US 6,982,237 B2
Spray-dried polymerization catalyst and polymerization processes employing same
Burkhard Eric Wagner, Highland Park, N.J. (US); and Robert James Jorgensen, Scott Depot, W. Va. (US)
Assigned to Univation Technologies, LLC, Houston, Tex. (US)
Filed on Jul. 15, 2002, as Appl. No. 10/196,705.
Prior Publication US 2004/0010101 A1, Jan. 15, 2004
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 31/00 (2006.01); B01J 37/00 (2006.01); C08F 4/02 (2006.01); C08F 4/60 (2006.01); C08F 4/44 (2006.01)
U.S. Cl. 502—125 26 Claims
OG exemplary drawing
 
1. A catalyst precursor composition comprising:
a) a mixture or reaction product of
i) a magnesium halide;
ii) a solvent;
iii) an electron donor compound, wherein the electron donor is an alcohol; and
iv) a transition metal compound wherein the transition metal is selected from Groups 3–10 and Lanthanides; and
b) an inert filler;
wherein said a) and b) form the catalyst precursor and wherein said catalyst precursor is spray dried, wherein the catalyst precursor composition is substantially free of other electron donor compounds, the molar ratio of the electron donor compound to magnesium is less than or equal to 1.9 and the catalyst precursor composition comprises particles having an average particle size of greater than about 10 μm, wherein said magnesium halide has a solubility in said solvent in the range of from 0.75–2.0 moles/liter.