Cast detergent-containing article and method of using
First Claim
1. A detergent-containing article of commerce comprising:
- (a) a three-dimensional, solid.Iadd., .Iaddend.cast, hydrated, substantially uniform alkaline detergent .Iadd.for ware and hard surface washing .Iaddend.comprising;
(1) at least .Iadd.about .Iaddend.30% by weight of an alkaline hydratable chemical consisting essentially of alkali metal hydroxide;
(2) .Iadd.an effective amount of .Iaddend.a hardness-sequestering agent;
(3) .[.more than 15 parts by weight, per 100 parts by weight of said alkaline hydratable chemical, of.]. water of hydration, at least a portion of said water of hydration being associated with said alkali metal hydroxide.Iadd., wherein the alkali metal hydroxide and the hardness sequestering agent are present in an amount sufficient to render the cast detergent a solid at room temperature by virtue of the water of hydration.Iaddend.; and
(b) a receptacle-shaped disposble container surrounding and in contact with said solid, cast, hydrated alkaline detergent composition on all but one surface thereof.
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Accused Products
Abstract
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.
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Citations
17 Claims
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1. A detergent-containing article of commerce comprising:
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(a) a three-dimensional, solid.Iadd., .Iaddend.cast, hydrated, substantially uniform alkaline detergent .Iadd.for ware and hard surface washing .Iaddend.comprising; (1) at least .Iadd.about .Iaddend.30% by weight of an alkaline hydratable chemical consisting essentially of alkali metal hydroxide; (2) .Iadd.an effective amount of .Iaddend.a hardness-sequestering agent; (3) .[.more than 15 parts by weight, per 100 parts by weight of said alkaline hydratable chemical, of.]. water of hydration, at least a portion of said water of hydration being associated with said alkali metal hydroxide.Iadd., wherein the alkali metal hydroxide and the hardness sequestering agent are present in an amount sufficient to render the cast detergent a solid at room temperature by virtue of the water of hydration.Iaddend.; and (b) a receptacle-shaped disposble container surrounding and in contact with said solid, cast, hydrated alkaline detergent composition on all but one surface thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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- 11. composition in said warewashing zone. 12. A method according to claim 11 wherein said unsurrounded, exposed, drainable surface generally faces
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12. toward said spray means. 13. A method according to claim 12 wherein said cast, hydrated alkaline detergent composition is placed in accordance with said step (a) in an inverted position above said spray means, such that said unsurrounded, exposed, drainable surface faces downwardly toward said
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15. receptacle-shaped container mold. .Iaddend. .Iadd.18. The article of claim 15 wherein the weight of the alkali detergent is at least 6 lbs. .Iaddend. .Iadd.19. The article of claim 15 wherein the hardness sequestering agent is a sodium tripolyphosphate compound. .Iaddend. .Iadd.20. An article according to claim 15 wherein said solid, cast, hydrated, alkaline detergent composition comprises:
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(a) at least about 30% by weight of the alkaline hydratable chemical consisting essentially of sodium hydroxide; (b) an effective hardness-sequestering amount of a sodium tripolyphosphate compound; (c) an effective hardness sequestering amount of a polyelectrolyte; and (d) up to 5% by weight of an additive selected from the group consisting of a defoamer and a solid, available chlorine-containing component;
wherein the alkaline detergent is cast within the disposable container. .Iaddend. - View Dependent Claims (14)
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16. Iadd.21. The article of claim 20 wherein the polyelectrolyte is an organic polyelectrolyte composition. .Iaddend. .Iadd.22. A detergent-containing article of comprising a three-dimensional, uniform, solid cast, hydrated alkaline warewashing detergent comprising:
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(a) at least about 30% by weight of sodium hydroxide; (b) a second alkaline hydratable chemical comprising an effective hardness-sequestering amount of sodium tripolyphosphate; (c) water of hydration in both discrete and continuous states of hydration; (d) an effective hardness sequestering amount of a polyacrylate; and (e) up to 5% by weight of an additive selected from the group consisting of a defoamer and a solid, available chlorine-containing component; wherein the alkali metal hydroxide and the hardness sequestering agent are present in amounts sufficient to render the cast detergent a solid at room temperature by virtue of the water of hydration and the alkaline warewashing detergent is surrounded by and held in contact with a receptacle-shaped disposable thermoplastic container, on all but one
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17. surface thereof. .Iaddend. .Iadd.23. An article according to claim 22 wherein said article further comprises a cover attached to said receptacle-shaped container. .Iaddend.
Specification