Catalytic system and process for the production of polydiolefins
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United States of America Patent
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Aug 19, 1997
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app pub date -
Aug 17, 1995
filing date -
Feb 11, 1994
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Abstract
A catalytic system to polymerize diolefinic monomers consists of a lanthanide salt, an organometallic compound of a metal belonging to groups I, II and III of the periodic table of elements and an organometallic compound of boron. The polymers obtained are characterized in that they have a high degree of 1,4 chain units and ratio between 1.4-cis/1,4-trans units which can vary as desired, and also a narrow molecular weight distribution.
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