Patent ID: 6709662
Filing Date: 2004-03-23
Classification: A61K,A61Q,B82Y

Abstract:
A Pickering emulsion, said Pickering emulsion being a finely dispersed water-in-oil or oil-in water system, said Pickering emulsion comprising:a) an oil phase; b) an aqueous phase; c) microfine particles, said microfine particles: i) having an average particle size of less than 200 nm; ii) being dispersible both in water and in oil; iii) having both hydrophilic and lipophilic properties resulting in amphiphilic character; and iv) being selected from the group consisting of metal oxides, which are coated on the surface thereof with: (A) a dimethylpolysiloxane and/or silica gel; and (B) aluminium hydroxide and/or alumina and/or silicon dioxide; d) at least one film former; and e) at most 0.5% by weight of one or more emulsifiers.