Patent ID: 8932564
Filing Date: 2015-01-13
Classification: A61K,A61P,A61Q,B01J,C01P,C09C,Y10T

Abstract:
1. A method for forming treated particles, comprising: (a) coating core particles having an average particle size ranging from about 0.001 micron to about 0.5 micron with an anionic polymer; (b) coating the particles obtained in (a) with silicone; (c) contacting the coated particles obtained in (b) with a cross-linking agent, wherein the cross-linking agent comprises a stannous carboxylate capable of effectuating cross-linking of the silicone coating, thereby forming a cross-linked structure with the core particles encapsulated therein, and wherein the cross-linking is effectuated at room temperature with constant mixing; and (d) reducing the cross-linked structure into treated particles having an average particle size ranging from about 1 micron to about 50 microns, wherein each of the treated particles comprises one or more of said core particles encapsulated in a cross-linked silicone matrix.