ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,296, issued on Sept. 8, was assigned to INEOS EUROPE AG (Vaud, Switzerland).
"Polypropylene blend" was invented by Michel Gorgerin (Masnuy-Saint-Jean, Belgium) and Annick Libotte (Nivelles, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "A composition is disclosed comprising a blend of 90-99 wt %, based on the blend, of a random propylene copolymer having an melt flow rate (MFR 230deg C./2.16 kg) of 15-40 g/10 min and containing 1.5-2.5 wt % ethylene, and 1-10 wt %, based on the blend, of an ethylene based plastomer having a density of 860-915 kg/m3 and an MI2 (190deg C./2.16 kg) of 0.5 to 25 g/10 min. The blend preferably has an MFR of 15-35...