| 摘要 |
<p>A catalyst precursor, catalyst, prepolymer, methods for preparing same and olefin polymerization processes employing such catalysts are provided. The catalyst precursor is prepared by the process comprising adding a magnesium source to a solution comprising at least one transition metal compound and an alkyl halide, wherein the magnesium source is prepared by reacting magnesium, an alkyl halide and a Bronsted acid. The catalyst precursor, catalyst, prepolymer and polymer exhibit a relatively large mean particle size, a reduced amount of fines and the prepolymer exhibits an increased molecular weight.</p> |
