POLYETHYLENE FOR THE PRODUCTION OF TIGHT HEAD DRUMS

摘要

The invention is directed to a pelletized ethylene polymer having:. a density > 954 kg/m3 and = 959 kg/m3 ( according to ISO 1183). a high-load melt index = 1.7 g/10 min and = 10 g/10 min (according to ISO 1133;190°C;21.6 kg)). an Izod impact strength (-30°C) = 40 KJ/m2 and = 90 KJ/m2 (according to ISO 180/A) and. Mw / Mn = 8 and = 17 (according to size exclusion chromatography). The strain hardening modulus of the polymer =10 and = 25 (according to the method as described in Elsevier, Polymer 46(2005) 6369-6379). The polyethylene is applied in the production of tight head drums.