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US 10,206,864 B2Granted
Oral care compositions having improved stability
AssigneeThe Procter & Gamble Company
InventorsYujun Li, Ross Strand, Xin Sun, Haiqiu Tang
Life of this patent
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Abstract
Oral care compositions comprising have improved stability due to the removal of stannous ions and the inclusion of low molecular weight polyethylene glycols (PEGs). Compositions containing a source of zinc ions and PEG having a weight average molecular weight of 300 Da to 8000 Da and used for treating the oral cavity comprising administering to the oral cavity an oral care composition according to the present invention.
Claims14
An oral care composition comprising:
- a) from about 0.025% to about 9%, by weight of the composition, a surfactant;
- b) from 0.01% to 5%, by weight of the composition a flavor oil;
- c) from 0.1% to 3%, by weight of the composition, a first humectant comprising polyethylene glycols (PEGs) having a weight average molecular weight range of from 300 Da to 8,000 Da;
- and
- d) from 0.01% to 5%, by weight of the composition, a thickener system selected from the group consisting of carboxymethyl cellulose (CMC), hydroxyethyl cellulose (HEC), carrageenan, and combinations thereof;
- wherein the oral care composition is an oil-in-water emulsion having a dispersed phase comprising flavor oil droplets having an average mean particle size of less than 10 nm after 14 days at 40° C.;
- wherein the flavor oil has a Dielectric Constant (DEC) from 1 to 15;
- wherein the flavor oil has a Water Number (WN) from 1 to 50;
- wherein the flavor oil has a ClogP of less than 2.77;
- wherein the oral care composition is substantially free of stannous ions.
7 more elements
Dependencies are inferred from the claim text.