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US 11,628,128 B2Granted
Oral care composition
AssigneeColgate-Palmolive Company
InventorsMichael Prencipe, Andre Morgan, Venda Porter-Maloney
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Abstract
Disclosed are oral care compositions, for example dentifrice compositions, comprising an oral care composition comprising an orally acceptable vehicle, metal oxide particles having an average particle size of no greater than a dentin tubule and at least one amino acid capable of chelating the metal oxide. The composition may comprise a polymeric adherent material for adhering the metal oxide particles in the dentin tubule. The metal oxide particles have a median particle size of 5 microns or less, and may comprise zinc oxide.
Claims18
An oral care composition comprising:
- an orally acceptable vehicle;
- a source of metal oxide particles, wherein said metal oxide particles have a median particle size of from 1 to 7 microns;
- one or more amino acids capable of chelating said metal oxide particles selected from arginine, L-arginine, cysteine, leucine, isoleucine, lysine, L-lysine and serine;
- an abrasive particulate selected from calcium phosphate, calcium sulphate, precipitated calcium carbonate, silica, calcium pyrophosphate, and combinations thereof;
- wherein the metal oxide comprises zinc oxide, wherein the metal oxide is encapsulated in a polymeric adherent material, and wherein the polymeric adherent material comprises a hydroxylalkyl cellulose polymer;
- and
- wherein the hydroxyalkyl cellulose polymer is selected from hydroxypropylmethyl cellulose (HPMC), hydroxyethylpropyl cellulose (HEPC), hydroxybutylmethyl cellulose (HBMC), and carboxymethyl cellulose (CMC);
- and
- wherein the oral care composition is in the form of a toothpaste.
6 more elements
Dependencies are inferred from the claim text.