| 摘要 |
A polyethylene comprises ethylene homopolymers and/or copolymers of ethylene with 1-alkenes and has a molar mass distribution width of 5-30, a density of 0.92-0.955 g/cm3>, a weight average molar mass of 50000-500000 g/mol and has 0.01-20 branches/1000 carbon and a z-average molecular weight of less than 1 Mio.g/mol. An independent claim is included for a catalyst compostion comprising at least two different polymerization catalysts of which (A) is at least one polymerization catalyst based on hafnocene (A) and (B) is at least one polymerization catalyst based on an iron component having a tridentate ligand each bearing a halogen or tert, alkyl substituent in the ortho position (B). |
