Multiuse, enzymatic detergent and methods of stabilizing a use solution

Patent metadata

Field	Value
Publication number	US-10179892-B2
Application number	US-201414536818-A
Country	US
Kind code	B2
Filing date	Nov 10, 2014
Priority date	Nov 11, 2013
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

Stabilized use solutions of low phosphorus, alkali metal carbonate detergents employing enzymes for cleaning compositions are disclosed. In particular, the present invention is a composition for, and method of, removing soils, preventing redeposition of protein soils and reducing foam, using stabilized enzyme cleaning compositions, namely use solutions of the same.

First claim

What is claimed is:

1. A solid multi-use detergent composition comprising:
an alkali metal carbonate alkalinity source;
a protease enzyme;
a soluble starch or polysaccharide stabilizing agent;
a surfactant; and
water;
wherein said detergent composition has between about 60 wt-% and about 90 wt-% alkali metal carbonate alkalinity source;
wherein said solid detergent composition is provided in one or more block forms
wherein the surfactant is a nonionic defoaming or wetting agent;
wherein the said detergent composition is free of anionic surfactant; and
wherein a use solution of the composition has an alkaline pH of at least about 9 and the use solution retains at least 40% of its enzymatic activity at temperatures of at least about 65° C. for at least about 20 minutes, the stabilizing agent is formulated into the solid detergent composition together with the alkali metal carbonate alkalinity source and protease enzyme, and the use solution maintains at least substantially similar detergency for at least about 20 minutes or greater.

2. The composition of claim 1 , wherein said stabilizing agent is at least one amylose, amylopectin, pectin, inulin, potato starch, corn starch, wheat starch, rice starch, cellulose, dextrin, dextran, maltodextrin, cyclodextrin, glycogen, and oligiofructose.

3. The composition of claim 1 , wherein said stabilizing agent is an amylose, amylopectin-containing starch, or mixture thereof.

4. The composition of claim 1 , wherein said detergent composition has between about 60 wt-% and about 85 wt-% of the alkali metal carbonate, between about 0.1 wt-% and about 5 wt-% of the protease enzyme, and between about 0.1 wt-% and about 10 wt-% of the stabilizing agent.

5. The composition of claim 1 , further comprising a chelating agent and an additional enzyme stabilizer.

6. The composition of claim 1 , wherein said detergent composition is phosphorus-free, nitrilotriacetic acid-free, or both.

7. A stabilized multi-use detergent use solution composition produced by the process comprising:
providing a solid detergent composition comprising an alkali metal carbonate alkalinity source; a protease enzyme; a polysaccharide or soluble starch stabilizing agent; surfactant; and water, wherein the surfactant is a nonionic defoaming or wetting agent wherein the said solid detergent composition is free of anionic surfactant; and wherein said solid detergent composition is provided in one or more block forms; and
contacting the detergent composition with water to generate an aqueous use solution;
wherein the solid detergent composition has between about 60 wt-% and about 90 wt-% of the alkali metal carbonate alkalinity source;
wherein said use solution has an alkaline pH of at least about 9; and
wherein said use solution retains at least about 40% of its enzymatic activity for at least 20 minutes at temperatures between about 65-80° C., and the use solution maintains at least substantially similar detergency for at least about 20 minutes or greater.

8. The composition of claim 7 , wherein said use solution retains at least about 60% of its enzymatic activity for at least 20 minutes.

9. The composition of claim 7 , wherein said stabilizing agent is an amylose, amylopectin-containing starch, or mixture thereof.

10. The composition of claim 7 , wherein said solid detergent composition has between about 60 wt-% and about 85 wt-% of the alkali metal carbonate alkalinity source, between about 0.1 wt-% and about 5 wt-% of the protease enzyme, and between about 0.1 wt-% and about 10 wt-% of the stabilizing agent.

11. The composition of claim 7 , wherein said use solution retains at least about 60% of its enzymatic activity for at least 20 minutes, and wherein said use solution has between about 10 ppm to 2000 ppm of the stabilizing agent and between about 0.1 ppm to 100 ppm of the protease enzyme.

12. The composition of claim 7 , wherein said solid detergent composition further comprising at least one additional functional ingredient of anti-redeposition agent, bleaching agent, solubility modifier, dispersant, rinse aid, metal protecting agent, corrosion inhibitor, sequestrant, chelating agent, fragrance, dye, rheology modifier, thickener, hydrotrope, and coupler.

13. A method of cleaning using a stabilized multi-use detergent composition comprising:
generating a use solution with a detergent composition comprising an alkali metal carbonate alkalinity source, a protease enzyme, a soluble starch or polysaccharide stabilizing agent, surfactant, and water; wherein the surfactant is a defoaming or wetting agent, and said detergent composition is free of anionic surfactant; wherein said detergent composition is provided in one or more block forms; and wherein the detergent composition has between about 60 wt-% and about 90 wt-% of the alkali metal carbonate alkalinity source;
contacting a surface with said use solution; and cleaning said surface with said use solution, wherein said use solution has an alkaline pH of at least about 9, and wherein said use solution retains at least about 40% of its enzymatic activity for at least 20 minutes at temperatures between about 65-80° C., the use solution maintains at least substantially similar detergency for at least about 20 minutes or greater.

14. The method of claim 13 , wherein said use solution retains at least about 60% of its enzymatic activity for at least 20 minutes.

15. The method of claim 13 , wherein said use solution retains at least about 50% of its enzymatic activity for at least about 60 minutes at the pH of at least about 9 and temperatures between about 65-80° C.

16. The method of claim 13 , wherein said enzyme is present in the use solution between about 0.1 ppm and about 100 ppm and wherein said stabilizing agent is present in the use solution between about 0.1 ppm and about 10,000 ppm.

17. The method of claim 13 , wherein said surface is a surface of a ware.

18. The method of claim 13 , wherein said detergent composition is a multi-use solid detergent composition.

19. The method of claim 13 , wherein said use solution is introduced to a washing step of a wash cycle.

Assignees

• Ecolab Usa Inc

Inventors

• Chan Wendy
• Stokes Jennifer
• Jensen Lyndal
• Silvernail Carter M
• Everson Terrence P
• Legatt Graig
• Ortmann Nathan Richard
• Hammel Devon Beau

Classifications

• C11D3/10 Primary

  Carbonates {; Bicarbonates} · CPC title

• C11D3/3719

  Polyamides or polyimides · CPC title

• C11D3/32

  Amides; Substituted amides · CPC title

• C11D3/384

  Animal products · CPC title

• C11D3/30

  Amines; Substituted amines {; Quaternized amines} · CPC title