CATALYTIC SOLID USABLE FOR THE STEREOSPECIFIC POLYMERISATION OF ALPHA-OLEFINS, PROCESS FOR PREPARING IT AND PROCESS FOR POLYMERISING ALPHA-OLEFINS IN ITS PRESENCE

摘要

A catalytic solid based on complexed TiCl3 is obtd. by heating, in presence of a halogenated activator, the liq. resulting from contacting TiCl4, pre-treated with an electrodonor, with a compsn. (C) of formula AlRp(Y)qX3-(p+q), where R = hydrocarbon gp.; Y = OR', SR' or NR'R''; R', R'' = hydrocarbon gp. of H; X = halogen; p, q = 0-3; p+q = 0-3.