C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
252/109, 402/613
C08F 4/64 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01) C08F 210/16 (2006.01)
Patent
CA 1134803
ABSTRACT OF THE DISCLOSURE A catalyst composition formed from selected organoaluminum compounds and a precursor composition of the formula MgmTi1(OR)nXp[ED]q[Filler]r wherein ED is a selected electron donor compound R is a C1 to C14, aliphatic or aromatic hydro- carbon radical, or COR' wherein R' is a C1 to C14 aliphatic or aromatic hydrocarbon radical, X is Cl, Br, I, or mixtures thereof, Filler is an inert organic or inorganic compound and, based on the total weight of such composition m is ?0.5 to ?56 n is 0 or 1 p is ?6 to ?116 q is ?2 to ?85 r has a value such that the percent filler is from about 10 to about 95 weight percent based on the total weight of the precursor composition. A process for preparing such precursor composition by spray drying it from a slurry or solution in said electron donor compound, using atomization. A process for using said catalyst to readily prepare ethylene polymers having a density of about ?0.91 to ? 0.97, a melt flow ratio of ? 22 to ?32 and a bulk density of about 18 to 32 lbs/ft3 and controlled particle shape and ]size in a low pressure gas phase pro- cess at a productivity of ? 50,000 pounds of polymer per pound of Ti.
342244
Hamer Anthony D.
Karol Frederick J.
Hopley William G.
Union Carbide Corporation
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