Leuco polymers as bluing agents in laundry care compositions
AssigneeMilliken & Company
InventorsHaihu Qin, Sanjeev K. Dey, Gregory S. Miracle
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Abstract
A leuco polymer includes a leuco monomer and an alkene. The leuco polymer has a molecular weight of at least 500 and is obtainable by polymerization of the leuco monomer and one or more alkene co-monomers. The leuco monomer consists of an alkene covalently bound to a leuco moiety and the leuco monomer has a molar extinction coefficient at a wavelength in the range 400 to 750nm of less than 1000 M−1cm−1. The alkene monomer(s) have a molar extinction coefficient at a wavelength in the range 400 to 750nm that is less than 100 M−1cm−1. Methods of making the leuco polymer, laundry care compositions comprising the leuco polymer and methods of treating textiles with such laundry care compositions.
Claims25
A leuco polymer comprising a leuco monomer and an alkene, wherein the leuco polymer has a molecular weight of at least 500 and is obtainable by polymerization of the leuco monomer and one or more alkene co-monomers, wherein the leuco monomer consists of an alkene covalently bound to a leuco moiety and the leuco monomer has a maximum molar extinction coefficient at a wavelength in the range 400 to 750 nm of less than 1000 M−1cm−1, wherein the alkene co-monomer(s) have a maximum molar extinction coefficient at a wavelength in the range 400 to 750 nm that is less than 100 M−1cm−1.
Dependencies are inferred from the claim text.