Supercritical Mixing
Mixing plastics and their additives can be faciliatated by also mixing a supercritical fluid as compatibilizer and then removing this fluid after mixing is complete. (RDC 12//3/20100)
(Hoess et al, US Patent 7,790,079, 9/7/2010)
Recent US Patents
9/7/2010
7,790,079
Thermoplastic molding material and molding elements containing nanometric Inorganic particles for making said molding material and said molding elements, and uses thereof
Hoess et al of Evonik Rohm, Germany has developed a process for mixing nanoparticles with a resin by introducing a supercritical compatibilizer into the resin before adding the nanoparticles, extruding the mixture into a flash container, removing the solubilizer and, then extruding the composite for palletizing for further process. The solubilizer can be carbon dioxide, nitrous oxide, xenon, krypton, methanol, ethanol, isopropanol or isobutanol (RDC 11/29/2010)