Catalyst for production of vinyl-based polymer and process for production of vinyl-based aromatic polymer
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United States of America Patent
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Jan 12, 1999
Grant Date -
N/A
app pub date -
Sep 27, 1995
filing date -
Mar 31, 1993
priority date (Note) -
Expired
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Abstract
A catalyst for the production of a vinyl polymer, which comprises: in combination, (A) a transition metal complex of the formula: ##STR1## wherein each of T.sup.1, T.sup.2, T.sup.3 and T.sup.4, independently of each other, is C.sub.1-20 -alkyl or C.sub.6-20 -aryl, M is a Group IV-VI transition metal and Q is C.sub.1-20 -alkoxy, (B) an aluminoxane or ionic compound having a non-coordinating anion and a cation and (C) a Lewis acid. Component (B) can be a combination of an aluminoxane and an ionic compound having a non-coordinating anion and a cation.
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