Leuco polymers as bluing agents in laundry care compositions
AssigneeMilliken & Company
InventorsSanjeev K. Dey, Haihu Qin, Gregory S. Miracle
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Abstract
A method of obtaining a leuco polymer, the method comprising the step of reacting a reactive leuco compound with a polymer to form the leuco polymer. The reactive leuco compound comprises at least one leuco moiety and at least one nucleophilic group. The polymer comprises at least one group capable of reacting with said nucleophilic group. The said leuco moiety has a maximum molar extinction coefficient at a wavelength in the range 400 to 750 nm of less than 1000 M−1 cm−1. Laundry care compositions comprising the leuco polymer and methods of treating textiles with such laundry care compositions.
Claims20
A method of obtaining a leuco polymer, the method comprising the step of reacting a compound with a polymer to form the leuco polymer, wherein the compound comprises at least one leuco moiety and at least one nucleophilic group, wherein the polymer comprises at least one group capable of reacting with said nucleophilic group, wherein said leuco moiety has a maximum molar extinction coefficient at a wavelength in the range 400 to 750 nm of less than 1000 M−1 cm−1, and wherein the leuco polymer contains 0.1 to 30 mol. % leuco moieties.
Dependencies are inferred from the claim text.