Unit dose detergent pack including a liquid detergent composition with improved color stability
US11535819B2 · kind B2 · utility
0Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2020 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Apr 1, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3773
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A unit dose detergent pack is disclosed. The unit dose detergent pack includes a pouch formed from a water-soluble film and a liquid detergent composition releasably disposed within the pouch. The liquid detergent composition includes an alkanolamine, an acid, a copolymer formed from first and second monomers with the first monomer being diallyldimethylammonium chloride (DADMAC), and an alkali metal sulfite or bisulfite. The copolymer and the alkali metal sulfite or bisulfite interact with at least one of the alkanolamine and the acid to reduce discoloration of the liquid detergent composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.