Multiuse, enzymatic detergent and methods of stabilizing a use solution

Patent metadata

Field	Value
Publication number	US-10011808-B2
Application number	US-201414536804-A
Country	US
Kind code	B2
Filing date	Nov 10, 2014
Priority date	Nov 11, 2013
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

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 multi-use solid block detergent composition comprising: from about 30% wt-% to about 90 wt-% of an alkali metal carbonate alkalinity source; from about 0.01 wt-% to about 10 wt-% of a protease enzyme; from about 0.01 wt-% to about 30 wt-% of a protein-based stabilizing agent selected from casein, gelatin or a combination of casein and gelatin; and water, wherein said solid block detergent composition is phosphorus-free, nitrilotriacetic acid-free, or both; wherein a use solution of the composition has a pH of at least about 9, the protease enzyme in the use solution retains at least about 40% of its enzymatic activity at temperatures of at least about 65° C. for at least about 20 minutes; wherein the stabilizing agent is formulated into the solid block detergent composition together with the alkali metal carbonate alkalinity source and the protease enzyme, and the use solution maintains at least substantially similar detergency for at least about 20 minutes to about 2 hours.

2. The composition of claim 1 , wherein said detergent composition has between about 50 wt-% and about 85 wt-% of an alkali metal carbonate, between about 5 wt-% and about 30 wt-% of water, and between about 0.01 wt-% and about 5 wt-% of the protease enzyme.

3. The composition of claim 1 , further comprising one other component, the other component comprises a surfactant or surfactant system, a chelating agent, an additional enzyme stabilizer, or combinations thereof.

4. A stabilized multi-use detergent use solution composition, wherein said use composition is produced by the process comprising:
providing a solid block detergent composition comprising from about 30% wt-% to about 90 wt-% of an alkali metal carbonate alkalinity source; from about 0.01 wt-% to about 10 wt-% of a protease enzyme; from about 0.01 wt-% to about 30 wt-% of a protein-based stabilizing agent selected from casein, gelatin or a combination of casein and gelatin; and water, wherein said solid block detergent composition is phosphorus-free, nitrilotriacetic acid-free, or both; and contacting the solid block detergent composition with water to generate an aqueous use solution; wherein said use solution has an alkaline pH of at least about 9; wherein said protease enzyme retains at least about 40% of its enzymatic activity in said use solution for at least 20 minutes at temperatures between about 65-80° C., and wherein the stabilizing agent is formulated into the solid block detergent composition together with the alkali metal carbonate alkalinity source and protease enzyme, and said use solution maintains at least substantially similar detergency for at least about 20 minutes to 2 hours.

5. The composition of claim 4 , wherein the protease enzyme retains at least about 30% of its enzymatic activity for at least 60 minutes.

6. The composition of claim 4 , wherein said detergent composition comprises between about 50 wt-% and about 85 wt-% of an alkali metal carbonate, between about 5 wt-% and about 30 wt-% of water, and between about 0.01 wt-% and about 5 wt-% of the protease enzyme.

7. The composition of claim 4 , wherein the protease enzyme in said use solution retains at least about 60% of its enzymatic activity for at least 20 minutes, and wherein said use solution comprises between about 10 ppm and 2000 ppm stabilizing agent and between about 0.1 ppm to 100 ppm protease enzyme.

8. The composition of claim 4 , wherein said detergent composition further comprises one additional functional ingredient comprising a defoaming agent, anti-redeposition agent, bleaching agent, surfactants, solubility modifier, dispersant, rinse aid, metal protecting agent, additional stabilizing agent, corrosion inhibitor, sequestrant, chelating agent, fragrance, dye, rheology modifier, thickener, hydrotrope, coupler, or combinations thereof.

9. A method of cleaning using a stabilized multi-use detergent composition comprising:
generating a use solution of a solid block detergent composition comprising from about 30% wt-% to about 90 wt-% of an alkali metal carbonate alkalinity source, from about 0.01 wt-% to about 10 wt-% of a protease enzyme, from about 0.01 wt-% to about 30 wt-% of a protein-based stabilizing agent selected from casein, gelatin or a combination of casein and gelatin, and water, wherein said solid block detergent composition is phosphorus-free, nitrilotriacetic acid-free, or both; 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, wherein said protease retains at least 40% of its enzymatic activity in said use solution for at least 20 minutes at temperatures between about 65-80° C., and wherein the stabilizing agent is formulated into the solid block detergent composition together with the alkali metal carbonate alkalinity source and protease enzyme, and said use solution maintains at least substantially similar detergency for at least about 20 minutes to 2 hours.

10. The method of claim 9 , wherein said enzyme retains at least about 60% enzymatic activity in said use solution for at least 20 minutes.

11. The method of claim 9 , wherein said enzyme retains at least about 30% of its enzymatic activity in said use solution for at least about 60 minutes at the pH of at least about 9 and temperatures between about 65-80° C.

12. The method of claim 9 , 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.

13. The method of claim 9 , 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 10 ppm and about 1,000 ppm.

14. The method of claim 9 , wherein said surface is a surface of a ware.

15. The method of claim 9 , wherein said detergent composition is a multi-use solid detergent composition.

16. The method of claim 9 , 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

• C11D3/222

  Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin · CPC title

• C11D3/10 Primary

  Carbonates {; Bicarbonates} · CPC title

• C11D3/38609 Primary

  Protease or amylase in solid compositions only · CPC title

• C11D3/30

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

• C11D3/3719

  Polyamides or polyimides · CPC title