Patent ID: 7947783

Claim:
A multimodal polyethylene composition wherein (i) the composition has an MFR 2 of 0.05 to 100 g/10 min, and (ii) the environmental stress crack resistance ESCR measured in hours according to ASTM 1693, condition B and E-modulus EM measured according to ISO 527-2:1993 in MPa satisfy the following relation: ESCR≧−EM h/MPa+1150h and wherein the composition comprises: (A) a fraction of a copolymer of ethylene with one or more alpha-olefins, with a weight average molecular weight M w of 300,000 g/mol or more; (B) a first ethylene homo- or copolymer fraction; and (C) a second ethylene homo-or copolymer fraction; wherein fraction (A) is present in the composition in an amount of from 1 to 20 wt %; wherein fraction (B) has a lower average molecular weight than fraction (C).