Copolymer of propylene with a conjugated diene and a process of preparing the same
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United States of America Patent
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Sep 12, 2006
Grant Date -
Jul 14, 2005
app pub date -
Sep 17, 2004
filing date -
Jan 14, 2004
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Abstract
The present invention provides a new copolymer of propylene and a conjugated diene having a carbon-carbon double bond in a side chain, wherein a molar ratio of a total of 1,2-adducts and 3,4-adducts to 1,4-adducts, derived from the conjugated diene, is 100:0. The copolymer is prepared in a process, characterized in that propylene and the conjugated diene are copolymerized in the presence of hydrogen, an organometallic compound comprising a transition metal selected from the group 4 of the periodic table, and at least one Lewis acid.
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