ES230130A1 - Procedure for the continuous finishing of ethylene polymerization reaction products (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Process for finishing reaction products of the polymerization of ethylene at temperatures below 100º and pressures of below 100 atmospheres with the application of catalysts consisting of a metal-organic mixture, especially of aluminum-aluminum combinations, with metal combinations of the secondary group 4 -6 of the periodic system, especially with titanic combinations, for example titanium tetrachloride, working in the presence of an auxiliary liquid, preferably of aliphatic hydrocarbon, hydroaromatics or aromatics in the boiling range of benzine or diesel oil, characterized in that the finishing is carried out in continuous operation, the reaction mixture of the polymerization being decomposed first mechanically in an auxiliary liquid completely or partially free of polyethylene which is conducted back to the reaction vessel and in a polyethylene still containing auxiliary liquid and remains of the catalyst The particles of the auxiliary liquid are separated by evaporation by means of oxygen-free inert units, preferably with ethylene, the dried polyethylene, which still has remains of the catalyst in a mixing plant with alcohols preferably of the degrees of C, of C1-C4 for the removal of catalyst residues, being mechanically separated from the alcohol and alcohol residues by evaporation or treatment with an inert gas, the separated alcohol being decomposed in a fractionation facility in a fraction of waste that it still has a catalyst residue and a distillate fraction containing pure alcohol which is conducted back to the mixing plant. (Machine-translation by Google Translate, not legally binding)