| 摘要 |
The invention relates to novel oxygen- containing organoaluminum complexes of general formula (I) in which R 1 independently represents branched or unbranched C1-C 7 alkyl, C1-C7 cycloalkyl, C1-C7 alkenyl, C1-C7 cycloalkenyl, C1-C7 aryl, or C1-C7 alkinyl; R2 represents unsubstituted, monoalkylated or multialkylated, and/or monofluorinated or multifluorinated aromatic hydrocarbons from group; R3 and R4 independently represent CH2, CF2, or C(R1) 2; and m and n each independently represent 0, 1, 2. Said compounds can be used as cocatalysts in olefinic polymer reactions, particularly for producing novel Ziegler-Natta catalysts having improved properties, especially higher activities than conventional Ziegler-Natta catalysts using AIEt3, as a cocatalyst, or novel coordination catalyst systems which have higher activities than conventional Ziegler-Natta catalysts already at temperatures as low as 60 °C and at a pressure of 2 bar.
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