A method and apparatus for mixing two or more materials which are difficult to mix. The dispersion apparatus has a cylindrical housing which is divided into an upper chamber and a lower chamber by a baffle. The materials to be mixed are forced under high pressure into the lower chamber which is divided...http://www.google.es/patents/US5624186?utm_source=gb-gplus-sharePatente US5624186 - Multi-chamber high pressure dispersion apparatus
