C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
252/109, 402/641
C08F 4/64 (2006.01) C08F 10/00 (2006.01)
Patent
CA 1187866
ABSTRACT OF THE DISCLOSURE Compositions exhibiting high catalytic activity in the polymerization of .alpha.-olefins are prepared by reacting a mixture of a tetrahydrocarbyloxy titanium compound such as tetraisopropyl titanate and a hydrocarbyloxy titanium oxide such as di(isopropoxy) titanium oxide, an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an organoaluminum compound such as triethyl aluminum and a halide source such as ethyl aluminum dichloride. Polymerization processes employing this catalyst compo- sition do not require conventional catalyst removal steps in order to provide polymers having suitable color and other physical characteristics and these catalysts provide higher efficiencies than those catalysts employing either of the titanium compounds alone.
420093
Gibbs Ronald L.
Lowery Kirby Jr.
Shipley Randall S.
Smart & Biggar
The Dow Chemical Company
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