| abstract |
The precursor for the preparation of catalysts for the (co) polymerization of α-olefins, containing titanium, magnesium, at least one metal selected from hafnium and zirconium, aluminum and chlorine, obtained as a result of the implementation of the method, including processing using a siloxane compound. The solid precursor used in combination with a suitable cocatalyst for high temperature (co) polymerization of α-olefins demonstrates improved performance, a high degree of incorporation of comonomers in the copolymerization of ethylene, and increased thermal stability with respect to systems that are still in use. |