Study of SiO_2 supporting on metallocene(IV)——copolymerization of ethylene and α-olefin via SiO_2/MAO/Et(Ind)_2ZrCl_2

Ethylene and styrene were copolymerized by using SiO 2/MAO/Et(Ind) 2ZrCl 2 activited with Aluminonane(MAO). When the time of copolymerization was 30 minutes, the temperature of copolymerization was 40 ℃, the radio of Aluminium to Zirconlum was 300, the concentration of supported metallocene was 2.17×10 -6 mol/L, the atactic ES copolymers were produced. The effect of comonomer in the copolymerization was not observed. With the comonomer ratio increased, the catalytic activity, the copolymer properties, such as molecular weight and melting point of the copolymer were decreased.