Antiperspirant product based on microemulsions

Details Antiperspirant product based on microemulsions Antiperspirant product based on microemulsions

2007-10-16

2007-10-16

Dodson, Shelley A. (Department: 1616)

Drug, bio-affecting and body treating compositions

Anti-perspirants or perspiration deodorants

C424S066000, C424S068000, C424S400000, C424S401000, C514S937000, C514S938000, C514S939000

Reexamination Certificate

active

10819781

ABSTRACT:
The present invention is an antiperspirant product, comprising:(a) an oil-in water microemulsion including an oil phase and a water phase and being substantially free of alcohol, said microemulsion further comprising:one or more oil-in-water emulsifiers selected from the group consisting of polyethoxylated oil-in-water emulsifiers, polypropoxylated oil-in-water emulsifiers and polyethoxylated and polypropoxylated oil-in-water emulsifiers, wherein said microemulsion has a total emulsifier content of less than 20% by weight, based on the total weight of the microemulsion, andone or more antiperspirants, having a total content of 5 to 40% by weight, based on the total weight of the microemulsion,wherein said microemulsion is prepared by bringing a mixture comprising the water phase, the oil phase, and the one or more oil-in-water emulsifiers to a temperature within or above the phase-inversion temperature range, and subsequently cooling it to room temperature, and(b) a pump atomizer, comprising:a container, andan atomizer pump comprising a riser tube, a cylindrical chamber which is placed under pressure by depressing a piston, a pump valve which closes the cylindrical chamber and opens under a pressure of at least 0.7 mPa, and two or more turbulence channels radiating to a nozzle opening, said channels causing a flowing liquid to rotate relative to a flow axis.

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