Fast dissolving solid detergent

• US 8,093,200 B2
• Filed: 02/15/2007
• Issued: 01/10/2012
• Est. Priority Date: 02/15/2007
• Status: Active Grant

• Current Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Original Assignee: Ecolab USA Incorporated (Ecolab, Inc.)
• Inventors: Bartelme, Michael, Marquardt, Julie, Lentsch, Steve E., Man, Victor F., Leafblad, Brian Robert
• Primary Examiner(s): Douyon, Lorna M
• Application Number:
  US11/675,415
• Publication Number:
  US 20080280806A1
• Time in Patent Office: 1,790 Days
• Field of Search: 510/445, 510/224, 510/108, 510/521, 510/294, 510/298, 510/446, 510/451, 510/509, 510/514
• US Class Current: 510/445
• CPC Class Codes: C11D 1/04 Carboxylic acids or salts thereof soap C11D9/00
• CPC Class Codes: C11D 10/04 based on mixtures of surface-active non-soap compounds and soap
• CPC Class Codes: C11D 17/0047 Detergents in the form of bars or tablets
• CPC Class Codes: C11D 17/06 Powder; Flakes; Free-flowing mixtures; Sheets
• CPC Class Codes: C11D 3/044 Hydroxides or bases
• CPC Class Codes: C11D 3/08 Silicates
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/2075 Carboxylic acids-salts thereof
• CPC Class Codes: C11D 3/2079 Monocarboxylic acids-salts thereof

Abstract

A solid block or unit dosed detergent composition as described which can be utilized in a variety of applications for cleaning surfaces and objects, removing suspending soils, and rinsing easily. The detergent composition, when exposed to an aqueous solution such as water, dissolves quickly and completely to create the use solution.

Claims

1. A solid detergent composition comprising:

an alkali metal carbonate in an amount effective to provide a use solution having a pH of at least about 8;

a cleaning agent including 1 to 20 wt. % of a surfactant or surfactant system;

a solidification agent in an amount to form a solid block or tablet; and

at least 0.2 wt. % of branched fatty acid disintegrator selected from the group consisting of isopentanoic acid, neopentanoic acid, isohexanoic acid, neohexanoic acid, isoheptanoic acid, neoheptanoic acid, isooctanoic acid, neooctanoic acid, isononanoic acid, neononanoic acid, isodecanoic acid, neodecanoic acid, and salts and mixtures thereof;

the solid detergent composition has a dissolution rate when exposed to 4000 mL of aqueous solution at 155°

F. of at least 30 g/minute; and

wherein the composition is free of bleaching agents.

2. The solid detergent composition of claim 1, wherein the branched fatty acid disintegrator is selected from the group consisting of isononanoic acid, isooctanoic acid, neodecanoic acid, neopentanoic acid, and salts and mixtures thereof.

3. The solid detergent composition of claim 1, wherein the branched fatty acid disintegrator is sodium isononanoate.

4. The solid detergent composition of claim 1 comprising between 0.5 wt. % to 5 wt. % of branched fatty acid disintegrator.

5. The solid detergent composition of claim 1 comprising between 5 wt. % to 20 wt. % of branched fatty acid disintegrator.

6. The solid detergent composition of claim 1, wherein the solidification agent comprises between 10 to 80 wt. % of sodium carbonate, sodium hydroxide or sodium metasilicate, or combinations thereof.

7. The solid detergent composition of claim 1, wherein the total composition has between 20 wt. % to 40 wt. % sodium carbonate.

8. The solid detergent composition of claim 1, wherein the total composition has between 20 to 40 wt % sodium carbonate and 15 to 40 wt % sodium hydroxide.

9. The solid detergent composition of claim 1, wherein the solid detergent composition is in the form of a block having a size of at least about 5 kilograms.

12. A method for manufacturing a fast-dissolving solid detergent composition according to claim 1 comprising

blending the alkaline source in an amount effective to provide a use solution having a pH of at least about 8, a cleaning agent including 1 to 20 wt. % of a surfactant or surfactant system, a solidification agent;

and at least 0.2 wt. % of the branched fatty acid disintegrator with sufficient water to form a slurry; and

forming the slurry into a solid detergent composition;

wherein the solid detergent composition has a greater dissolution rate when exposed to an aqueous solution compared to a similar solid composition lacking the branched fatty acid disintegrator.

13. The method of claim 12, wherein forming the slurry into a solid detergent composition is by an extrusion process.

14. The method of claim 12, wherein forming the slurry into a solid detergent composition is by a casting process.

15. The method of claim 12, wherein forming the slurry into a solid detergent composition is by a tabletting process.

10. A solid detergent composition which dissolves in an aqueous solution to form a use solution, the solid detergent comprising

an alkali metal carbonate in an amount effective to provide a use solution having a pH of at least about 8;

a cleaning agent including 1 to 20 wt. % of a surfactant or surfactant system;

a solidification agent; and

at least 0.2 wt. % of branched fatty acid disintegrator selected from the group consisting of isopentanoic acid, neopentanoic acid, isohexanoic acid, neohexanoic acid, isoheptanoic acid, neoheptanoic acid, isooctanoic acid, neooctanoic acid, isononanoic acid, neononanoic acid, isodecanoic acid, neodecanoic acid, and salts and mixtures thereof;

wherein the solid detergent composition has a faster dissolution rate when exposed to 4000 mL of water at 155°

F. compared to a similar solid composition containing the corresponding straight-chained fatty acid and wherein the composition is free of bleaching agents.

11. The solid detergent composition of claim 10, wherein the dissolution rate of the solid composition comprising at least 0.5 wt. % of a branched fatty acid disintegrator is about two times faster than the similar solid composition containing the corresponding straight-chained fatty acid.