Patent ID: 7985423

Claim:
Freeze-dried, water-in-oil emulsion-templated porous bodies each comprising a three dimensional open cell lattice which is soluble in non-aqueous media, said lattice containing (a) 10 to 95% by weight of a polymeric material which is soluble in the non-aqueous media and (b) 5 to 90% by weight of a surfactant which is soluble in the non-aqueous media, said porous bodies having an intrusion volume as measured by mercury porosimetry of at least about 3 ml/g; and comprising two types of pores: (1) from the sublimation of solid ice from the water phase of the emulsion, and (2) from the sublimation of the oil phase of the emulsion, wherein a water-soluble material is incorporated into the lattice of said porous bodies to be dispersed in the non-aqueous media when said lattice dissolves, said lattice visually fully dissolving in the non-aqueous media in less than 3 minutes when 0.1 g of said porous bodies are stirred with 2 ml of the non-aqueous media at 20° C.