Method fo the preparation of a catalyst suitable for the polymerisation of an olefin
Patents
| Language: |
Английский |
| Type: |
Invention |
| Number |
EP 830391 B1 |
| Request number: |
906908385.6 |
| Request date: |
Apr 9, 1996 |
| patent.field.start_date: |
|
| Registration date: |
Jun 16, 1999 |
| patent.field.request_publication_date: |
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The invention relates to a method for the preparation of a catalyst suitable for the polymerisation of an olefine by contacting a magnesium compound with a halogenized Ti compound, characterised in that the magnesium compound is obtained by: a) contacting metallic magnesium with an aromatic halide RX, where R is an aromatic group containing from 6 to 20 carbon atoms and X is a halide, whereupon the dissolved reaction product I is separated from the solid residual products and then b) adding an alkoxy group or aryloxy group-containing silane compound to the obtained reaction product I at a temperature of from -20 to 20 °C, whereupon the precipitate formed is purified to obtain reaction product II, which subsequently during a step c is contacted with TiCl4 as halogenized Ti compound and is purified to obtain a catalyst.