VLDPE Synthesis by Radical Ethylene Polymerization in Tubular Reactors–Negative Factor or Unrealized Opportunities

Abstract

This paper presents the results of polymeric deposit anal. in HP recycling system on two ethylene polymerization trains in tubular reactors when using mixed initiation (organic peroxides and oxygen) in the process of various grade production It is demonstrated that polymers belong to the very low d. type (with ρ in 0,860 to 0,900 g/cm3 range), due to ultra high branching. Consideration is given to known processes of that kind polymer production There discussed the alternatives of different approaches to special process features found. It is stated that 80-yr high pressure PE synthesis history has been keeping potential for the development.