Patent ID: 8772426

Claim:
A copolymer of ethylene and an α-olefin said copolymer having (a) a density D in the range 0.900-0.940 g/cm 3 , (b) a melt index MI 2 (2.16 kg, 190° C.) in the range of 0.01-50 g/10 min, (c) a melt index MI 2 (2.16 kg, 190° C.) and Dow Rheology Index (DRI) satisfying the equation [DRI/MI 2 ]>2.65, and (d) a Dart Drop Impact (DDI) in g of a blown film having a thickness of 25 μm produced from the copolymer satisfying the equation DDI≧19000×{1−Exp[−750( D− 0.908) 2 ]}×{Exp[(0.919− D )/0.0045]}.