Propylene ethylene polymers and production process
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United States of America Patent
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Jun 19, 2007
Grant Date -
Nov 25, 2004
app pub date -
Apr 2, 2002
filing date -
Aug 12, 1997
priority date (Note) -
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Abstract
Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular difference of tacticity. The copolymers are made in the presence of a metallocene catalyst.
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