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US 2006/0134013 A1Published application
Coated natural calcium carbonate oral care toothpowder composition
AssigneeColgate-Palmolive Company
InventorsNina Sharma, Ramesh Nair
Life of this patent
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Abstract
Toothpowder comprising natural calcium carbonate with a flavor oil coating is derived by agitating a particulated calcium carbonate bed and by spraying a nebula of flavor oil into the bed. The spray rate is controlled to preclude formation of agglomerated particles of the coated natural calcium carbonate.
Claims17
Toothpowder, comprising:
- (a) from about 85 to about 100 weight percent particulated natural calcium carbonate wherein said particulated natural calcium carbonate comprises a set of natural calcium carbonate particles having a set of calcium carbonate surfaces;
- and
- (b) flavor oil coating on a majority of calcium carbonate surfaces in said set of natural calcium carbonate surfaces.
A method for making toothpowder, comprising:
- (a) agitating a bed of particulated calcium carbonate to provide an agitated bed of calcium carbonate, said particulated calcium carbonate comprising not less than 85 weight percent natural calcium carbonate;
- and
- (b) admixing nebulized flavor oil into said agitated bed to provide coated natural calcium carbonate;
- (c) wherein said agitated bed of natural calcium carbonate has a volumetric circulation rate and a bed shear rate, and said admixing meters said nebulized flavor oil into said agitated bed at a volumetric rate sufficient, at said volumetric circulation rate and at said bed shear rate, for essentially precluding formation of agglomerated particles of said coated natural calcium carbonate.
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Dependencies are inferred from the claim text.