Dow Patents Silicone Resin Emulsion Process
Published November 15, 2005
Patent No. US 6,737,444 B1: Dow Corning Corp., Midland, MI, patented a method to make an aqueous silicone resin containing emulsion by mixing a silicone resin blend, a non-resinous silicone polymer and an inversion assisting polymer to form a homogeneous oil phase; mixing one or more surfactants with the homogenous oil phase; adding water to the mixture to cause an inversion of the continuous phase and the dispersed phase, forming an oil-in-water emulsion; diluting the oil-in-water emulsion by adding more water and recovering an oil-in-water emulsion with silicone particles ranging 0.1-5 microns in size.
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