POLYETHYLENFORMMASSE ZUR HERSTELLUNG VON FOLIEN UND VERFAHREN ZUR HERSTELLUNG DER FORMMASSE IN GEGENWART EINES GEMISCHTEN KATALYSATORS

摘要

Molding mass of polyethylene having a density of 0.915-0.955 g/cm 3>, a melt index (MI) of 0-3.5 g/10 minutes and a melt flow ratio (MFR) of 5-50, a molecular mass distribution width (Mw/Mn) of 5-20 and an z-averaged molecular mass (Mz) of less than 1 million g/mol. Independent claims are included for: (1) the preparation of molding mass of polyethylene; (2) mixed catalyst, which is a component of pre-polymerized chrome compounds and other components like metallocene compounds; preparation of foils comprising plastifying the molding mass at a mass temperature of 190-230[deg]C, pressing the plastified molding mass through a column nozzle on a cooling roll and followed by cooling; and (3) a foil for preparing the molding mass containing 50-100 wt.% of polymer material.