The process of su00ecntese of a component catalu00ectico for polyethylene production, catalu00ectico system for polyethylene production, process of su00ecntese polyethylene, and.Ultra high molecular weight polyethylene

摘要

"The process of su00ecntese of a component catalu00ectico for polyethylene production, catalu00ectico system for polyethylene production, process of su00ecntese polyethylene, and.Ultra high molecular weight polyethylene ".The present invention relates to a process for the synthesis of a component catalitico for production of ultra high molecular weight polyethylene.Comprising the production of a catalytic system comprising a catalytic component and a co catalyst and production of polyethylene by a polymerization reaction.Preferably performed in two stages.The said catalytic component comprises: (a) a product of the reaction of an organic compound of magnesium containing oxygen and a titanium organic compound containing oxygen.With a reducing agent; (b) a product of the reaction of an organic compound of magnesium containing oxygen, an organic compound of titanium containing oxygen and a titanium halide.With a reducing agent; (c) a product of the reaction of an organic compound of magnesium containing oxygen, a titanium organic compound containing oxygen.An organic compound of vanadium containing oxygen and a titanium halide with a reducing agent, the reducing agent is preferably an aluminum halide.After the reaction, the catalytic component (a),(b) or (c) is subjected to the heat treatment which comprises the heating at a temperature of 50 198 C and 300 198 C for a period of 30 minutes to 24 hours.Being subsequently added Co catalyst, comprising an organic compound of aluminum.The first stage of polymerization, designated as pre polymerization, is performed at a temperature between 5 and 110 198 C and a pressure between the atmospheric and 8 kgf / cmu00ac 2u00ac.The mass of the ethylene monomer is added in proportion to the content of the titanium catalytic system, being in general 1 to 1000 times greater than the mass of titanium, preferably from 10 to 300 times.In the second stage of polymerization.A part of the product of the pre polymerization is added to the reaction medium where again there is the addition of Co catalyst and ethylene to a temperature generally between 50 and 110 198 C,As the mass of between 10000 to 1000000 times greater than the mass of titanium, preferably between 100000 and 400000 times.The pressure of polymerization is understood in general between the atmospheric pressure and 30 kgf / cmu00ac 2u00ac.