| 摘要 |
<p>1490509 Solid catalytic complex for olefin polymerization SOLVAY & CIE 13 April 1976 [14 April 1975] 15054/76 Heading C3P Olefins are polymerized in the presence of a catalyst comprising (A) an organometallic compound and (B) a solid transition metal catalytic complex prepared by reacting, in any order, (1) a magnesium compound, (2) a titanium compound, (3) a zirconium compound and (4) an organo aluminium halide, compounds (1) to (3) being halogen- or organic oxygen-containing compounds, and the four compounds (1) to (4) being used in such proportions that the product (Zr/Ti).X/(Mg+Zr+Ti) is at least 3, where X is the halogen proportion, and Mg, Ti and Zr the corresponding metal proportions, in gram-atoms. Regulators such as hydrogen, zinc or cadmium diethyl, alcohols, carbon dioxide or Group IVa or Va alkoxides may also be added to the final catalyst. Typical examples refer to the polymerization of ethylene or ethylene/butene-1 in hexane in the presence of hydrogen and of catalysts (A) i-Bu 3 Al and (B) the reaction products of (1) Mg(OEt) 2 or MgCl 2 , (2) Ti(OnBu) 4 or TiCl 4 , (3) Zr(On.Bu) 4 or ZrCl 4 and (4) EtAlCl 2 .</p> |
