Investigation of Different Conditions for Polyethylene Preparation by Phillips Chromium-based Catalyst in Slurry Phase

Commercial linear polyethylene, the most commonly used type of plastic, was born more than half a century ago with the accidental discovery at Phillips Petroleum Company thatchromium oxide supported on silica can polymerize α-olefins [1-3]. The same catalyst system, modified and evolved, is usedeven today by dozens of companies throughout the world, and it accounts for a large share of the world’s high-density polyethylene (HDPE) supply, as well as some low-densitypolymers [2,4]. The catalyst is now more active and has been tailored in numerous ways for many specialized modernapplications [5,6]. This investigation provides a comparison between different conditions for polyethylene preparation inthe presence of Phillips chromium-based catalyst used in Arya Sasol Polymer Company (ASPC) and some different amountsof 1-hexene co-monomer and the data obtained from the activity of the catalyst, temperature raise, pressure and also the MFI, density and bulk-density analyses of each product