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US RE32,763 EGranted
Cast detergent-containing article and method of making and using
AssigneeEcolab Inc.
InventorsPeter J. Fernholtz, James L. Copeland, Richard C. Penttila
Life of this patent
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AssigneeEcolab Inc.
InventorsPeter J. Fernholtz, James L. Copeland, Richard C. Penttila
Estimating the term…
Solid cast detergent-containing articles are produced for use in automatic washing machines. A liquid detergent composition is cast into a mold where it is allowed to solidify. The solid cast detergent, surrounded on all but its upper surface by the mold, is used in automatic washing machines having a dispensing device designed to dispense a liquid aqueous detergent formed from the solid cast detergent using an impinging liquid spray. The liquid aqueous detergent flows out of the dispensing device generally simultaneously with its formation in the dispenser. The cast detergent composition includes an alkaline hydratable chemical and optionally further includes one or more preformed cores or plugs comprising an available chlorine source, a defoamer, or the like.
A process for forming a three-dimensional, uniform solidi , casti, detergent for ware and hard surface washing within a receptacle-shaped mold which comprises:
A process for forming a three-dimensional, uniform , solid , cast detergent for ware and other hard surface washing within a receptacle-shaped mold which comprises:
The process of claim [10] 11 wherein said hardness sequestering agent is added to the aqueous solution maintained at a temperature of 55.degree.-.Badd.[70].Baddend. 85 .degree. C. and said hardness sequestering agent is sodium tripolyphosphate. [
A method of making an article of commerce incorporating a warewashing detergent composition which comprises:
The method of claim [18] 19 wherein said castable liquid detergent composition comprises:
[28. A method for forming an article of commerce incorporating a uniform, cast detergent composition which comprises:
[29. The method of claim 26 wherein the mold in which the composition was cast and solidified is a container for the detergent.]
[30. The method of claim 29 wherein the article further comprises a cover attached to the container.]
[31. The method of claim 28 wherein the article comprises at least one preformed core surrounded by and in contact with the detergent on at least one side of the core.]
[32. The method of claim 31 wherein the preformed core comprises a material selected from the group consisting of a defoamer and a solid, available chlorine-containing component.]
[33. The method of claim 32 comprising a plurality of preformed cores, at least one of which comprises a solid, available chlorine-containing component.]
[34. The method of claim 33 wherein the preformed core has been coated with an inert barrier film.]
[35. The method of claim 28 wherein said castable liquid detergent composition comprises:
[36. The method of claim 28 wherein said castable liquid detergent composition further comprises a sodium silicate.]
Dependencies are inferred from the claim text.