Lotions containing liquid-loaded powder
AssigneePurepac, Inc.
InventorLarry D. Nichols
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Abstract
An emulsifier-free lotion suspension of at least one liquid in another liquid, the lotion having high intrinsic stability. The lotion is prepared by combining microscopic particles of soft, porous, frangible polymer material containing at least a first liquid with a second liquid in free form. The amount of free liquid is sufficient to achieve a creamy texture without allowing bouyant movement of the particles. The softness of the particles is sufficient to enable the lotion to leave essentially no visible residue when rubbed onto the skin. The polymer material preferably takes the form of a microporous cellulosic powder.
Claims13
An emollient lotion composition comprising a liquid-containing microporous cellulosic powder material having an entrapped liquid agent content varying from about 50% to about 95% by weight, the cellulosic powder material formed by spray evaporation of a solution of a cellulosic polymer and a pore-forming solvent as powder particles having an average diameter varying from about one to 500 microns, said particles being frangible and being further characterized as microporous with interconnecting pores ranging in size from about one to about 500 nanometers, said liquid agent being loaded within said pores, said particles being sufficiently frangible so as to release the liquid agent upon application of frictional force, and a base liquid for the powder material, wherein the particles are suspended in the base liquid to provide a stable, emollient lotion composition and the base liquid constitutes about 30 percent to about 60 percent of the composition by volume.
Dependencies are inferred from the claim text.