Salt-free structured unit dose systems

1. A unit dose detergent pack comprising:

a pouch made of a water-soluble film; and

a structured detergent composition encapsulated within said pouch, wherein said structured detergent composition comprises:

A. a surfactant component comprising,

(i) an alcohol ethoxy sulfate having a C 8 -C 20 backbone that is ethoxylated with from about 1 to about 10 moles of ethylene oxide and is present in an amount of from about 5 to about 20 weight percent actives based on a total weight of said structured detergent composition,

(ii) a linear alkyl benzene sulfonate present in an amount of from about 1 to about 10 weight percent actives based on a total weight of said structured detergent composition, and

(iii) a C 8 -C 20 alcohol alkoxylated with about 2 to about 12 moles of an alkylene oxide and present in an amount of from about 7 to about 30 weight percent actives based on a total weight of said structured detergent composition,

B. water,and

C. a non-aqueous solvent component,

wherein said structured detergent composition is free of an added rheology modifier; and

wherein a combination of said surfactant component and said non-aqueous solvent component is present in a weight ratio of actives with a total amount of water of from about 1:0.4 to about 1:0.75 such that said structured detergent composition has a viscosity of at least about 100 Pa.s;

wherein said water is present in an amount of from about 48 to about 50 weight percent based on a total weight of said structured detergent composition.

2. The unit dose detergent pack of claim 1 wherein said added rheology modifier is chosen from salts, alkoxylated polyethyleneimines, polyethylene glycol, ionic liquids, and combinations thereof.

3. The unit dose detergent pack of claim 1 wherein said added rheology modifier is a salt.

4. The unit dose detergent pack of claim 3 wherein said salt is sodium chloride and/or sodium citrate.

5. The unit dose detergent pack of claim 1 wherein said added rheology modifier is chosen from alkoxylated polyethyleneimines, polyethylene glycol, ionic liquids, and combinations thereof.

6. The unit dose detergent pack of claim 1 wherein said combination of said surfactant component and said non-aqueous solvent component is present in a weight ratio of actives with said water of about 1:0.4.

7. The unit dose detergent pack of claim 6 wherein said surfactant component is present in an amount of about 30 to about 32 weight percent actives based on a total weight of said structured detergent composition.

8. The unit dose detergent pack of claim 1 wherein the non-aqueous solvent component is not alkoxylated polyethyleneimines, polyethylene glycol, ionic liquids, or combinations thereof.

9. The unit dose detergent pack of claim 1 wherein said combination of said surfactant component and said non-aqueous solvent component is present in a weight ratio of actives with said water of about 1:0.5.

10. The unit dose detergent pack of claim 9 wherein said surfactant component is present in an amount of about 28 to about 30 weight percent actives based on a total weight of said structured detergent composition.

11. The unit dose detergent pack of claim 1 wherein said combination of said surfactant component and said non-aqueous solvent component is present in a weight ratio of actives with said water of about 1:0.75.

12. The unit dose detergent pack of claim 1 wherein said surfactant component is present in an amount of about 24 to about 26 weight percent actives based on a total weight of said structured detergent composition.

13. The unit dose detergent pack of claim 1 wherein said structured detergent composition has a viscosity of at least about 200 Pa.s.

14. The unit dose detergent pack of claim 1 that has a pack height that is at least about 77% of the height of a pack.

15. The unit dose detergent pack of claim 1 wherein:

A. (i) said alcohol ethoxy sulfate is sodium laureth sulfate ethoxylated with about 2 to about 4 moles of ethylene oxide and is present in an amount of from about 14 to about 16 weight percent actives based on a total weight of said structured detergent composition,

(ii) said linear alkyl benzene sulfonate is present in an amount of from about 4 to about 6 weight percent actives based on a total weight of said structured detergent composition, and

(iii) said alcohol is a C 12 -C 15 alcohol ethoxylated with about 6 to about 8 moles of ethylene oxide and is present in an amount of from about 20 to about 25 weight percent actives based on a total weight of said structured detergent composition,

B. water; and

C. said non-aqueous solvent component comprises glycerine present in an amount of from about 15 to about 20 weight percent based on a total weight of said structured detergent composition, propylene glycol present in an amount of from about 7 to about 10 weight percent based on a total weight of said structured detergent composition, and monoethanolamine present in an amount of from about 2 to about 4 weight percent based on a total weight of said structured detergent composition,

wherein said structured detergent composition further comprises coconut oil fatty acid present in an amount of about 9 to about 11 weight percent based on a total weight of said structured detergent composition, and

wherein said combination of said surfactant component and said non-aqueous solvent component is present in a weight ratio of actives with a total amount of water of about 1:0.5 such that said structured detergent composition has a viscosity of at least about 200 Pa.s.

16. A structured detergent composition comprising:

A. a surfactant component comprising,

(i) an alcohol ethoxy sulfate having a C 8 -C 20 backbone that is ethoxylated with from about 1 to about 10 moles of ethylene oxide and is present in an amount of from about 5 to about 20 weight percent actives based on a total weight of said structured detergent composition,

(ii) a linear alkyl benzene sulfonate present in an amount of from about 1 to about 10 weight percent actives based on a total weight of said structured detergent composition, and

(iii) a C 8 -C 20 alcohol alkoxylated with about 2 to about 12 moles of an alkylene oxide and present in an amount of from about 7 to about 30 weight percent actives based on a total weight of said structured detergent composition;

B. water present in an amount of from about 48 to about 50 weight percent based on a total weight of said structured detergent composition; and

C. a non-aqueous solvent component,

wherein said structured detergent composition is free of an added rheology modifier; and

wherein said combination of said surfactant component and said non-aqueous solvent component is present in a weight ratio of actives with a total amount of water of from about 1:0.4 to about 1:0.75 such that said structured detergent composition has a viscosity of at least about 100 Pa.s.

17. A method for modifying rheology of a detergent composition, said method comprising the steps of:

providing a detergent composition comprising;

A. a surfactant component comprising,

(i) an alcohol ethoxy sulfate having a C 8 -C 20 backbone that is ethoxylated with from about 1 to about 10 moles of ethylene oxide and is present in an amount of from about 5 to about 20 weight percent actives based on a total weight of the detergent composition,

(ii) a linear alkyl benzene sulfonate present in an amount of from about 1 to about 10 weight percent actives based on a total weight of the detergent composition, and

(iii) a C 8 -C 20 alcohol alkoxylated with about 2 to about 12 moles of an alkylene oxide and present in an amount of from about 7 to about 30 weight percent actives based on a total weight of the detergent composition;

B. water present in an amount of from about 48 to about 50 weight percent based on a total weight of said detergent composition; and

C. a non-aqueous solvent component,

wherein the detergent composition is free of an added rheology modifier; and

diluting the detergent composition with additional water such that a combination of the surfactant component and the non-aqueous solvent component is present in a weight ratio of actives with a total amount of water of from about 1:0.4 to about 1:0.75 such that the detergent composition is structured and has a viscosity of at least about 100 Pa.s.

18. The method of claim 1 wherein the detergent composition is encapsulated in a pouch made of a water-soluble film.