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US 12,049,608 B2Granted
Leuco colorants as bluing agents in laundry care compositions
AssigneeThe Procter & Gamble Company
InventorsGregory Scot Miracle, Daniel Dale Ditullio, Dominick Joseph Valenti, Sanjeev Kumar Dey, Haihu Qin
Life of this patent
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Abstract
A laundry care composition including: (a) at least one laundry care ingredient and (b) a leuco composition. The laundry care composition has a ΔHA of at least 10. Methods of treating textiles with such laundry care compositions.
Claims7
A laundry care composition comprising:
- (a) at least one laundry care ingredient and (b) a leuco composition, wherein the laundry care composition has a ΔHA of at least 10, wherein the leuco composition is a compound according to formula (I)
- wherein the ratio of Formula I to its oxidized form is at least 1:3;
- wherein all of the Ro and Rm groups on all three rings A, B or C are hydrogen and all three Rp are —NR1R2;
- wherein G is hydrogen;
- wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, substituted aryl, alkaryl, substituted alkaryl, and R4;
- R4 is a organic group composed of one or more organic monomers with said monomer molecular weights ranging from 28 to 500;
- wherein any charge present in any of the compounds is balanced with a suitable independently selected internal or external counterion, wherein at least one of R1 and R2 is an R4 that comprises at least two monomers, wherein the leuco composition is uncolored and undergoes color change only when contacted with a triggering agent, wherein the laundry care composition comprises an antioxidant.
4 more elements
Dependencies are inferred from the claim text.