PROCEDIMIENTO PARA LA OBTENCION CATALITICA DE POLIETILENO Y SUS COPOLIMEROS CON ALFA-OLEFINAS

摘要

A catalytic system constituted by:… a) a trialkylaluminium; and… b) a solid catalytic component obtained by the reaction of:… b1) an alkylaluminium halide, with… b2) the product of the reaction between a hafnium halide, an alcoholate of silicon, a magnesium halide, an aliphatic alcohol and a titanium alcoholate.