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US 12,005,076 B2Granted
Zinc phosphate complex
AssigneeColgate-Palmolive Company
InventorsBaohua Qiao, Long Pan, Gregory Szewczyk, Ravi Subramanyam
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Abstract
A soluble zinc polyphosphate complex made by combining ingredients which include an inorganic zinc salt and a plurality of long chain polyphosphates having 6 or more phosphate polymer units, the relative amount of inorganic zinc salt and long chain polyphosphates providing a phosphorus to zinc mole ratio of at least 6:1. Further provided is a method of making this soluble zinc polyphosphate.
Claims4
A soluble zinc polyphosphate complex in solution, wherein the complex is obtainable by combining ingredients consisting of zinc chloride and sodium hexametaphosphate in an aqueous solvent;
- wherein the zinc polyphosphate complex in solution consists of zinc and a polyphosphate chain, wherein the phosphorus to zinc mole ratio of the zinc polyphosphate complex is 20:1;
- and
- wherein upon contact with proteins in saliva in an oral cavity, the soluble zinc polyphosphate complex forms a precipitate which occludes dentinal tubules.
Dependencies are inferred from the claim text.