Use of surfactant blend to control rheology of unit dose or liquid laundry detergent

1. A unit dose detergent pack comprising:

a pouch made of a water-soluble film; and

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

A. a surfactant component present in an amount of about 55 to about 85 weight percent actives based on a total weight of said detergent composition and consisting of;

(1) 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;

(2) at least one non-ionic surfactant comprising an alkoxylated alcohol; and

(3) at least one anionic surfactant comprising a linear alkylbenzene sulfonate;

B. water present in a total amount of from about 5 to about 15 weight percent based on a total weight of said detergent composition; and

C. a rheology control agent present in an amount of from about 5 to about 7.5 weight percent actives based on a total weight of said detergent composition and chosen from butyl cellosolve, butyl carbitol, and combinations thereof,

wherein said detergent composition has a viscosity of less than about 7,500 cps at 75° F. when diluted with additional water at about a 1:1 weight ratio of detergent composition:water; and

wherein said (1) alcohol ethoxy sulfate is sodium laureth sulfate ethoxylated with about 2 to about 4 moles of ethylene oxide, said (2) alkoxylated alcohol is a C12-C15 alcohol ethoxylate; and said (3) linear alkyl benzenesulfonate is 2-dodecylbenzene sulfonate;

wherein:

the weight ratio of actives of (1), (2), and (3) falls within a four-sided region (A) of a ternary plot, wherein the four-sided region (A) is defined by four points of the ratio of (1):(2):(3) as follows:

(i) (0):(0.9):(0.1);

(ii) (0.2):(0.8):(0);

(iii) (0.2):(0.15):(0.65); and

(iv) (0):(0.25):(0.75);

or

the weight ratio of actives of (1), (2), and (3) falls within a four-sided region (B) of a ternary plot, wherein the four-sided region (B) is defined by four points of the ratio of (1):(2):(3) as follows:

(v) (0.2):(0.65):(0.15);

(vi) (0.5):(0.4):(0.1);

(vii) (0.5):(0.05):(0.45); and

(viii) (0.2):(0.15):(0.65).

2. The unit dose detergent pack of claim 1 wherein the weight ratio of actives of (1), (2), and (3) are: (0.05):(0.76):(0.19).

3. The unit dose detergent pack of claim 1 wherein the weight ratio of actives of (1), (2), and (3) are: (0.07):(0.59):(0.33).

4. The unit dose detergent pack of claim 1 wherein the weight ratio of actives of (1), (2), and (3) are: (0.11):(0.43):(0.46).

5. The unit dose detergent pack of claim 1 wherein the weight ratio of actives of (1), (2), and (3) are: (0.06):(0.35):(0.59).

6. The unit dose detergent pack of claim 1 wherein the weight ratio of actives of (1), (2), and (3) are: (0.28):(0.40):(0.32).

7. The unit dose detergent pack of claim 1 wherein the weight ratio of actives of (1), (2), and (3) are: (0.28):(0.23):(0.49).

8. The unit dose detergent pack of claim 1 wherein the weight ratio of actives of (1), (2), and (3) are: (0.45):(0.21):(0.34).

9. The unit dose detergent pack of claim 1 further comprising a polyethylene glycol having a weight average molecular weight of from about 190 to about 850 g/mol.

10. A detergent composition consisting of:

A. a surfactant component present in an amount of about 55 to about 85 weight percent actives based on a total weight of said detergent composition and consisting of:

(1) 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;

(2) at least one non-ionic surfactant comprising an alkoxylated alcohol; and

(3) at least one anionic surfactant comprising a linear alkylbenzene sulfonate;

B. water present in a total amount of from about 5 to about 15 weight percent based on a total weight of said detergent composition; and

C. a rheology control agent present in an amount of from about 5 to about 7.5 weight percent actives based on a total weight of said detergent composition and chosen from butyl cellosolve, butyl carbitol, and combinations thereof,

wherein said detergent composition has a viscosity of less than about 7,500 cps at 75° F. when diluted with additional water at about a 1:1 weight ratio of detergent composition:water; and

wherein said (1) alcohol ethoxy sulfate is sodium laureth sulfate ethoxylated with about 2 to about 4 moles of ethylene oxide, said (2) alkoxylated alcohol is a C12-C15 alcohol ethoxylate; and said (3) linear alkyl benzenesulfonate is 2-dodecylbenzene sulfonate;

wherein:

the weight ratio of actives of (1), (2), and (3) falls within a four-sided region (A) of a ternary plot, wherein the four-sided region (A) is defined by four points of the ratio of (1):(2):(3) as follows:

(i) (0):(0.9):(0.1);

(ii) (0.2):(0.8):(0);

(iii) (0.2):(0.15):(0.65); and

(iv) (0):(0.25):(0.75);

or

the weight ratio of actives of (1), (2), and (3) falls within a four-sided region (B) of a ternary plot, wherein the four-sided region (B) is defined by four points of the ratio of (1):(2):(3) as follows:

(v) (0.2):(0.65):(0.15);

(vi) (0.5):(0.4):(0.1);

(vii) (0.5):(0.05):(0.45); and

(viii) (0.2):(0.15):(0.65).

11. The unit dose detergent pack of claim 1 wherein the detergent composition consists essentially of (A), (B), and (C).

12. The unit dose detergent pack of claim 1 wherein the detergent composition consists of (A), (B), and (C).