POROUS PARTICLES IN PREPARATIONS INVOLVING IMMISCIBLE PHASES

摘要

Immiscible phases, particularly polar and non-polar liquids, semi-solids or solids, are combined in a composition where one is finely dispersed throughout the other without reliance upon emulsifying agents to either create or stabilize the dispersion. The composition is formed by placing the discontinuous phase in the pores of solid inert porous particles, in which the pores are in the form of an interconnected network open to the exterior of the particles to provide interfacial contact with the continuous phase. The particles are then dispersed in the continuous phase. The concept is applicable to oil-in-water and water-in-oil type dispersions, and the disadvantages and shortcomings of emulsifying agents are entirely avoided.