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US 10,342,752 B2Granted
Tooth whitening oral care product
AssigneeColgate-Palmolive Company
InventorsVenda P. Maloney, Suman K. Chopra, Rahul Patel
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Abstract
A tooth whitening composition containing film flakes of a hydroxyalkyl methyl cellulose and a pigment in combination with an orally acceptable carrier vehicle.
Claims19
A tooth whitening oral care composition comprising:
- (i) film flakes of a single-layer water-soluble whitening film comprising
- (a) a film forming polymer comprising hydroxyalkyl cellulose wherein the hydroxyalkyl cellulose has a viscosity of about 1 to less than about 1000 millipascal seconds (mPa·s) as determined as a 2% by weight aqueous solution of the polymer at 20° C. using a Ubbelohde tube viscometer;
- and
- (b) a pigment having a blue to blue-violet color with a hue angle in the CIELAB system ranging from 220 to 320 degrees, wherein the film flakes have a dissolution rate of about 30 seconds or less, and
- (ii) an orally acceptable carrier vehicle;
- wherein the particle size of the film flakes is 30 to 80 mesh.
3 more elements
A tooth whitening oral care composition comprising:
- (i) film flakes of a single-layer water-soluble whitening film comprising
- (a) a film forming polymer consisting essentially of hydroxyalkyl cellulose wherein the hydroxyalkyl cellulose has a viscosity of about 1 to less than about 1000 millipascal seconds (mPa·s) as determined as a 2% by weight aqueous solution of the polymer at 20° C. using a Ubbelohde tube viscometer;
- and
- (b) a pigment having a blue to blue-violet color with a hue angle in the CIELAB system ranging from 220 to 320 degrees,
- wherein the film flakes have a dissolution rate of about 30 seconds or less, and
- (ii) an orally acceptable carrier vehicle;
- wherein the particle size of the film flakes is 30 to 80 mesh.
4 more elements
Dependencies are inferred from the claim text.