| 摘要 |
Until now, olefin polymerization catalysts based on a metallocene, an alumoxane and a support have been highly uneven in quality. A new process had now been developed for the preparation of a supported olefin polymerization catalyst, wherein (a) a metallocene/activator reaction product in ratio of aluminium to transition metal 50 : 1 to 25 : 1, a solvent capable of dissolving it, and a porous support are brought into mutual contact, and (b) the solvent is removed, and wherein step (a) is carried out so that the porous support is impregnated with an amount at maximum its pore volume of the metallocene/activator reaction product and solvent in amount maximally of same content than the content of its pores and concentration of transitional metal counted like zirconium is 0,2 to 2,0 % wt.
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