POLYETHYLENE COMPOSITION FOR BLOW MOLDING HAVING HIGH STRESS CRACKING RESISTANCE.

摘要

Polyethylene composition suitable for producing small articles by blow molding, particularly flexible and collapsible tubes, said composition having the following features: 1) density from more than 0.948 to 0.955 g/cm3; 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) long-chain branching index, LCBI, equal to or greater than 0.55.