Unit dose detergent pack including a liquid detergent composition with improved color stability
AssigneeHenkel AG & Co. KGaA
InventorsAndrew Neal Bernard, Wei Sun, Casey Elphege Camire, Daniel Thomas Piorkowski
Life of this patent
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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.
Claims17
A unit dose detergent pack comprising:
- a pouch formed from a water-soluble film;
- and
- a liquid detergent composition releasably disposed within said pouch and comprising:
- an alkanolamine;
- an acid selected from the group consisting of coconut fatty acid, carboxylic acid, lauric acid, myristic acid, palmitic acid, stearic acid, topped palm kernel fatty acid, alkyl benzene sulfonic acid, and combinations thereof;
- from 0.1 to about 5% by weight of a copolymer formed from first and second monomers with said first monomer being diallyldimethylammonium chloride (DADMAC), the % by weight being based on a total weight of said liquid detergent composition;
- and
- an alkali metal sulfite or bi sulfite,
- wherein said copolymer and said alkali metal sulfite or bisulfite interact with at least one of said alkanolamine and said acid to reduce discoloration of said liquid detergent composition, and
- wherein said liquid detergent composition exhibits at least 40 units of brightness at a wavelength of about 457 nm after aging for about two weeks at about 45° C. measured using a visible-range color measurement spectrophotometer.
A liquid detergent composition comprising:
- an alkanolamine;
- an acid selected from the group consisting of coconut fatty acid, carboxylic acid, lauric acid, myristic acid, palmitic acid, stearic acid, topped palm kernel fatty acid, alkyl benzene sulfonic acid, and combinations thereof;
- about 0.1 to about 5% by weight of a copolymer formed from first and second monomers with said first monomer being diallyldimethylammonium chloride (DADMAC), the % by weight being based on a total weight of the liquid detergent composition;
- and
- an alkali metal sulfite or bi sulfite,
- wherein said copolymer and said alkali metal sulfite or bisulfite interact with at least one of said alkanolamine and said acid to reduce discoloration of said liquid detergent composition, and
- wherein said liquid detergent composition exhibits at least 40 units of brightness at a wavelength of about 457 nm after aging for about two weeks at about 45° C. measured using a visible-range color measurement spectrophotometer.
Dependencies are inferred from the claim text.