| 摘要 |
<p>The present disclosure is directed to a catalyst comprising the reaction product of: (a) a silicon-containing compound having the structural formula Rn-4SiXn, where R is C1-C10 hydrocarbyl; X is halogen; and n is an integer of 1 to 4; (b) a magnesiumdialkyl having the structural formula R<1>R<2>Mg, where R<1> and R<2> are the same or different and are C2-C10 alkyl; (c) an alcohol having the structural formula R<3>OH, where R<3> is C1-C10 hydrdocarbyl; (d) a halide-containing metal compound, said metal selected from the group consisting of titanium, zirconium and vanadium; (e) an aluminium alkoxide having the structural formula Al(OR<5>)3, where R<5> is C2-C4 alkyl; and (f) a halide-containing metal compound, said metal selected from the group consisting of titanium, zirconium and vanadium, with the proviso that said reaction product is formed from said components (a) to (f) reacted in the order recited but for the interchangeability of components (a) and (b). The catalyst of this disclosure is useful, when provided in a catalytically effective amount and in the presence of co-catalytically effective amount of an organo-aluminium compound, in the polymerization of alpha-olefins.</p> |
