Catalyst for producing living olefin polymer and process for producing the polymer
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United States of America Patent
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Sep 24, 2002
Grant Date -
N/A
app pub date -
Mar 3, 2000
filing date -
Sep 9, 1997
priority date (Note) -
Expired
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Abstract
A catalyst comprising an organoaluminum compound and a vanadium chelate compound having the lability to cause olefins to undergo living coordination polymerization is contacted with a terminal diolefin to obtain a catalyst for living polymer production. When the above contact is:conducted in the presence of a cycloolefin or an internal olefin, the yield of a living polymer can be improved. By modifying all ends of the living polymer obtained, a telechelic olefin polymer is obtained in which all the polymer chains are modified with functional groups.
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