PROCESS FOR THE PREPARATION OF COPOLYMERS OF ETHYLENE WITH ALPHA-OLEFINS
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United States of America Patent
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Sep 10, 2002
Grant Date -
Oct 24, 2002
app pub date -
Dec 17, 1999
filing date -
Apr 21, 1998
priority date (Note) -
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Abstract
Ethylene based copolymers having high molecular weights, narrow molecular weight distributions, and a very good homogeneous distribution of the comonomer units can be obtained in high yields at temperatures of industrial interest, by carrying out the polymerization reaction in the presence of metallocene catalysts comprising particular bridged bis-indenyl compounds substituted in the 3-position on the indenyl groups.
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