MAGNESIUM HALIDE ADDUCT, OLEFINS POLYMERIZATION CATALYST COMPONENT AND CATALYST MADE THEREFROM

摘要

The component of magnesium halide adduct is represented by MgX₂ mROH nE pH₂O,in which X is chlorine, bromine,C₁-C₁₄alkoxy or aryloxy;R is C₁-C₁₂ alkyl,C₃-C₁₀ cycloalkyl or C₆-C₁₀ aryl; E is represented by the general formula (II), wherein R₁ and R₂ which can be the same or different to each other, are hydrogen or linear or branched C₁-C₁₀ hydrocarbon groups,C₃-C₁₀ cycloalkyl,C₆-C₁₀ aryl,C₇-C₁₀ alkaryl or aralkyl,optionally,the said aryl or alkylaryl or arylalkyl is substituted by one or more halogen in the aromatic ring,R₁ and R₂ can form ring or fused ring.R₃and R₄ have the same meaning of R₁ and R₂ except that they can't be hydrogen,m is 1-5,n is 0.005-1.0,and p is 0-0.8. Spherical catalyst component and catalyst made from the above spherical magnesium halide adduct and their use in polymerising the alpha-olefins CH2=CHR and their mixture are provided, in which R is hydrogen or C₁-C₁₂ alkyl or aryl.