Water-soluble package with multiple distinctly colored layers of liquid laundry detergent
US6521581B1 · kind B1 · utility
29Cited by
25References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2001 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Dec 14, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0017
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention includes a layered liquid detergent composition in a water-soluble single use package, the composition comprising at least two layers, the at least two layers comprising a surfactant, a colored inorganic electrolyte, and water. In the inventive compositions at least one of the layers (the electrolyte layer) is colored. Preferred compositions include a dye in the surfactant layer, so that the compositions contain at least two layers, with two distinct colors. Preferred compositions are transparent and are enclosed within a transparent body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.