Patent ID: 7416735
Filing Date: 2008-08-26
Classification: A61K,A61L,A61Q,C11D,Y10S

Abstract:
1. A particle stabilizing composition comprising: a. an emulsion comprising about 1% to about 99%, by weight of the emulsion, of an internal phase and from about 1% to about 99%, by weight of the emulsion, of an external phase; b. a first charged species which is selected form the group consisting of a first polyanion and a first polycation wherein said first species is present in the emulsion; and c. charged insoluble solid particles comprising titanium dioxide that are dispersed in said emulsion in the presence of a second charged species which is selected from the group consisting of a second polyanion and a second polycation; wherein the first or second polyanion is selected from the group consisting of ammonium polyacrylate, sodium polyacrylate, potassium polyacrylate, ethylene acrylic acid copolymer, and mixtures thereof, wherein the first or second polycation is selected from the group consisting of quaterniums, quaternium-80, quaternium-61, polyquaterniums, and mixtures thereof; wherein the first charged species possesses a charge opposed to that of the second charged species and of the charged insoluble solid particles and wherein essentially all of the charged species and charged insoluble solid particles accumulate at the interface of the emulsion and wherein Brownian motion is not exhibited by the insoluble solid particles.