Linear low density, process for preparation thereof and films made therefrom

A unimodal linear low density polyethylene (LLDPE) formed of ethylene and at least one comonomer alfaolefinaC3-12 by metallocene catalysis hafnium having the following properties: a density of 915-950 kg / m3 (measured according to ISO 1183), one MFR 2 in the range 0.5 to 6 (as measured by ISO 1133 at 190C, 2.16 kg) Mw / Mn in the range 2.5 to 4 (measured by GPC), a SHI pseudoplastic behavior (1 / 100) of at least 1.7 (determined as described in the memoriadescriptiva), a comonomer content of 2 to 10% by weight; a melting temperature (Tm) of 115-128 ° C; without long chain branching.