Six kinds of heterogeneous catalysts were prepared by supporting iPr (Flu)(Cp)ZrC12 (1) and Cp2ZrCl 2 (2) on A1203, MgCI2 and SiO z, and propene polymerization was conducted with these supported catalysts using a common alkylaluminium, AI(CH3)3, as cocatalyst. The I/A1/O 3 and I/MgCI2 catalysts gave highly syndiotactic polypropylene whereas the 2/A120 3 and 2/MgC12 catalysts gave atactic polypropylene in fairly good yields. In contrast, the SlOe-supported catalysts were found to be inactive for propene polymerization.
Посилання на статтю:
Polymerization of propene with catalyst systems composed of AI20 3 or MgCl2-supported zirconocene and AI (CH 3) 3 / Manabu Kaminaka* and Kazuo Soga // Polymer. – 1992. – Vol 33. – P. 1105-1107.