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AssigneeColgate-Palmolive Company
InventorsJohn P. Hauschild, Joseph R. Principe
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Functional agglomerated speckles, for incorporation in dentifrices, include agglomerates of a water insoluble powdered functional material and a mixture of a water insoluble, ethanol soluble ethyl cellulose binder and a suitable water soluble binder, such as polyvinyl pyrrolidone. Such speckles, while more "soluble" or disintegrable in a flavored dentifrice than those based on ethyl cellulose binders without PVP, still can 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, they will soften sufficiently so as then to be essentially impalpable to one utilizing the dentifrice in brushing his teeth. Despite such softening the speckles continue to maintain their identity as separate small bodies in the dentifrice. The invented 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 dentifrices incorporating the present speckles, methods for manufacturing the speckles and 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 a combination of a water insoluble, ethanol soluble ethyl cellulose binder and a water soluble binder.
A process for preparing a dentifrice comprising water, humectant, detergent and flavor, all of which are constituents of a dental vehicle of the dentifrice, a gelling agent, 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, a water insoluble, ethanol soluble ethyl cellulose binder, and a water soluble binder, which comprises mixing the water insoluble powdered functional material with powdered water soluble binder, dissolving the ethyl cellulose in a volatile solvent, moistening the mix of water soluble binder and functional material with the solution of ethyl cellulose, compacting the moistened powder, 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, comprising water, humectant, gelling agent, detergent and flavor, and deaerating the dentifrice subsequently or concurrently.
Dependencies are inferred from the claim text.