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AssigneeColgate-Palmolive Company
InventorsJordan Barth, James Norfleet
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Functional agglomerated speckles, for incorporation in dentifrices, include agglomerates of a water insoluble powdered functional material and water insoluble, ethanol soluble ethyl cellulose. Such speckles satisfactorily maintain their integrity and identity during processing of the dentifrice after addition of the speckles to the main dentifrice body but on storage, after packaging of the dentifrice in dispensing tubes, soften sufficiently so as to become essentially impalpable to one utilizing the dentifrice in brushing his teeth. Despite such softening the speckles continue to maintain their identity as speckles in the dentifrice. The speckles are especially useful in translucent or transparent gel dentifrices which contain components, such as flavoring and surface active agents, which may controllably soften the speckles on storage. Also described in the specification are methods for the manufacture of the mentioned speckles, dentifrices incorporating them, methods for manufacturing such dentifrices and such dentifrices packaged in end use dispensing containers.
A dentifrice comprising water, humectant, gelling agent, detergent and flavor, all of which are constituents of a gelled vehicle of the dentifrice, and a dental polishing agent, uniformly distributed throughout the vehicle, and visible functional speckles distributed through the dentifrice which are agglomerates of a water insoluble powdered functional material and water insoluble, ethanol soluble ethyl cellulose binder.
A process for preparing a dentifrice comprising water, humectant, gelling agent, detergent and flavor, all of which are constituents of a dental vehicle of the dentifrice, and a dental polishing agent, uniformly distributed throughout the vehicle, and visible functional speckles distributed through the dentifrice which are agglomerates of a water insoluble powdered functional material and water insoluble, ethanol soluble ethyl cellulose binder, which comprises forming said speckles by moistening the water insoluble powdered functional material with a solution of water insoluble ethyl cellulose in a solvent, compacting the moistened powder and converting it to particulate form, drying the particles and collecting those that pass through a No. 10 U.S. Sieve Series sieve and are retained on a No. 80 sieve, dispersing the speckles in the continuous phase of the dentifrice and deaerating the dentifrice subsequently or concurrently.
Dependencies are inferred from the claim text.