| abstract |
A solid, particulated, heterogeneous, spray-dried, catalyst composition for the polymerization of addition polymerizable monomers comprising: a) a Group 4 metallocene compound; b) a solid Group 4 metal-magnesium halide complex comprising moieties of at least magnesium, a Group 4 transition metal, and a halide; c) finely divided, inert filler, and d) an optional binder capable of joining components a) and b) and optionally c) into a particulated, heterogeneous, agglomerate without adversely affecting the catalytic properties thereof, and a method for the manufacture thereof comprising forming a mixture of the above composition in a liquid diluent and spray-drying the same to remove diluent. |