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AssigneeKoninklijke Philips N.V.
InventorsAntonius Wilhelmus Maria De Laat, James Donald Gwyer, Martin John Edwards, Zeynep Sabah
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A varnish composition is provided comprising a hydrophilic oral care agent, such as a peroxide material, dispersed in a solution of a film-forming hydrophobic polymer in a non-polar solvent. The solvent is selected so as to be a good solvent for the polymer and to be susceptible to evaporation. The composition can be applied as a single layer varnish, preferably a whitening varnish. E.g., the dispersed hydrophilic peroxide material is an aqueous peroxide solution, such as a hydrogen peroxide solution, whereby the dispersion is an emulsion.
An oral care varnish composition comprising a dispersion of a hydrophilic oral care agent in a solution of a film-forming hydrophobic polymer in a non-polar solvent, wherein the polymer is selected from the group consisting of hydrogenated polyisobutene, Ethylene/Propylene/Styrene Copolymer, Butylene/Ethylene/Styrene Copolymer, alkylated polyvinylpyrrolidone, poly alpha olefins, Hydrogenated Polycyclopentadiene, Polyvinylstearylether, or polystyrene/rubber block-copolymers, and wherein the solvent is selected from the group consisting of pentane, isopentane, heptane, isooctane, isodecane, cyclomethicone (D4), cyclomethicone (D5), C7-9 isoparaffin, C8-9 isoparaffin, and mixtures of these solvents.
An oral care varnish composition comprising a dispersion of a hydrophilic oral care agent in a solution of a film-forming hydrophobic polymer in a non-polar solvent, said solvent being volatile and being characterized as a better than theta θ solvent for the polymer, wherein the polymer is a linear triblock copolymer based on styrene and ethylene/butylene, and (SEBS), optionally grafted with maleic anhydride.
Dependencies are inferred from the claim text.