Ethylene-aromatic vinyl compound-vinyl norbonene terpolymer
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United States of America Patent
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Issued Date -
Jul 10, 2003
app pub date -
Jun 7, 2002
filing date -
Dec 20, 1999
priority date (Note) -
Abandoned
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Abstract
The ethylene/aromatic vinyl compound/vinylnorbornene terpolymer according to the present invention is prepared by copolymerizing 50-90 mol % of ethylene, 1-55 mol % of an aromatic vinyl compound and 1-55 mol % of a vinylnorbornene under a catalyst system consisting of a transition metal compound represented by formula (I) and a cocatalyst, where M represents a transition metal of Group IV of the Periodic Table such as titanium, zirconium or hafnium; Cp' is a non-substituted cyclopentadienyl group; a cyclopentadienyl group with 1 to 4 liner alkyl substitutes; an indenyl group; a substituted indenyl group; a fluorenyl group; or a substituted fluorenyl group; Y is a hydrogen or a silyl group of C.sub.1-10, an alkyl group of C.sub.1-10, an aryl group of C.sub.1-10, or a combination thereof; A is an alkyl group of C.sub.1-30, an alkylamide group of C.sub.1-30 or a derivative of cyclopentadienyl group which is identical to Cp'; and X is selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, an aryl group or a diene group.
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