Cast detergent-containing article and method of making and using
First Claim
1. A process for forming a three-dimensional, uniform solidi , casti, detergent .Iadd.for ware and hard surface washing .Iaddend.within a receptacle-shaped mold which comprises:
- (a) heating .[.about 20-75 parts by weight of a 40-75 weight percent.]. .Iadd.an .Iaddend.aqueous solution of an alkali metal hydroxide .[.to about 55°
to 95°
C..].;
(b) distributing an effective amount of a hardness sequestering agent and .[.about 15-40 parts by weight of an.]. .Iadd.additional solid .Iaddend.alkaline hydratable chemical in said aqueous solution;
(c) thickening said solution, and mixing said solution during said thickening to form a castable uniform dispersion;
(d) pouring said uniform dispersion into said receptacle-shaped mold and at least partly filling said mold; and
(e) allowing said thickened dispersion to solidify in said mold to a uniform, solid cast detergent wherein at least one surface of the cast detergent is exposed by the receptacle-shaped mold .Iadd.and wherein the alkali metal hydroxide and the hardness sequestering agent are present in amounts sufficient to render the cast detergent solid at room temperature by virtue of water of hydration. .Iaddend.
2 Assignments
0 Petitions
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.
-
Citations
27 Claims
-
1. A process for forming a three-dimensional, uniform solidi , casti, detergent .Iadd.for ware and hard surface washing .Iaddend.within a receptacle-shaped mold which comprises:
-
(a) heating .[.about 20-75 parts by weight of a 40-75 weight percent.]. .Iadd.an .Iaddend.aqueous solution of an alkali metal hydroxide .[.to about 55°
to 95°
C..].;(b) distributing an effective amount of a hardness sequestering agent and .[.about 15-40 parts by weight of an.]. .Iadd.additional solid .Iaddend.alkaline hydratable chemical in said aqueous solution; (c) thickening said solution, and mixing said solution during said thickening to form a castable uniform dispersion; (d) pouring said uniform dispersion into said receptacle-shaped mold and at least partly filling said mold; and (e) allowing said thickened dispersion to solidify in said mold to a uniform, solid cast detergent wherein at least one surface of the cast detergent is exposed by the receptacle-shaped mold .Iadd.and wherein the alkali metal hydroxide and the hardness sequestering agent are present in amounts sufficient to render the cast detergent solid at room temperature by virtue of water of hydration. .Iaddend. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A process for forming a three-dimensional, uniform.Iadd., .Iaddend.solid.Iadd., .Iaddend.cast detergent .Iadd.for ware and other hard surface washing .Iaddend.within a receptacle-shaped mold which comprises:
-
(a) heating .[.about 20-75 parts by weight of a 40-75 weight percent.]. .Iadd.an .Iaddend.aqueous solution of an alkali metal hydroxide to about 55°
C. to .Badd..[.95.]..Baddend. .Iadd.85.Iaddend.°
C.;(b) distributing an effective amount of a hardness sequestering agent and .[.about 15 to 40 parts by weight of an.]. .Iadd.additional solid .Iaddend.alkaline hydratable chemical in said aqueous solution; (c) thickening said solution with a polyelectrolyte polymer, to form a castable uniform dispersion; (d) pouring said uniform dispersion into said receptacle-shaped mold and at least partly filling said mold; and (e) allowing the castable thickened dispersion to solidify in said mold to a uniform cast detergent, wherein at least one surface of the cast detergent is exposed by said mold .Iadd.wherein the alkali metal hydroxide and the hardness sequestering agent are present in amounts sufficient to render the cast detergent solid at room temperature by virtue of water of hydration.Iaddend.. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 26, 27)
-
-
19. A method of making an article of commerce incorporating a .Iadd.warewashing .Iaddend.detergent composition which comprises:
-
(a) forming a castable liquid detergent composition at a temperature of up to .Badd..[.95.]..Baddend. .Iadd.85.Iaddend.°
C. which comprises;(1) at least 30% by weight of an alkaline hydratable chemical consisting essentially of alkali metal hydroxide; (2) an effective amount of a hardness sequestering agent; and (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 water of hydration.Iaddend.; (b) cooling and agitating the liquid composition at a rate such that the liquid composition thickens without segregation of components forming a thickened liquid dispersion; (c) pouring the thickened liquid dispersion into a receptacle-shaped mold; and (d) solidifying said liquid dispersion to form a uniform solid .Iadd.warewashing .Iaddend.detergent composition. - View Dependent Claims (20, 21, 22, 23, 24, 25)
-
Specification