Method for preparing a water/oil/water multiple emulsion

Details Method for preparing a water/oil/water multiple emulsion Method for preparing a water/oil/water multiple emulsion

2008-01-15

2008-01-15

Egwim, Kelechi C. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S056000

Reexamination Certificate

active

07319117

ABSTRACT:
The invention concerns a method for preparing a multiple emulsion comprising an invert emulsion consisting of an internal aqueous phase dispersed in an internal organic phase, dispersed in an external aqueous phase: the internal aqueous phase comprising optionally at least a hydrophilic active substance; the internal organic phase comprising optionally at least a hydrophobic active substance; the invert emulsion comprising at least an internal surfactant and/or at least an internal amphiphilic polymer; the external aqueous phase comprising optionally at least a hydrophilic active substance and at least an external surfactant and/or an external amphiphilic polymer.

REFERENCES:
patent: 5100951 (1992-03-01), Fillipo et al.
patent: 7101931 (2006-09-01), Lannibois-Drean et al.
patent: 7214717 (2007-05-01), Jaques Bibette et al.

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