Abrasive tooth whitening dentifrice of improved stability
AssigneeColgate-Palmolive Company
InventorsMichael Prencipe, Vincent Drago
Life of this patent
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Abstract
Abrasive dentifrice compositions containing an oxygen liberating whitening compound which is stable with respect to oxygen level and exhibits heightened and rapid whitening of teeth and stain removal which comprises a combination of a dicalcium phosphate compound and a metal ion free peroxide compound.
Claims12
An aqueous abrasive toothpaste composition containing a peroxide compound which is stable with respect to active oxygen level and exhibits heightened and rapid whitening of teeth and stain removal which aqueous composition consists essentially of a mixture, stable and storable without a peroxide stabilizer, when filled into a closed container of at least 7% by weight water, and a combination of about 20 to about 60% by weight calcium pyrophosphate, at least about 1 to about 20% by weight of urea peroxide and about 0.5 to about 8.0% by weight of an alkali pyrophosphate salt, which combination is stable and effective to remove stain and whiten teeth in the oral cavity.
Dependencies are inferred from the claim text.