Oral care composition with crosslinked polymer peroxide US Patent 9,517,194 Application No 14/723,139 Granted 13 December 2016 Assignee Colgate-Palmolive Co The patent describes a tooth whitening system comprising a peroxide complexed with crosslinked polyvinylpyrrolidone (PVP) in polyethylene glycol, preferably PEG-600. The preferred peroxide is hydrogen peroxide and by complexing with PVP the chemical and physical characteristics provide controlled release of the peroxide.
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