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US 9,901,521 B2Granted
Whitening oral care compositions
AssigneeColgate-Palmolive Company
InventorsVenda Porter-Maloney, Suman K. Chopra, Dennis Ontumi
Life of this patent
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Abstract
Described herein are oral care compositions comprising a crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, together with a blue to violet-blue pigment; including some embodiments which further comprise an ethylene oxide, propylene oxide block co-polymer.
Claims15
A dentifrice composition comprising (i) a whitening complex comprising crosslinked polyvinylpyrrolidone complexed with hydrogen peroxide, and (ii) a pigment having a blue to blue-violet color with a hue angle in the CIELAB system ranging from 200 to 320 degrees.
Dependencies are inferred from the claim text.