Abstract: The present invention relates to a process to produce polyethylene through homopolymerization or copolymerization of ethylene with alpha-olefins in the presence of a titanium amide catalyst supported by an organic polymer material, for the production of moldings, such as through extrusion, injection molding, film blowing, sintering under pressure or ram extrusion. The catalyst according to the present invention contains a partially chloromethylated styrene divinyl benzene copolymer as the organic polymer material, a complex compound supported by it, which contains Mg, Al and Ti.

Abstract: The present invention relates to a process for producing polyethylene of very high molecular weight and a method for activating the catalyst support. The parameters related to the gaseous phase fluidized bed process were determined: the temperature in the reactor, the speed of the cycle gas, the effective time of retention inside the reactor and the concentration values of buten-1 and CO2 in the cycle gas. It also relates to a thermal activation method specially intended for silicate carriers of the chromocen catalyst (the mass loss is coupled with the temperature).