| abstract |
Polyethylene composition, comprising a base resin comprising three fractions (A), (B) and (C) of ethylene homopolymer or copolymer with different weight average molecular weights MW, in which a) fraction (A) it has an MFR21 equal to or less than 20 g / 10 min, b) fraction (B) has a weight average molecular weight less than fraction (C), c) fraction (C) has a weight average molecular weight less that fraction (A), d) the composition has a viscosity at a shear stress of 747 Pa (eta747) of 350 kPaus or greater, and e) the composition has an MFR5 of 0.15 g / 10 min or greater and a surface of white dots of 1% or less. |