Claims
- 1. A spray-dried granular detergent composition comprising:
- (a) from about 5% to about 50% of a nonsoap anionic surfactant or mixtures thereof;
- (b) from about 20% to about 60% of an alkali metal tripolyphosphate builder or mixtures thereof;
- (c) from about 1% to about 10% of a mixture of polyethylene glycol and a polyacrylate,
- said mixture having a polyethylene glycol to polyacrylate weight ratio of from about 1:3 to about 3:1, said polyethylene glycol having a weight average molecular weight of from about 1,000 to about 50,000, and said polyacrylate having a weight average molecular weight of from about 1,000 to about 20,000.
- 2. The composition of claim 1 wherein the mixture of polyethylene glycol and polyacrylate comprises from about 1% to about 3% of the composition.
- 3. The composition of claim 2 wherein the polyacrylate has a weight average molecular weight of from about 2,000 to about 10,000.
- 4. The composition of claim 3 wherein the polyethylene glycol has a weight average of from about 4,000 to about 20,000, and the polyacrylate has a weight average molecular weight of from about 3,000 to about 8,000.
- 5. The composition of claim 4 wherein the polyacrylate is sodium polyacrylate.
- 6. The composition of claim 1 wherein the mixture of polyethylene glycol and polyacrylate are present in a weight ratio of from about 1:3 to about 3:1.
- 7. The composition of claim 1 wherein the polyacrylate has a weight average molecular weight of from about 3,000 to about 8,000, and the polyethylene glycol has a weight average molecular weight of from about 4,000 to about 20,000.
- 8. The composition of claim 1 wherein the polyacrylate is sodium polyacrylate.
- 9. The composition of claim 1 wherein the alkali metal tripolyphosphate builder is sodium tripolyphosphate.
- 10. The composition of claim 9 wherein the nonsoap anionic surfactant comprises a surfactant selected from the group consisting of alkali metal salts of C.sub.11-13 alkylbenzene sulfonates, C.sub.14-18 alkyl sulfates, C.sub.14-18 alkyl polyethoxy sulfates containing from about 1 to about 4 moles of ethylene oxide and mixtures thereof.
- 11. The composition of claim 10 comprising from about 10% to about 30% of the nonsoap anionic surfactant.
- 12. The composition of claim 9 additionally comprising from about 1% to about 8% by weight of an alkali metal silicate having a molar ratio of from about 1.6 to about 2.4.
- 13. The composition of claim 12 comprising from about 1% to about 3% of a mixture of a polyethylene glycol and sodium polyacrylate, said mixture having a polyethylene glycol to sodium polyacrylate weight ratio of from about 1:3 to about 3:1, said polyethylene glycol having a weight average molecular weight of from about 4,000 to about 20,000 and said sodium polyacrylate having a weight average molecular weight of from about 3,000 to about 8,000.
- 14. A process for spray drying a granular detergent composition comprising:
- (a) from about 5% to about 50% of a nonsoap anionic surfactant or mixtures thereof;
- (b) from about 20% to about 60% of an alkali metal tripolyphosphate builder or mixtures thereof;
- (c) from about 1% to about 10% of a mixture of polyethylene glycol and a polyacrylate wherein the polyethylene glycol and polyacrylate are present in a weight ratio of from about 1:3 to about 3:1 and,
- wherein the components are mixed in the crutcher along with enough additional water so that the water content of the crutcher paste is from about 25% to about 50% and then spray dried with an inlet air temperature of from about 400.degree. F. (204.degree. C.) to about 800.degree. F. (427.degree. C.).
- 15. The process of claim 14 wherein the water content of the crutcher paste is from about 28% to about 40% and the inlet air temperature in the spray tower is from about 500.degree. F. (260.degree. C.) to about 700.degree. F. (371.degree. C.).
- 16. A granular composition prepared by the process of claim 14.
Parent Case Info
This is a continuation of Ser. No. 664,905, filed on Oct. 26, 1984, now abandoned.
US Referenced Citations (28)
Foreign Referenced Citations (4)
Number |
Date |
Country |
1333915 |
Oct 1973 |
GBX |
1380402 |
Jan 1975 |
GBX |
1460893 |
Jan 1977 |
GBX |
2048841 |
Dec 1980 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
664905 |
Oct 1984 |
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