Mixed metal alkoxide complexes and polymerization catalysts made therefrom
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United States of America Patent
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Jul 6, 2004
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N/A
app pub date -
May 8, 2002
filing date -
Jun 30, 1999
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Abstract
A process for making a solid composition comprising alkoxide groups, chloride groups, one or more metals, M, in the +2 oxidation state selected from Mg, Ca, Mn, Cu, Co or Zn, and one or more metals, T, in the +3, +4 or +5 oxidation state selected from Ti, Zr, V, Sm, Fe, Ni, Rh, Co, Cr, Mo, W or Hf, the molar ratio M/T of the composition being from 2.5 to 3.75, said process comprising contacting one or more alkoxide containing compounds of metal M, one or more alkoxide compounds of metal T, and a halide compound, the molar ratio M/T of the contacting compounds being from 2.5 to 3.5, and recovering the resulting solid.
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