Catalysts for the polymerization of olefins
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United States of America Patent
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Jun 30, 1992
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N/A
app pub date -
Jan 29, 1990
filing date -
Jan 31, 1989
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Expired
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Abstract
Catalysts for the polymerization of olefins, comprising the product of the reaction between: A) a cyclopentadienyl compound of Ti, Zr or Hf; B) an alumoxane compound of formula: ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, the same or different from each other, are alkyl, alkenyl or alkylaryl radicals having 2 to 20 carbon atoms.
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