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US 10,870,819 B2Granted
Leuco colorants as bluing agents in laundry care compositions
AssigneeThe Procter & Gamble Company
InventorsGregory Scot Miracle, Brian Joseph Loughnane, Samantha Jo Cost, Wesley A. Freund, Haihu Qin, Sanjeev Kumar Dey
Life of this patent
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Abstract
A laundry care composition including at least one laundry care ingredient, a leuco composition, from 0.05 wt % to 15 wt % of a primary amine compound and from 0.005 wt % to 5 wt % of an antioxidant.
Claims16
A laundry care composition comprising:
- (a) at least one laundry care ingredient, (b) a leuco composition;
- (c) from 0.05 wt % to 15 wt % of a primary amine compound and (d) from 0.005 wt % to 5 wt % of an antioxidant, wherein the leuco composition is uncolored and undergoes color change only when contacted with a triggering agent, wherein the leuco composition comprises at least one unsubstituted phenyl ring.
Dependencies are inferred from the claim text.