Warewashing composition comprising a corrosion inhibitor with Al and Zn ions
First Claim
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1. A warewashing detergent composition comprising:
- (a) a cleaning agent comprising about 0.5 wt. % to about 20 wt. % surfactant based on the weight of the detergent composition;
(b) an alkaline source in an amount effective to provide a use solution having a pH of at least about 8 and obtained by diluting the warewashing detergent composition with water;
(c) a corrosion inhibitor in an amount sufficient for reducing corrosion and/or etching of glass, the corrosion inhibitor comprising;
(i) a source of aluminum ion; and
(ii) a source of zinc ion,wherein the amount of the source of aluminum ion and the source of zinc ion is sufficient to provide a weight ratio of aluminum ion to zinc ion of about 6;
1 to about 1;
20; and
(d) a peroxygen or active oxygen source bleaching agent.
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Abstract
A warewashing detergent composition is provided according to the invention. The warewashing detergent composition includes a cleaning agent, an alkaline source, and a corrosion inhibitor. The cleaning agent comprises a detersive amount of a surfactant. The alkaline source is provided in an amount effective to provide a use solution having a pH of at least about 8. The corrosion inhibitor includes a source of aluminum ion and a source of zinc ion. Methods for using and manufacturing a warewashing detergent composition are provided.
75 Citations
27 Claims
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1. A warewashing detergent composition comprising:
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(a) a cleaning agent comprising about 0.5 wt. % to about 20 wt. % surfactant based on the weight of the detergent composition; (b) an alkaline source in an amount effective to provide a use solution having a pH of at least about 8 and obtained by diluting the warewashing detergent composition with water; (c) a corrosion inhibitor in an amount sufficient for reducing corrosion and/or etching of glass, the corrosion inhibitor comprising; (i) a source of aluminum ion; and (ii) a source of zinc ion, wherein the amount of the source of aluminum ion and the source of zinc ion is sufficient to provide a weight ratio of aluminum ion to zinc ion of about 6;
1 to about 1;
20; and(d) a peroxygen or active oxygen source bleaching agent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 22, 23, 24)
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13. A method for using a warewashing detergent composition, the method comprising:
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(a) diluting a warewashing detergent composition provided as a solid as a result of extrusion or casting with water at a dilution ratio of water to warewashing detergent composition of at least about 20;
1, wherein the warewashing detergent composition comprises;(i) a cleaning agent comprising about 0.5 wt. % to about 20 wt. % surfactant based on the weight of the detergent composition; (ii) an alkaline source in an amount effective to provide a use solution having a pH of at least about 8; (iii) a corrosion inhibitor in an amount sufficient for reducing corrosion and/or etching of glass, the corrosion inhibitor comprising a source of aluminum ion and a source of zinc ion sufficient to provide a weight ratio of aluminum ion to zinc ion of about 6;
1 to about 1;
20;(iv) a peroxygen or active oxygen source bleaching agent; and (b) washing ware with the use solution in an automatic dishwashing machine. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 25, 26, 27)
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Specification