate and a phosphonate. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
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34. A method of cleaning an article comprising:
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providing a solid cleaning composition comprising about 10 to 60 wt-% alkali metal carbonate; about 0.1 to about 20 wt-% surfactant; about 0.1 to 70 wt-% of a chelating agent selected from the group consisting of aminocarboxylic acid, polycarboxylate, and mixtures thereof; and about 0.1 to 4 wt-% secondary alkaline source; the composition comprising alkali metal carbonate and secondary alkaline source in an amount effective to provide the desired level of cleaning action yet avoid premature solidification of the composition by reacting with the other ingredients; and the composition being in the form of a pellet or block maintained as a solid; dissolving a portion of the solid cleaning composition in water to form a use solution; and contacting the article with the use solution. - View Dependent Claims (35, 36, 37, 38, 39, 40)
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Specification