| abstract |
Copolymers of ethylene and alpha-olefins having (a) a density in the range 0.900 - 0.940 g/cm3, (b) a molecular weight distribution (Mw/Mn) in the range 3.5 to 4.5, (c) a melt elastic modulus G’ (G”=500 Pa) in the range 40 to 150 Pa and (d) an activation energy of flow (Ea) in the range 28 - 45 kJ/mol. are suitably prepared in the gas phase by use of a supported metallocene catalyst system. The novel copolymers show improved processability and are particular suitable for use in blown film applications. |