Ultrafine sodium bicarbonate powder
AssigneeChurch & Dwight Co., Inc.
InventorsM. Stephen Lajoie, Anthony E. Winston
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Abstract
This invention provides alkali metal bicarbonate powder consisting of a narrow size distribution range of ultrafine particles. The ultrafine powder has a large surface area, and provides enhanced reactivity in applications such as deodorization or neutralization, and exhibits increased antibacterial/antifungal activity. The ultrafine powder also has an exceptional capability to form a homogenous solid-phase suspension in a liquid medium which has long term stability.
Claims2
A process which comprises spray-drying a mist of aqueous alkali metal bicarbonate solution to form alkali metal bicarbonate powder having an average particle size between about 100-800 nanometers;
- wherein the aqueous solution contains between about 0.1-10 weight percent of alkali metal bicarbonate, and the aqueous mist has a droplet size less than about 50 microns in diameter, and the spray-drying is conducted at a temperature between about 80.degree.-160.degree. C.
Dependencies are inferred from the claim text.