Coating implements with material supply – Including means to apply material-moving force – Piston-provided reservoir
Reexamination Certificate
1996-07-26
2001-05-15
Walczak, David J. (Department: 3751)
Coating implements with material supply
Including means to apply material-moving force
Piston-provided reservoir
C401S205000, C401S206000
Reexamination Certificate
active
06231259
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to antiperspirant and deodorant compositions which contain a silicone latex as a thickening agent. In particular it relates to such compositions which additionally contain an auxiliary thickening agent.
Silicone latex thickened solvents and cosmetic compositions containing such silicone latex thickened solvents are described in U.S. Ser. No. 08/596,853 filed on Feb. 5, 1996. The silicone latex is a high internal phase dispersion of crosslinked silicone rubber particles in water. When added to a solvent such as cyclomethicone, it swells and substantially increases the viscosity of the solvent.
SUMMARY OF THE INVENTION
The present invention is directed to a composition comprising an antiperspirant salt suspended in a carrier vehicle thickened with a silicone latex. The composition typically comprises about 50 to 90% carrier vehicle, which is advantageously substantially comprised of a volatile silicone, about 3 to 30% antiperspirant salt, which is typically an aluminum chlorohydrate or aluminum-zirconium chlorohydrate, and about 3-25% silicone latex. Preferably the composition will contain an auxiliary thickening agent such as a fumed silica, typically in an amount of 0.01 to 0.1%. The composition will preferably have a viscosity of about 12,000 to 50,000 cP. The present invention also embraces an apparatus for delivering the above-described composition, said apparatus having a porous dome with a porosity of about 150&mgr; to 400&mgr; through which the composition is delivered.
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Murgida Matthew F.
Tucker William E.
The Gillette Company
Walczak David J.
Williams Stephan P.
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