Antiperspirants and method of applying antiperspirant using a shaped article
AssigneeThe Gillette Company
InventorsBrian Edward Causton, Frederick Charles Baines
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Abstract
A water-insoluble porous cross-linked polymeric matrix contains an antiperspirant in its pores, the pores being interconnected to permit the antiperspirant to be leached therefrom with water, with zero order release without change in pore geometry. The pores may additionally contain one or more other materials such as deodorants, moisturizers, lubricants and perfumes. The matrix can be shaped for application to the skin. An antiperspirant dispenser can comprise a matrix of the invention with a water reservoir therefor.
Claims11
An antiperspirant product which comprises a dry water-insoluble, porous, polymeric matrix having a solid, particulate antiperspirant homogeneously distributed therein in interconnecting pores thereof, the product being in the form of a hard shape having a porous structure which is substantially rigid and stable, wherein said polymeric matrix comprises a polyacrylate, polymethacrylate, epoxy, polystyrene, polyvinylchloride, phenol formaldehyde, polyurethane, polyolefin, polyamide, polyacrylamide, polymethacrylamide or silicone resin, whereby said product leaches said antiperspirant out of said matrix upon contact with water.
A method of making an antiperspirant product which comprises forming a mixture of a solid particulate antiperspirant and matrix-forming monomer, polymerizing said matrix-forming monomer to form a dry water-insoluble, porous polymeric matrix with the antiperspirant homogeneously distributed therein in interconnecting pores thereof.
Dependencies are inferred from the claim text.