Process for preparing a detergent slurry and particulate detergent composition

• US 5,118,439 A
• Filed: 10/12/1990
• Issued: 06/02/1992
• Est. Priority Date: 10/21/1988
• Status: Expired due to Term

• Current Assignee: Cognis International GmbH (BASF SE)
• Original Assignee: Henkel Corporation (Henkel AG & Co KGaA)
• Inventors: Urfer, Allen D., Howell, Gail M.
• Primary Examiner(s): Clingman, A. Lionel
• Assistant Examiner(s): PARKS, WILLIAM
• Application Number:
  US07/597,296
• Time in Patent Office: 599 Days
• Field of Search: 252/174.18, 252/353, 252/174.17
• US Class Current: 510/418
• CPC Class Codes: C11D 1/662 Carbohydrates or derivatives
• CPC Class Codes: C11D 11/02 Preparation in the form of powder by spray drying
• CPC Class Codes: C11D 3/221 Mono, di- or trisaccharides or derivatives thereof
• CPC Class Codes: Y10S 516/03 Organic sulfoxy compound containing

Abstract

The invention is a process for preparing a carbonate containing detergent slurry with reduced viscosity by incorporating in the detergent slurry from 0.5 to 10% of an alkylpolyglycoside and 0.5 to 10% of an alkali metal chloride, the percentage being by weight of the non-aqueous portion of the slurry.

Claims

1. A process for preparing a particulate detergent composition which comprises:

A. forming an aqueous slurry comprising, per 100 parts per total slurry weight;

1. from about 15 to about 50 parts by weight of water; and

2. from about 50 to about 85 parts by weight of nonaqueous ingredients, the non-aqueous ingredients comprising;

a. from about 3 to 50% by weight of an anionic surfactant, nonionic surfactant or mixture thereof;

b. from about 10 to about 70% by weight of an alkali metal carbonate builder;

c. from about 0 to 50% by weight of at least one supplemental builder;

d. from about 0 to about 60% by weight of at least one filler;

e. from about 0 to about 15% by weight of at least one additive; and

f. at least a viscosity reducing amount of an alkyl polyglycoside and an alkali metal chloride;

B. drying the slurry to form the particulate detergent composition.

2. A process of claim 1 wherein the viscosity reducing amount of an alkyl polyglycoside and an alkali metal chloride comprises from about 0.5 to about 10% by weight of at least one alkali metal chloride selected from a group consisting of sodium chloride and potassium chloride.

3. A composition of claim 1 wherein the non-aqueous ingredients comprise about 8 to about 25 percent by weight of at least one surfactant selected from the group consisting of anionic surfactants and nonionic surfactants;

from about 25 to about 60% by weight of sodium carbonate, from about 10 to about 40 percent by weight of at least one additional builder, from about 15-35% by weight of sodium sulfate;

from about 0.5 to about 5% of additives;

from 0.5 to about 10% by weight of an alkyl polyglucoside and from about 0.5 to about 10 percent by weight of at least one alkali metal chloride selected from the group consisting of sodium chloride and potassium chloride.

4. A process of claim 1 wherein the alkyl polyglycoside is a composition of the formula

5. A process of claim 4 wherein the alkyl polyglycoside is an alkyl polyglucoside.

6. A process of claim 2 wherein the alkyl polyglycoside is an alkyl polyglucoside.

7. The process of claim 1 wherein the slurry is spray dried.

12. A method of claim 1 wherein the supplemental builder comprises a zeolite.

13. A method of claim 1 wherein the supplemental builder comprises not more than about 20% by weight of a phosphate builder.

17. A method of claim 1 wherein the aqueous slurry comprises from about 15% to about 60% by weight of the non-aqueous portion of the slurry of sodium sulfate.

18. A method of claim 17 containing from 15% to 35% by weight of the non-aqueous portion of the slurry of sodium sulfate.

8. A particulate detergent composition which non-aqueous ingredients comprises:

a. from about 3 to about 50% by weight of an anionic surfactant, nonionic surfactant and mixtures thereof;

b. from about 10 to about 70% by weight of an alkali metal carbonate builder;

c. from about 0 to 60% by weight of at least one supplemental builder;

d. from about 0 to about 60% by weight of at least one filler;

e. from about 0 to about 15% by weight of at least one additive; and

f. from about 0.5 to about 25% by weight of an alkyl polyglycoside and from about 0.5 to about 35% by weight of at least one alkali metal chloride.

9. A composition of claim 8 wherein the composition contains from about 0.5 to about 10% by weight of an alkyl polyglycoside and from about 0.5 to about 10% by weight of at least one alkali metal chloride.

10. A process of claim 8 wherein the alkyl polyglycoside is a composition of the formula

11. A detergent composition of claim 9 wherein the alkyl polyglycoside is an alkyl polyglucoside.

14. A composition of claim 8 containing a zeolite as a supplemental builder.

15. A composition of claim 8 containing not more than about 20% by weight of a phosphate builder as a supplemental builder.

16. An aqueous slurry comprising from about 15 to about 50 parts by weight of water and from about 50 to about 85 parts by weight of the detergent composition of claim 8.

19. A composition of claim 8 comprising from about 15% to 60% by weight of sodium sulfate.

20. A composition of claim 19 containing from 15% to about 35% by weight of sodium sulfate.