Liquid mouthwash containing a particulate bicarbonate suspension
AssigneeChurch & Dwight Co., Inc.
InventorsKenneth J. Giacin, Amy L. Joseph
Life of this patent
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Abstract
This invention provides a mouthwash composition which is in the form of a concentrated aqueous ethanolic formulation of ingredients. An essential aspect of an invention mouthwash is an alkali metal bicarbonate ingredient which is present as a suspension phase of ultrafine particles. The suspension phase also can have a content of colloidal zinc oxide. Oral hygiene is practiced by diluting an invention mouthwash concentrate with water, and rinsing the oral cavity with the diluted liquid medium.
Claims9
A mouthwash composition which is a liquid concentrate consisting essentially of (1) about 5-50 weight percent of ethanol;
- (2) about 5-35 weight percent of water;
- (3) about 0.5-30 weight percent of a humectant ingredient;
- (4) about 2-30 weight percent of a suspension of particulate alkali metal bicarbonate ingredient, having an average particle size of about 0.6-5 microns;
- (5) about 0-3 weight percent of a hydrophilic polymer ingredient;
- and (6) about 0-5 weight percent of a surfactant ingredient;
- wherein said particulate bicarbonate suspension provides a higher content and more stability than bicarbonate dissolved in the liquid medium;
- and said hydrophilic polymer thickness the mouthwash liquid concentrate medium, stabilize the particulate bicarbonate suspension phase, enhances mouthfeel, and increases residual mouthwash adherence to oral cavity surfaces;
- and said liquid mouthwash concentrate has a viscosity varying between slightly viscous and soft gel consistency, and at high viscosity exhibits thixotropic properties;
- and said liquid mouthwash concentrate has a transparent or translucent optical clarity.
A process for preparing a mouthwash product which consists essentially of (1) forming a liquid medium of consituents comprising (a) about 5-50 parts by weight of ethanol, (b) about 0.5-30 parts by weight of a humectant ingredient, (c) about 0-5 parts by weight of a hydrophilic polymer ingredient, and (d) about 0-5 parts by weight of a surfactant ingredient;
- and (2) diluting the liquid medium with about 10-35 parts by weight of a 10-30 weight percent aqueous solution of alkali metal bicarbonate;
- wherein the diluted liquid medium contains a suspension of particulate alkali metal bicarbonate ingredient having an average particle size of about 0.5-5 microns;
- and wherein said particulate bicarbonate suspension provides a higher content and more stability than bicarbonate dissolved in the liquid medium;
- and said hydrophilic polymer thickens the mouthwash liquid concentrate medium, a stabilizes the particulate bicarbonate suspension phase, enhances, mouthfeel, and increases residual mouthwash adherence to oral cavity surfaces;
- and said liquid mouthwash product has a viscosity varying between slightly viscous and soft gel consistency, and at high viscosity exhibits thixotropic properties;
- and said liquid mouthwash product has a transparent or translucent optical clarity.
Dependencies are inferred from the claim text.