Warewashing composition for use in automatic dishwashing machines, and methods for manufacturing and using
First Claim
1. A warewashing detergent composition comprising:
- (a) a cleaning agent comprising a detersive amount of a surfactant;
(b) an alkaline source in an amount effective to provide a use composition having a pH of at least about 8 and obtained by diluting the warewashing detergent composition with water; and
(c) a corrosion inhibitor in an amount sufficient for reducing corrosion of glass, the corrosion inhibitor comprising;
(i) a source of aluminum ion;
(ii) a source of zinc ion; and
(iii) wherein the source of aluminum ion and the source of zinc ion are present in amounts sufficient to provide a use composition having a weight ratio of zinc ion to aluminum ion of at least about 2;
1.
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Accused Products
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 composition having a pH of at least about 8. The corrosion inhibitor includes a source of aluminum ion and a source of zinc ion. The relative amounts of the source of zinc ion and the source of aluminum ion can be controlled to reduce visible filming when the warewashing detergent composition is used in the presence of hard water. Methods for using and manufacturing a warewashing detergent composition are provided.
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Citations
57 Claims
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1. A warewashing detergent composition comprising:
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(a) a cleaning agent comprising a detersive amount of a surfactant;
(b) an alkaline source in an amount effective to provide a use composition having a pH of at least about 8 and obtained by diluting the warewashing detergent composition with water; and
(c) a corrosion inhibitor in an amount sufficient for reducing corrosion of glass, the corrosion inhibitor comprising;
(i) a source of aluminum ion;
(ii) a source of zinc ion; and
(iii) wherein the source of aluminum ion and the source of zinc ion are present in amounts sufficient to provide a use composition having a weight ratio of zinc ion to aluminum ion of at least about 2;
1. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A warewashing detergent composition comprising:
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(a) a cleaning agent comprising a detersive amount of a surfactant;
(b) an alkaline source in an amount effective to provide the warewashing detergent composition with a pH of at least about 8; and
(c) between about 6 ppm and about 300 ppm of a corrosion inhibitor for reducing corrosion of glass, the corrosion inhibitor comprising a zinc ion and an aluminum ion at a weight ratio of the zinc ion to the aluminum ion of at least about 2;
1. - View Dependent Claims (17, 18)
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19. A warewashing detergent composition comprising:
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(a) a cleaning agent comprising a detersive amount of a surfactant;
(b) an alkaline source in an amount effective to provide the warewashing detergent composition with a pH of at least about 8 when the warewashing detergent composition is provided as a use composition; and
(c) between about 0.5 wt. % and about 25 wt. % of a corrosion inhibitor for reducing corrosion of glass, the corrosion inhibitor comprising a source of zinc ion and a source of aluminum ion at a weight ratio of zinc ion to aluminum ion of at least about 2;
1. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A method for using a warewashing detergent composition, the method comprising:
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(a) diluting a warewashing detergent composition 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 a detersive amount of a surfactant;
(ii) an alkaline source in an amount effective to provide a use composition having a pH of at least about 8;
(iii) a corrosion inhibitor in an amount sufficient for reducing corrosion of glass, the corrosion inhibitor comprising a source of zinc ion and a source of aluminum ion in amounts sufficient to provide a use composition comprising zinc ion and aluminum ion at a weight ratio of zinc ion to aluminum ion of at least about 2;
1; and
(b) washing ware with the use composition in an automatic dishwashing machine. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A method for using a detergent composition, the method comprising:
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(a) diluting a detergent composition with water at a dilution ratio of water to detergent composition of at least about 20;
1, wherein the detergent composition comprises;
(i) a cleaning agent comprising a detersive amount of a surfactant;
(ii) a corrosion inhibitor in an amount sufficient for reducing corrosion of glass, the corrosion inhibitor comprising a source of zinc ion and a source of aluminum ion in amounts sufficient to provide a use composition comprising zinc ion and aluminum ion at a weight ratio of zinc ion to aluminum ion of at least about 2;
1; and
(b) washing a hard surface with the use composition. - View Dependent Claims (52, 53)
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54. A method for manufacturing a warewashing detergent composition, the method comprising:
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(a) providing an amount of corrosion inhibitor in a warewashing detergent composition concentrate sufficient to provide a level of corrosion inhibitor in a use composition as a result of diluting the warewashing detergent concentrate with water at a ratio of water to the warewashing detergent concentrate of at least about 20;
1 corresponding to the following formula;
wherein the alkalinity refers to the alkalinity in ppm of the use composition, the builder refers to the amount of builder in ppm in the use composition, the hardness refers to the amount of hardness in grains per gallon in the use composition, and the food soil refers to the expected amount of food soil in grams per gallon in the use composition; and
wherein the corrosion inhibitor comprises a weight ratio of zinc ion to aluminum ion of between about 20;
1 and about 2;
1, and the warewashing detergent composition concentrate further comprises a cleaning agent. - View Dependent Claims (55, 56)
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57. A warewashing detergent composition comprising:
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(a) a cleaning agent comprising a detersive amount of a surfactant; and
(b) a corrosion inhibitor in an amount sufficient for reducing corrosion of glass, the corrosion inhibitor comprising;
(i) a source of aluminum ion;
(ii) a source of zinc ion; and
(iii) wherein the source of aluminum ion and the source of zinc ion are present in amounts sufficient to provide a use composition having a weight ratio of zinc ion to aluminum ion of at least about 2;
1.
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Specification