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US 11,690,791 B2Granted
Zinc phosphate complex
AssigneeColgate-Palmolive Company
InventorsShiri Nawrocki, Viktor Dubovoy, Long Pan, Baohua Qiao, Gregory Szewczyk, Ravi Subramanyam
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Abstract
An oral care composition having a soluble zinc polyphosphate complex made by combining ingredients including a zinc salt, a plurality of long chain polyphosphates having 6 or more phosphate polymer units, and a solvent, the relative amount of organic zinc salt and long chain polyphosphates provides a phosphorus to zinc mole ratio of at least 6:1. Further provided is a method of treating a subject suffering from dentinal sensitivity applying the oral care composition to the teeth and gums of the subject.
Claims4
An oral care composition, comprising:
- a soluble zinc polyphosphate complex, made by combining zinc citrate and sodium hexametaphosphate, and water;
- wherein the relative amounts of zinc citrate and sodium hexametaphosphate to provide the soluble zinc polyphosphate complex with a phosphorus to zinc mole ratio of 20:1.
Dependencies are inferred from the claim text.