| 摘要 |
In one aspect, the invention relates to a method for producing a polymerization . catalyst, the:method comprising: (a):providi?g.a..catalyst support material. comprising a magnesium component bound or complexed to a metal oxide component, the magnesium component being either a magnesium(Y) component wherein Y is an alkoxide group or amido group, or an alcohol-adducted magnesium halide component; (b) reacting the magnesium component with one or more silane halide compounds to provide a modified catalyst support material containing in situ-generated alkoxysilane or amidosilane electron donor compounds; (c) combining the modified catalyst support material with one or more catalytically active transition metal compounds to provide a catalyst precursor; and d) combining the catalyst precursor with one or more catalyticaliy active main group metal compounds. In another aspect, the invention relates to a method for polymerizing one or a combination of olefins by contacting the one or combination of olefins with the above polymerization catalyst under polymerization conditions. |
