Process for producing olefin polymer
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United States of America Patent
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-
Mar 5, 2002
Grant Date -
N/A
app pub date -
Mar 24, 2000
filing date -
Jul 24, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for producing a polyolefin in the presence of a transition metal-containing metallocene catalyst that maintains stable operation for long periods of time without suffering from adhesion of the produced polymer to the wall of a reactor or formation of a sheet-like polymer or a massive polymer. The process utilizes a transition metal-containing metallocene catalyst and an organoaluminum compound represented by formula: R.sup.1.sub.n Al(OR.sup.2).sub.3-n, wherein R.sup.1 represents a C.sub.1-20 alkyl group, an aryl group, hydrogen or halogen; R.sup.2 represents a C.sub.1-20 alkyl group or an aryl group; and n is a number selected from 0.ltoreq.n<3, under conditions such that the temperature of the wall of a polymerization reactor, Tw (.degree. C.), and the polymerization temperature, Tr (.degree. C.), satisfy the relationship: 0.5
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