Supported catalyst for producing syndiotactic styrenic polymer
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United States of America Patent
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Mar 7, 2006
Grant Date -
Jun 12, 2003
app pub date -
Dec 18, 2000
filing date -
Dec 30, 1999
priority date (Note) -
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Abstract
The present invention provides a supported catalyst comprising (A) a polymer (B) a supporter, (C) a transition metal compound, and optionally (D) (a) a compound which can form an ionic complex by the reaction with the transition metal compound or (b) a specific oxygen-containing compound, and (E) an alkylaluminum compound. The supported catalyst according to present invention, which has a high activity, can be used for preparing a styrenic polymer with a high syndiotacticity. The supported catalyst can be used in combination with a cocatalyst, preferably an alkyl aluminoxane.
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