Procatalyst component based on a transition metal compound on a carrier of magnesium chloride and manganese halide
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United States of America Patent
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Sep 2, 1997
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N/A
app pub date -
Jun 1, 1994
filing date -
Oct 2, 1991
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Abstract
Olefin polymerization catalysts the procatalyst component of which comprises a transition-metal compound on a magnesium chloride support material are known to all. Now the procatalyst component has been improved by incorporating a manganese (II) halide into it at a rate of at minimum approx. 0.1% and at maximum approx. 50% of the total molar amount of magnesium chloride and manganese (II) halide. The new polymerization catalyst has, among other things, the excellent special property that it yields a polyolefin with a broad molecular weight distribution.
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