Non-pressurized dispensing system

B - Operations – Transporting – 67 – D

Patent

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134/42, 32/59, 2

B67D 7/60 (2010.01) A01N 25/06 (2006.01) A61K 8/04 (2006.01) A61K 9/12 (2006.01) A61L 9/01 (2006.01) A61L 9/04 (2006.01) A61L 9/14 (2006.01) B05B 7/00 (2006.01) B05B 11/04 (2006.01) C09K 3/22 (2006.01) C09K 3/30 (2006.01)

Patent

CA 1148439

ABSTRACT OF THE DISCLOSURE A water-in-air emulsion or suspension containing a dispensible material is formed by stabilization of small droplets of aqueous liquid with an interfacial barrier of very fine, hydro- phobic metal oxide particles such as silane modified silica. As the droplets are subjected to shear such as during passage through an orifice, and/or on the surface of the target, the shear forces experienced at least partially destabilize the barrier allowing the droplets to coalsesce to form particles of controlled density and increased size and eventually can be totally destabilized into an elegant cream or lotion. At least 10% of the droplets may coalesce into particles after leaving the orifice. Active ingred- ients such as antiperspirants may be added to either the aqueous liquid phase or to the powder phase as long as they do not de- stabilize the suspension. A non-pressurized system comprises a container suitable for dispensing the suspension having a compart- ment receiving the suspension, a valve means having an outlet ori- fice of a dimension adapted to impart a preselected shear and de- stabilization to the suspension and the container being adapted to enable the suspension to be propelled through the outlet orifice. A shaker-top container can also be used as a dispenser.

349617

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