Sulfated alkyl ethoxylate-containing detergent composition

• US 3,915,903 A
• Filed: 06/11/1973
• Issued: 10/28/1975
• Est. Priority Date: 07/03/1972
• Status: Expired due to Term

• Current Assignee: Rodney M. Wise
• Original Assignee: Rodney M. Wise
• Inventors: Wise, Rodney M.
• Primary Examiner(s): Padgett, Benjamin R.
• Assistant Examiner(s): Parr, E. Suzanne
• Application Number:
  US05/368,565
• Time in Patent Office: 869 Days
• Field of Search: 252/533,539,540,551,532,557,558
• US Class Current: 510/357
• CPC Class Codes: C11D 1/29 Sulfates of polyoxyalkylene ethers
• CPC Class Codes: C11D 11/02 Preparation in the form of powder by spray drying
• CPC Class Codes: C11D 3/3472 additionally containing -COOH groups or derivatives thereof

Abstract

Process for producing a spray-dried sulfated alkyl ethoxylatecontaining detergent composition. A water-soluble salt of an organic compound having from 1 to 6 carbon atoms substituted with a sulfate or sulfonate group and at least one carboxyl group is added to an aqueous slurry containing the detergent and an alkaline detergency builder to lower the viscosity, making it easier to spray-dry.

Claims

1. A PROCESS FOR EFFICIENTLY PRODUCING A CRISP, FREE-FLOWING BUILT DETERGENT COMPOSITION BY SPRAY DRYING AN AQUEOUS SLURRY HAVING THEREIN INCLUDED A MINOR AMOUNT OF A PROCESSING AIDTO REDUCE THE VISCOSITY OF THE SLURRY COMPRISING:

A. FORMING AN AQUEOUS SLURRY CONSISTING ESSENTIALLY OF (1) FROM 7% TO 55% OF AN ALKALINE DETERGENCY BUILDER (2) FROM 4% TO 35% OF A WATER-SOLUBLE SALT OF A SULFATED PRIMARY ALKYL ETHOXYLATE HAVING FROM 10 TO 22 CARBON ATOMS IN THE ALKYL CHAIN AND FROM 1 TO 20 ETHYLENE OXIDE GROUPS, (3) SAID MINOR AMOUNT OF THE PROCESSING AID CHARACTERIZED IN ACTING AS A HYDROTROPE IN REDUCING THE VISCOSITY OF THE SLURRY, SAID PROCESSING SAID BEING AWATERSOLUBLE SALT OF AN ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULFOSUCCINIC ACID, SULFOACETIC ACID SULFOPHTALIC ACID, AND M-SULFOBENZOIC ACID WHEREIN THE PROCESSING AID IS PRESENT IN A WEIGHT RATIO OF PROCESSING SAID TO SULFATED ALKYL ETOXYLATE OF FROM 1;

40 TO 1;

2, AND (4) THE BALANCE WATER, AND B.SPRAY-DRYING THE SLURRY TO FORM CRISP, FREE-FLOWING GRANULES.

2. The process of claim 1 wherein the sulfated alkyl ethoxylate has from 12 to 18 carbon atoms in the alkyl chain and from 1 to 9 ethylene oxide groups.

3. The process of claim 2 wherein the aqueous slurry contains the processing aid in an amount of processing aid to sulfated alkyl ethoxylate of from 1:

20 to 1;

4.

4. The process of claim 3 wherein the alkaline detergency builder is sodium carbonate.

5. The process of claim 4 wherein the processing aid is the trisodium salt of sulfosuccinic acid.

6. The process of claim 4 wherein the processing aid is the disodium salt of m-sulfobenzoic acid.

7. A spray-dried built detergent composition comprised of granules which are crisp and free-flowing and possess excellent storage stability, containing a minor amount of a processing aid consisting essentially of:

a. from 5% to 50% of a water-soluble salt of a sulfated primary alkyl ethoxylate having from 10 to 22 carbon atoms in the alkyl chain and from 1 to 20 ethylene groups;

b. from 10% to 80% on an alkaline detergency builder; and

c. as said processing aid a water-soluble salt of an organic compound selected from the group consisting of the water-soluble salts of sulfosuccinic acid, sulfoacetic acid, sulfophthalic acid, and m-sulfobenzoic acid in a weight ratio of processing aid to sulfated alkyl ethoxylate of from 1;

20 to 1;

4, wherein the granules are obtained by spray-drying an aqueous slurry of the components.

8. The detergent composition of claim 7 wherein the processing aid is a water-soluble salt of sulfosuccinic acid.

9. The detergent composition of claim 7 wherein the processing aid is a water-soluble salt of m-sulfobenzoic acid.

10. The detergent composition of claim 7 wherein the processing aid is selected from the group consisting of the trisodium salt of sulfosuccinic acid and the disodium salt of sulfobenzoic acid, and is present in a ratio of processing aid to sulfated primary alkyl ethoxylate of from 1:

20 to 1;

4, and wherein the detergency builder is an inorganic compound.

11. The detergent composition of claim 10 wherein the detergency builder is sodium carbonate.