Process for the preparation of polyethylene

摘要

The invention relates to a slurry process for the preparation of polyethylene with a density greater than 960 kg/m<3> and a melt index (HLMI) between 35 and 60 g/10 min, by polymerizing ethylene in the presence of a chromium-containing catalyst The polymerization takes place at a temperature of at most 105 DEG C and in the presence of at most 50 mu mol/litre diluent of an alkyl-containing co-catalyst. More preferably the process takes place in the absence of an alkyl-containing co-catalyst. The invention also relates to moulded products, such as for example milk bottles, obtained with this polyethylene.