Unit dose detergent compositions and methods of production and use thereof
View Patent ↗The present invention provides unit dose detergent products, such as those in the form of compositions comprising: a water-soluble single-chamber container, such as a pouch; and a cleaning system comprising at least one detersive surfactant, and optionally one or more additional components. The invention also provides methods of production of such compositions, and methods use of such compositions in processes for cleaning dishware and/or fabrics, including garments, by introducing one or more of the unit dose products of the invention into an automatic washing machine suitable for washing dishware or laundry, whereby the cleaning system is released such that it comes into contact with a soiled article (e.g., dishware or fabrics) under conditions favoring the removal of one or more soils from the article.
1. A multi-phase unit dose detergent composition, comprising:
a water-soluble single-chamber container defining a single compartment; and
a cleaning system comprising at least two different phases selected from the group consisting of a solid powder phase, a solid gel phase, and a liquid phase, wherein
said cleaning system comprises at least one detersive surfactant,
said cleaning system is contained in said compartment defined by said container, and
said at least two different phases each form different layers that are in direct contact with each other and demonstrate little or no visible intermixing at the interphase between said phases.
2. The composition of claim 1 , wherein said single-chamber container is a formed, sealed pouch produced from a water-soluble polymer or film.
3. The composition of claim 2 , wherein said single-chamber pouch is produced from a polyvinylalcohol (PVOH) film.
4. The composition of claim 1 , wherein said cleaning system comprises at least one powder phase composition and at least one gel phase composition.
5. The composition of claim 4 , wherein said composition comprises a powder/gel ratio selected from the group consisting of about 90% powder to about 10% gel, about 89% powder to about 11% gel, about 88% powder to about 12% gel, about 87% powder to about 13% gel, about 86% powder to about 14% gel, and about 82% powder to about 18% gel.
6. The composition of claim 4 , wherein said multi-phase unit dose detergent composition comprises a powder/gel ratio of about 86% powder to about 14% gel.
7. The composition of claim 4 , wherein said multi-phase unit dose detergent composition comprises a powder/gel ratio of about 87% powder to about 13% gel.
8. The composition of claim 4 , wherein said multi-phase unit dose detergent composition comprises a powder/gel ratio of about 88% powder to about 12% gel.
9. The composition of claim 4 , wherein said multi-phase unit dose detergent composition comprises a powder/gel ratio of 89% powder to about 11% gel.
10. The composition of claim 4 , wherein said multi-phase unit dose detergent composition comprises a powder/gel ratio of about 88.89% powder to about 11.11% gel.
11. The composition of claim 4 , wherein said gel phase composition comprises from about 70% to about 80% dipropylene glycol, from about 10% to about 20% water, and from about 1% to about 10% sodium stearate.
12. The composition of claim 4 , wherein said gel phase comprises about 76% dipropylene glycol, about 18% water, and about 5% sodium stearate.
13. The composition of claim 4 , wherein said cleaning system further comprises at least one liquid composition.
14. The composition of claim 4 , wherein said powder phase composition comprises said at least one detersive surfactant and said gel phase composition comprises at least one rinse aid polymer.
15. The composition of claim 4 , wherein said powder phase composition comprises said at least one detersive surfactant and said gel phase composition comprises at least one enzyme.
16. The composition of claim 4 , wherein said powder phase composition comprises said at least one detersive surfactant and said gel phase composition comprises at least one catalyst compound suitable for activating a bleaching system or composition.
17. The composition of claim 4 , wherein said powder phase composition comprises at least one detersive surfactant and said gel phase composition comprises at least one fabric conditioning compound or composition.
18. The composition of claim 1 , wherein said at least one detersive surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, zwitterionic surfactants, ampholytic surfactants and cationic surfactants.
19. The composition of claim 18 , wherein said at least one detersive surfactant is an alkylene sulfofatty acid salt.
20. The composition of claim 19 , wherein said alkylene sulfofatty acid salt is a methylester sulfonate of a fatty acid.
21. The composition of claim 1 , wherein said composition is formulated so as to be suitable for use in an automatic dishwashing method for removing soils from dishware.
22. The composition of claim 1 , wherein said composition is formulated so as to be suitable for use in an automatic laundering method for removing soils from fabrics.
23. The composition of claim 22 , wherein said automatic laundering method is performed using a washing machine, a tergetometer or an equivalent device.
24. The composition of claim 21 , wherein said soils are selected from the group consisting of oil-containing soils, carbohydrate-containing soils, protein-containing soils, tannin-containing soils and particulate soils.
25. A method of removing soils from soiled dishware, comprising:
placing said soiled dishware into the chamber of an automatic dishwashing machine that comprises at least one dosing compartment;
placing at least one of the single-compartment unit dose compositions of claim 1 into said dosing compartment; and
introducing water into the chamber of said machine and washing said dishware in an aqueous environment in said machine under conditions favoring the release of the cleaning system into the chamber of said machine such that the components of said cleaning system contact said dishware and remove said soils from said dishware.
26. The method of claim 25 , wherein said soils are selected from the group consisting of oil-containing soils, carbohydrate-containing soils, protein-containing soils, tannin-containing soils and particulate soils.
27. A method of removing soils from soiled fabrics, comprising:
placing said soiled fabrics into the chamber of an automatic fabric-laundering machine;
placing at least one of the single-compartment unit dose compositions of claim 1 into said fabric-washing machine; and
introducing water into the chamber of said machine and washing said fabrics in an aqueous environment in said machine under conditions favoring the release of the cleaning system into the chamber of said machine such that the components of said cleaning system contact said fabrics and remove said soils from said fabrics.
28. The method of claim 27 , wherein said single-compartment unit dose composition is placed into the chamber of said fabric-washing machine prior to introducing water into the chamber of said machine.
29. The method of claim 27 , wherein said single-compartment unit dose composition is placed into the chamber of said fabric-washing machine after introducing water into the chamber of said machine.
30. The method of claim 27 , wherein said soils are selected from the group consisting of oil-containing soils, carbohydrate-containing soils, protein-containing soils, tannin-containing soils and particulate soils.
31. The method of claim 27 , wherein said automatic fabric-laundering machine is a washing machine, a tergetometer or an equivalent device.
32. A method for producing a multi-phase unit dose detergent composition, comprising:
producing at least two different phase form compositions selected from the group consisting of a solid powder phase, a solid gel phase, and a liquid phase, wherein at least one of said at least two different phase form compositions comprises at least one detersive surfactant;
providing a single-chamber water-soluble container defining a single compartment;
sequentially layering said at least two different phase form compositions into said single compartment of said container such that said at least two different phases each form different layers that are in direct contact with each other, and demonstrate little or no visible intermixing at the interphase between said phases; and
sealing said container.
33. A multi-phase unit dose detergent composition produced according to the method of claim 32 .
34. The composition of claim 22 , wherein said soils are selected from the group consisting of oil-containing soils, carbohydrate-containing soils, protein-containing soils, tannin-containing soils and particulate soils.