POLYETHYLENE COMPOSITION FOR BLOW MOLDING HAVING HIGH STRESS CRACKING RESISTANCE

摘要

Polyethylene composition with improved balance of impact resistance at low temperatures and Environmental Stress Cracking Resistance (ESCR), particularly suited for producing protective coatings on metal pipes, said composition having the following features:
1. density from more than 0.948 to 0.955 g/cm 3 ;
2. ratio MIF/MIP from 12 to 25;
3. MIF from 25 to 40 g/10 min.;
4. Mz from 1000000 to 2000000 g/mol;
5. LCBI equal to or greater than 0.55.