Polyethylene composition for pressure pipes with enhanced flexibility

摘要

The present invention relates to a polyethylene composition comprising a base resin which comprises
(a) an ethylene homo- or copolymer fraction (A); and
(b) an ethylene homo- or copolymer fraction (B),
wherein
(i) fraction (A) has a lower weight average molecular weight than fraction (B);
(ii) the base resin has a density of 932 to 938 kg/m 3 ;
(iii) the polyethylene composition has an MFR 5 of 0.1 to 0.6 g/10 min ; and
(iv) the polyethylene composition has a shear stress · 2.7 kPa of 85 to 230 kPas. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.